CA1296637C - Pharmaceutical composition for the treatment of gastrointestinal disorders - Google Patents
Pharmaceutical composition for the treatment of gastrointestinal disordersInfo
- Publication number
- CA1296637C CA1296637C CA000552962A CA552962A CA1296637C CA 1296637 C CA1296637 C CA 1296637C CA 000552962 A CA000552962 A CA 000552962A CA 552962 A CA552962 A CA 552962A CA 1296637 C CA1296637 C CA 1296637C
- Authority
- CA
- Canada
- Prior art keywords
- methyl
- pharmaceutical composition
- tetrahydro
- ranitidine
- imidazol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/415—1,2-Diazoles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/08—Drugs for disorders of the alimentary tract or the digestive system for nausea, cinetosis or vertigo; Antiemetics
Abstract
ABSTRACT
PHARMACEUTICAL COMPOSITIONS
A pharmaceutical composition for use in the treatment of gastrointestinal disorders comprising 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one or a physiologically acceptable salt or solvate thereof and ranitidine or a physiologically acceptable salt thereof.
PHARMACEUTICAL COMPOSITIONS
A pharmaceutical composition for use in the treatment of gastrointestinal disorders comprising 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one or a physiologically acceptable salt or solvate thereof and ranitidine or a physiologically acceptable salt thereof.
Description
~3~
PHARMACEUTICAL COMPOSITIONS
This invention relates to improvements in the formulation of ~rugs for the treatment of gastrointestinal disorders. More particularly it relates to pharrnaceutical compositions comprising a compound having antagonist activity at 5HT3 receptors and ranitidine.
In our UK Patent Specification No. 2153821A we disclose inter alia 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl) methyl]-4H-carbazol-4-one which may be represented by the formula (I) .. Il ,.
o / V~
\\/ \ / \ / I
0 1 ~9 Me Me and physiologically acceptaole salts, solvates and physiologically accepta~le equivalents thereof.
In the aforementioned specification the compounds are described as potent and selective antagonists of 5-hydroxytryptamine (5HT) at 'neuronal' 5HT receptors of the type located on terminals of primary afferent nerves, and which are also present in the central nervous system. Receptors of this type are now designated 5HT3 receptors.
The cornpounds are described as beinq of use in the treatment of a human or anirnal subject sufferin~ from a condition caused by a disturbance of neuronal 5HT functionJ for example in the treatment of miqraine pain or a psychotic disorder such as schizophrenia. The compounds may also be useful in the treatment of conditions such as anxiety, o~esity and mania.
'We' ha've found that the compound of formula (I) additionally promotes gastric emptyinq and is thus useful in the treatment of conditions which may be relieved by the promotion of sastric emptyina.
Such con~itions include gastric stasis and symptoms 0~ !
gastrointestinal dysfunction such as dyspepsia, reflux oesophagitis9 peptic ulcer and flatulence.
~ ~3~
The compound of formula (I) has also ~een found to ~e an anti-emetic, and may be used in the treatment and prevention of nausea and vomitinq. The use of the compound of formula (I) for the treatment oF emesis is described in published European Patent Specification No. 201165, which specification also refers to the use of the compound of formula (I) for the treatment of irritable bowel syndrome.
Ranitidine is the approved name for N-[2-[[[5-(dimethylamino)-methyl]-2-furanyl]methyl]thio]ethyl-N'-methyl-2-nitro-l,l-I0 ethenediamine which is described and claimed in British Patent Specification No. 1565966. It is a potent histamine H2-antaqonist which, in the form of its hydrochloride, is widely used in the treatment of conditions where there is an advantaae in loweriny gastric acidity. Such conditions include duodenal and aastric ulceration, reflux oesophaqitis and Zollinger-Ellison syndrome.
Ranitidine may also be used prophylactically in surgical procedures, and in the treatment of allergic and inflammatory conditions where histamine is a known mediator.
The combination of the 5HT3 receptor antagonist of formula (I) with the H2 receptor antagonist ranitidine provides a useful and advantageous pharmaceutical preparation for the treatrnent of gastrointestinal disorders. A combined preparation of this type is particularly useful for the treatment of conditions such as reflux oesophagitis where the promotion of qastric emptying serves to alleviate the reflux, thereby encouraging the healing effect of the H2-receptor antagonist. Such a composition may also be useful in general anaesthesia. More particularly, when the combined preparation is given before or durincl anaesthesia, the promotion of gastric emptyin~ ~y the 5HT3 antagonist and the reduction of qastric acid producFior~ by ranitidine prevents both acid inhalation durinq anaesthesia and post-anaesthetic nausea and vomitinq. The combined preparation may also be useful for the treatment of irritable bowel syndrome.
The present invention thus provides a pharmaceutical composition, for use in human or veterinary medicine, comprisinq the compound of formula (I) or a physiologically acceptable saLt or solvate thereof, and ranitidine or a physiologically acceptable salt thereof.
Suitable physioloqically acceptable salts of the carbazolone of formula (I) for incorporation in the composition according to the invention include acid addition salts ~ormed with orqanic or inorganic acids for example, hydrochlorides, hydrobromides, sulphates, phosphates, citrates, fumarates and maLeates. The solvates may, for example, be hydrates. A preferred form of the compound of formula (I) is the hydrochloride, particularly in hydrated form, e.g. the dihydrate.
Compositions containing the compound of formula (I) in the form of a physioloqically acceptable equivalent, i.e. a physiologically acceptable compound which are converted in vivo into the parent compound of formula (I), are also included within the scope of the invention.
It is preferred that ranitidine should be employed in the composition according to the invention in the form a physiologically acceptable salt. Such salts include salts of inorqanic or orqanic acids such as the hydrochloride, hydrobromide, sulphate, acetate, maleate, succinate and fumarate salts. The hydrochloride salt is particularly preferred.
A proposed dosage of the compound of formula (I) for incorporation in the pharmaceutical composition of the invention for administration to man (of approximately 7ûkq body weiqht), is 0.05 to 25mg, more prefsrably O.û5 to 20mg, and rnost preferably ~.1 to 10mg per unit dose, expressed as the weight of free base.
The amount of ranltidine, preferably in the form a physioloqically acceptable salt, employed in the pharmaceutical composition of the invention will preferably be in the ranqe of 50-3ûOmq per dosage unit, expressed as the weiqht of free base.
The composition accordinq to the invention may be administered, for example, l to 4 times per day. The exact dose will depend on the route of administration and the condition beinq treated, and it will be appreciated that it may be necessary to make routine variations to the dosage dependinq on the age and weiqht o~ the patient as well as the severity of the condition to be treated.
rhe pharmaceutical compositions of the invention may ~e formulated in conventional manner usiny one or more pnysioloqically acceptable carriers or excipients.
Thus the compositions of the invention may, for example, De formulated for oral, buccal, parenteral or rectal administration.
Particularly useful pharmaceutical cornpositions according to the invention are those in a form suitable for oral or rectal administration.
For oral administration, the pharmaceutical compositions may ta~e the form of, for example, tablets or capsules prepared by conventional 0 means with pharmaceutically acceptable excipients such as bindinq agents (e.g. pregelatinised maize starch, polyvinylpyrrolidone or hydroxypropyl methylcellulose); fillers (e.q. lactose, microcrystalline cellulose or calcium hydroqen phosphate); lubricants (e.g. magnesium stearate, talc or silica); disinteqrants (e.g. potato starch or sodium starch glycollate); or wetting aqents (e.g. sodium lauryl sulphate). The tablets may be coated by methods well known in the art. Liquid preparations for oral administration may take the form of, for example, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle Defore use. Such liquid preparations may be prepared by conventional means with pharmaceutically acceptaDle additives such as suspending agents (e.g. sorbitol syrup, cellulose derivatives or hydrogenated edible fats) 7 emulsifying agents (e.q. lecithin or acacia); non-aqueous vehicles (e.~ almond oil, oily esters, ethyl alcohol or fractionated vegetable oils); and preservatives (e.q.
methyl or propyl-p-hydroxybenzoates or sorbic aci~). The preparations may also contain buffer salts, flavourinq, colourinq and sweeteninq aqents as appropriate.
Pr~eparations for oral administration may be suitably formulated to ~ive controlled release of one or both active inqredients.
For buccal administration the compositions may take the form of tablets or lozenges formulated in conventional manner.
For parenteral administration the compositions may be presented in a foEm sùitable for ~olus injection or continuous infusion.
Formulations for injection may be presented in unit ~osage form e.q.
~ t7 in ampoules or in multi-dose containers, with an added preservative.
The compositions may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising and/or dispersing aqents.
Alternatively, the active ingredients may De in powder form for constitution with a suitable vehicle, e~g. sterile pyrogen-free water, Defore use.
For rectal administration the compositions may be formulated as suppositories or retention enemas, e.g. containing conventional suppository bases such as cocoa butter or other glycerides.
In addition to the formulations described previously, the compositions accordincl to the invention may also take the form of depot preparations. Such lonq acting formulations may be administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection. Thus, for example, the active ingredients may be formulated with suitable polymeric or hydrophobic materials (for example as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparinqly soluble salt.
The compositions may, if desired, ~e presented in a pack or dispenser device which may contain one or more unit dosage Forms containing the active ingredients. The pack may For example comprise metal or plastic foil, such as a blister pack. The pack or dispenser device may be accomoanied by instructions for administration.
The pharmaceutical cornpositions of the invention may be prepared accordinq to conventional techniqur-3s well known in the pharmaceutical industry. Thus, for example, the compound of form~la (I) or a salt or solvate thereof and the ranitidine or ranitidine salt may be admixecl together, if desired, with suitable excipients. lablets may be prepared, for example, by direct compression of such a mixture.
Capsules may be prepared by filling the blend alona with suitable excipients into ge~atin capsules, usinq a suitable fillina machine.
Controlled release forms for oral or rectal administration may be formulated in a conventional manner associated with controlled release forms.
~ ~3~
The followinq examples illustrate the preparation of a cornpound of formula (I). Temperatures are in C.
Exam 1,2~3~9-Tetrahydro-9-methyl-3-[(2-methyl~1H-imidazol-1-yl)methyl]-4H
carDazol-4-one A solution of 3-[(dimethylamino)methyl]-l,2,3,9-tetrahydro-9-methyl -4H-car~azol-4-one hydrochloride (1.79) in water l17ml) was treated with 2-methylimidazole (1.49) and then heated under reflux for 20h.
The cooled mixture was filtered and the residue washed with water (3x15ml) to give a product (1.7q) m.p. 221-221.5. This material was - recrystallised from methanol to qive the title compound (1.4q) m.p.
231-232.
Example 2 5 1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-lH-imidazol-l-yl)methyl~-4H-car~azol-4-one hvdrochloride dihYdrate 1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-lH-imidazol-l-yl)methyl]-4H-carbazol-4-one (18.39) in a hot mixture of isopropanol (9Oml) and water (18.3ml) was treated with concentrated hydrochloric acid (6.25ml). The hot mixture was filtered and the filtrate diluted with isopropanol (90ml) and stirred at room temperature for 17h, cooled to 2 and the solid filtered off (21.69). A sample (69) was recrystallized from a mlxture of water (6ml) and isopropanol (1Oml) to give the tit.Le compound as a white crystalline solid (69) m.p.
178.5-179.5.
Analysis Found: C,59.45;H,6.45;N,11.5.
ClaHlgN30.HCl.2H20 requires C~59.1;H~6.6;N~11.5~o.
Water assay Found: 10.23~o 3~ Cl8HlgN30.HCl.2H20 requires 9. 85~o The following example illustrates a pharmaceutical composition accordinq to the invention, containinq 1,2,3,9-tetrahydro-9-methyl-3-t~2-methyl-lH-imidazol-l-yl)methyl]-4H-carbazol-4-one hydrochloride dihydrate ~Compound A) and ranitidine hydrochloride as the active ingredients. Other physioloqically acceptable salts and/or solvates of '7 the compound of formula (I), and ranitidine and/or physialoqically acceptable salts thereof, may be formulated in a similar rnanner, TABLETS FOR ORAL ADMINISTRATION
Tablets may be prepared by the normal methods such as direct compression or wet qranulation.
The taDlets may be film coated with suitable film forminq materials, such as hydroxypropyl methylcellulose, using standard techniques.
Direct Compression Taolet mg/tablet Compound A 5.00*
Ranitidine hydrochloride 168.00**
Microcrystalline cellulose NF 100.0û
Anhydrous lactose NF 75.25 Maqnesium stearate BP 1.75 Compression weiqht 350.00 * Equivalent to 4.00mq free base ** Eauivalent to 150.0rnq free base Compound A and the ranitidine hydrochloride are blended with the excipients. The resultant mix is compressed into tablets usinq a suitable tablet press Fitted with 9.5mm normal concave punches.
, Wet Granulation Tablet Compound A 10.0 ~
Ranitidine hydrochloride 112.0 **
Lactose BP 130.0 Starch BP 30.0 Pregelatinised Maize Starch BP 15.0 Maqnesium Stearate BP 3.0 Compression Weight 300.0 .
~l~'t3~ 7 . ~
* Equivalent to a.Omg free base.
** Equivalent to 100.0nng free base The active ingredients are sieved through a suitable sieve ancl blended with lactose, starch and pregelatinised maize starch.
Suitable volumes of purified water are added and the powders are granulated. After dryinq, the granules are screened and blended with the magnesiunn stearate. The granulss are then compressed into tablets using 9.5mm diameter punches.
Tablets of other strengths and/or combination of doses may be prepared ~y appropriate alterations in the amounts of the active inqredients and the excipients and using punches to suit.
CAPSULES
ma~capsule Compound A 10.0 Ranitidine hydrochloride 112.0 Microcrystalline Cellulose NF 76.0 Magnesium Stearate PP 2.0 Fill Weight 200.0 The active ingredients are sieved and blended with the exclpients. The mix iæ fillsd into size No. 1 hard gelatin capsules using suitable machinery. Other doses may be prepared by altering the fill weight and if necessary chanain~ the capsule size to suit.
SY
This may be either a sucrose or sucrose free presentation.
A. Sucrose Syrup mq/SmR dose Compound A 5.0 Ranitidine hydrochloride 56.0 Sucrose BP 2750.0 Glycerine BP 50n.0 Bu~fer Flavour ) as required Colour Preservative ) Purified Water BP to 5.0m~
The active inqredients, bufi~er, flavour, colour and preservative are dissolved in some of the water and the glycerine is added. The remainder of the water is heated to dissolve the sucrose and is then cooled. The two solutions are combined, adjusted to volume and mixed.
The syrup is clarified by filtration.
B. Sucrose~Free ma/5m~ dose Compound A 5.0 Ranitidine hydrochloride 56.0 Hydroxypropylmethylcellulose USP
(viscosity type-4ûOO) 22.5 8uffer Flavour Colour ) As required Preservative ) S~eetener Purified Water BP to 5.0mQ
The hydroxypropylmethylcellulose is dispersed in hot water, cooled and then mixed with an aqueous solution containinq the active inqredients and the other components of the formulation. The resultant solution is adjusted to volume and mixed. The syrup is clarified by Filtration.
SUPPOSI lO~Y
Compound A 10.0mq Ranitidine hydrochloride 112.Omq *~Witepsol H1S to 1.0q * A proprietory qrade of Adeps Solidus Ph. Eur.
A suspension of the active ingredients in molten Witepsol is i prepared and filled into appropriate suppository moulds usinq suitable machinery.
PHARMACEUTICAL COMPOSITIONS
This invention relates to improvements in the formulation of ~rugs for the treatment of gastrointestinal disorders. More particularly it relates to pharrnaceutical compositions comprising a compound having antagonist activity at 5HT3 receptors and ranitidine.
In our UK Patent Specification No. 2153821A we disclose inter alia 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl) methyl]-4H-carbazol-4-one which may be represented by the formula (I) .. Il ,.
o / V~
\\/ \ / \ / I
0 1 ~9 Me Me and physiologically acceptaole salts, solvates and physiologically accepta~le equivalents thereof.
In the aforementioned specification the compounds are described as potent and selective antagonists of 5-hydroxytryptamine (5HT) at 'neuronal' 5HT receptors of the type located on terminals of primary afferent nerves, and which are also present in the central nervous system. Receptors of this type are now designated 5HT3 receptors.
The cornpounds are described as beinq of use in the treatment of a human or anirnal subject sufferin~ from a condition caused by a disturbance of neuronal 5HT functionJ for example in the treatment of miqraine pain or a psychotic disorder such as schizophrenia. The compounds may also be useful in the treatment of conditions such as anxiety, o~esity and mania.
'We' ha've found that the compound of formula (I) additionally promotes gastric emptyinq and is thus useful in the treatment of conditions which may be relieved by the promotion of sastric emptyina.
Such con~itions include gastric stasis and symptoms 0~ !
gastrointestinal dysfunction such as dyspepsia, reflux oesophagitis9 peptic ulcer and flatulence.
~ ~3~
The compound of formula (I) has also ~een found to ~e an anti-emetic, and may be used in the treatment and prevention of nausea and vomitinq. The use of the compound of formula (I) for the treatment oF emesis is described in published European Patent Specification No. 201165, which specification also refers to the use of the compound of formula (I) for the treatment of irritable bowel syndrome.
Ranitidine is the approved name for N-[2-[[[5-(dimethylamino)-methyl]-2-furanyl]methyl]thio]ethyl-N'-methyl-2-nitro-l,l-I0 ethenediamine which is described and claimed in British Patent Specification No. 1565966. It is a potent histamine H2-antaqonist which, in the form of its hydrochloride, is widely used in the treatment of conditions where there is an advantaae in loweriny gastric acidity. Such conditions include duodenal and aastric ulceration, reflux oesophaqitis and Zollinger-Ellison syndrome.
Ranitidine may also be used prophylactically in surgical procedures, and in the treatment of allergic and inflammatory conditions where histamine is a known mediator.
The combination of the 5HT3 receptor antagonist of formula (I) with the H2 receptor antagonist ranitidine provides a useful and advantageous pharmaceutical preparation for the treatrnent of gastrointestinal disorders. A combined preparation of this type is particularly useful for the treatment of conditions such as reflux oesophagitis where the promotion of qastric emptying serves to alleviate the reflux, thereby encouraging the healing effect of the H2-receptor antagonist. Such a composition may also be useful in general anaesthesia. More particularly, when the combined preparation is given before or durincl anaesthesia, the promotion of gastric emptyin~ ~y the 5HT3 antagonist and the reduction of qastric acid producFior~ by ranitidine prevents both acid inhalation durinq anaesthesia and post-anaesthetic nausea and vomitinq. The combined preparation may also be useful for the treatment of irritable bowel syndrome.
The present invention thus provides a pharmaceutical composition, for use in human or veterinary medicine, comprisinq the compound of formula (I) or a physiologically acceptable saLt or solvate thereof, and ranitidine or a physiologically acceptable salt thereof.
Suitable physioloqically acceptable salts of the carbazolone of formula (I) for incorporation in the composition according to the invention include acid addition salts ~ormed with orqanic or inorganic acids for example, hydrochlorides, hydrobromides, sulphates, phosphates, citrates, fumarates and maLeates. The solvates may, for example, be hydrates. A preferred form of the compound of formula (I) is the hydrochloride, particularly in hydrated form, e.g. the dihydrate.
Compositions containing the compound of formula (I) in the form of a physioloqically acceptable equivalent, i.e. a physiologically acceptable compound which are converted in vivo into the parent compound of formula (I), are also included within the scope of the invention.
It is preferred that ranitidine should be employed in the composition according to the invention in the form a physiologically acceptable salt. Such salts include salts of inorqanic or orqanic acids such as the hydrochloride, hydrobromide, sulphate, acetate, maleate, succinate and fumarate salts. The hydrochloride salt is particularly preferred.
A proposed dosage of the compound of formula (I) for incorporation in the pharmaceutical composition of the invention for administration to man (of approximately 7ûkq body weiqht), is 0.05 to 25mg, more prefsrably O.û5 to 20mg, and rnost preferably ~.1 to 10mg per unit dose, expressed as the weight of free base.
The amount of ranltidine, preferably in the form a physioloqically acceptable salt, employed in the pharmaceutical composition of the invention will preferably be in the ranqe of 50-3ûOmq per dosage unit, expressed as the weiqht of free base.
The composition accordinq to the invention may be administered, for example, l to 4 times per day. The exact dose will depend on the route of administration and the condition beinq treated, and it will be appreciated that it may be necessary to make routine variations to the dosage dependinq on the age and weiqht o~ the patient as well as the severity of the condition to be treated.
rhe pharmaceutical compositions of the invention may ~e formulated in conventional manner usiny one or more pnysioloqically acceptable carriers or excipients.
Thus the compositions of the invention may, for example, De formulated for oral, buccal, parenteral or rectal administration.
Particularly useful pharmaceutical cornpositions according to the invention are those in a form suitable for oral or rectal administration.
For oral administration, the pharmaceutical compositions may ta~e the form of, for example, tablets or capsules prepared by conventional 0 means with pharmaceutically acceptable excipients such as bindinq agents (e.g. pregelatinised maize starch, polyvinylpyrrolidone or hydroxypropyl methylcellulose); fillers (e.q. lactose, microcrystalline cellulose or calcium hydroqen phosphate); lubricants (e.g. magnesium stearate, talc or silica); disinteqrants (e.g. potato starch or sodium starch glycollate); or wetting aqents (e.g. sodium lauryl sulphate). The tablets may be coated by methods well known in the art. Liquid preparations for oral administration may take the form of, for example, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle Defore use. Such liquid preparations may be prepared by conventional means with pharmaceutically acceptaDle additives such as suspending agents (e.g. sorbitol syrup, cellulose derivatives or hydrogenated edible fats) 7 emulsifying agents (e.q. lecithin or acacia); non-aqueous vehicles (e.~ almond oil, oily esters, ethyl alcohol or fractionated vegetable oils); and preservatives (e.q.
methyl or propyl-p-hydroxybenzoates or sorbic aci~). The preparations may also contain buffer salts, flavourinq, colourinq and sweeteninq aqents as appropriate.
Pr~eparations for oral administration may be suitably formulated to ~ive controlled release of one or both active inqredients.
For buccal administration the compositions may take the form of tablets or lozenges formulated in conventional manner.
For parenteral administration the compositions may be presented in a foEm sùitable for ~olus injection or continuous infusion.
Formulations for injection may be presented in unit ~osage form e.q.
~ t7 in ampoules or in multi-dose containers, with an added preservative.
The compositions may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilising and/or dispersing aqents.
Alternatively, the active ingredients may De in powder form for constitution with a suitable vehicle, e~g. sterile pyrogen-free water, Defore use.
For rectal administration the compositions may be formulated as suppositories or retention enemas, e.g. containing conventional suppository bases such as cocoa butter or other glycerides.
In addition to the formulations described previously, the compositions accordincl to the invention may also take the form of depot preparations. Such lonq acting formulations may be administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection. Thus, for example, the active ingredients may be formulated with suitable polymeric or hydrophobic materials (for example as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparinqly soluble salt.
The compositions may, if desired, ~e presented in a pack or dispenser device which may contain one or more unit dosage Forms containing the active ingredients. The pack may For example comprise metal or plastic foil, such as a blister pack. The pack or dispenser device may be accomoanied by instructions for administration.
The pharmaceutical cornpositions of the invention may be prepared accordinq to conventional techniqur-3s well known in the pharmaceutical industry. Thus, for example, the compound of form~la (I) or a salt or solvate thereof and the ranitidine or ranitidine salt may be admixecl together, if desired, with suitable excipients. lablets may be prepared, for example, by direct compression of such a mixture.
Capsules may be prepared by filling the blend alona with suitable excipients into ge~atin capsules, usinq a suitable fillina machine.
Controlled release forms for oral or rectal administration may be formulated in a conventional manner associated with controlled release forms.
~ ~3~
The followinq examples illustrate the preparation of a cornpound of formula (I). Temperatures are in C.
Exam 1,2~3~9-Tetrahydro-9-methyl-3-[(2-methyl~1H-imidazol-1-yl)methyl]-4H
carDazol-4-one A solution of 3-[(dimethylamino)methyl]-l,2,3,9-tetrahydro-9-methyl -4H-car~azol-4-one hydrochloride (1.79) in water l17ml) was treated with 2-methylimidazole (1.49) and then heated under reflux for 20h.
The cooled mixture was filtered and the residue washed with water (3x15ml) to give a product (1.7q) m.p. 221-221.5. This material was - recrystallised from methanol to qive the title compound (1.4q) m.p.
231-232.
Example 2 5 1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-lH-imidazol-l-yl)methyl~-4H-car~azol-4-one hvdrochloride dihYdrate 1,2,3,9-Tetrahydro-9-methyl-3-[(2-methyl-lH-imidazol-l-yl)methyl]-4H-carbazol-4-one (18.39) in a hot mixture of isopropanol (9Oml) and water (18.3ml) was treated with concentrated hydrochloric acid (6.25ml). The hot mixture was filtered and the filtrate diluted with isopropanol (90ml) and stirred at room temperature for 17h, cooled to 2 and the solid filtered off (21.69). A sample (69) was recrystallized from a mlxture of water (6ml) and isopropanol (1Oml) to give the tit.Le compound as a white crystalline solid (69) m.p.
178.5-179.5.
Analysis Found: C,59.45;H,6.45;N,11.5.
ClaHlgN30.HCl.2H20 requires C~59.1;H~6.6;N~11.5~o.
Water assay Found: 10.23~o 3~ Cl8HlgN30.HCl.2H20 requires 9. 85~o The following example illustrates a pharmaceutical composition accordinq to the invention, containinq 1,2,3,9-tetrahydro-9-methyl-3-t~2-methyl-lH-imidazol-l-yl)methyl]-4H-carbazol-4-one hydrochloride dihydrate ~Compound A) and ranitidine hydrochloride as the active ingredients. Other physioloqically acceptable salts and/or solvates of '7 the compound of formula (I), and ranitidine and/or physialoqically acceptable salts thereof, may be formulated in a similar rnanner, TABLETS FOR ORAL ADMINISTRATION
Tablets may be prepared by the normal methods such as direct compression or wet qranulation.
The taDlets may be film coated with suitable film forminq materials, such as hydroxypropyl methylcellulose, using standard techniques.
Direct Compression Taolet mg/tablet Compound A 5.00*
Ranitidine hydrochloride 168.00**
Microcrystalline cellulose NF 100.0û
Anhydrous lactose NF 75.25 Maqnesium stearate BP 1.75 Compression weiqht 350.00 * Equivalent to 4.00mq free base ** Eauivalent to 150.0rnq free base Compound A and the ranitidine hydrochloride are blended with the excipients. The resultant mix is compressed into tablets usinq a suitable tablet press Fitted with 9.5mm normal concave punches.
, Wet Granulation Tablet Compound A 10.0 ~
Ranitidine hydrochloride 112.0 **
Lactose BP 130.0 Starch BP 30.0 Pregelatinised Maize Starch BP 15.0 Maqnesium Stearate BP 3.0 Compression Weight 300.0 .
~l~'t3~ 7 . ~
* Equivalent to a.Omg free base.
** Equivalent to 100.0nng free base The active ingredients are sieved through a suitable sieve ancl blended with lactose, starch and pregelatinised maize starch.
Suitable volumes of purified water are added and the powders are granulated. After dryinq, the granules are screened and blended with the magnesiunn stearate. The granulss are then compressed into tablets using 9.5mm diameter punches.
Tablets of other strengths and/or combination of doses may be prepared ~y appropriate alterations in the amounts of the active inqredients and the excipients and using punches to suit.
CAPSULES
ma~capsule Compound A 10.0 Ranitidine hydrochloride 112.0 Microcrystalline Cellulose NF 76.0 Magnesium Stearate PP 2.0 Fill Weight 200.0 The active ingredients are sieved and blended with the exclpients. The mix iæ fillsd into size No. 1 hard gelatin capsules using suitable machinery. Other doses may be prepared by altering the fill weight and if necessary chanain~ the capsule size to suit.
SY
This may be either a sucrose or sucrose free presentation.
A. Sucrose Syrup mq/SmR dose Compound A 5.0 Ranitidine hydrochloride 56.0 Sucrose BP 2750.0 Glycerine BP 50n.0 Bu~fer Flavour ) as required Colour Preservative ) Purified Water BP to 5.0m~
The active inqredients, bufi~er, flavour, colour and preservative are dissolved in some of the water and the glycerine is added. The remainder of the water is heated to dissolve the sucrose and is then cooled. The two solutions are combined, adjusted to volume and mixed.
The syrup is clarified by filtration.
B. Sucrose~Free ma/5m~ dose Compound A 5.0 Ranitidine hydrochloride 56.0 Hydroxypropylmethylcellulose USP
(viscosity type-4ûOO) 22.5 8uffer Flavour Colour ) As required Preservative ) S~eetener Purified Water BP to 5.0mQ
The hydroxypropylmethylcellulose is dispersed in hot water, cooled and then mixed with an aqueous solution containinq the active inqredients and the other components of the formulation. The resultant solution is adjusted to volume and mixed. The syrup is clarified by Filtration.
SUPPOSI lO~Y
Compound A 10.0mq Ranitidine hydrochloride 112.Omq *~Witepsol H1S to 1.0q * A proprietory qrade of Adeps Solidus Ph. Eur.
A suspension of the active ingredients in molten Witepsol is i prepared and filled into appropriate suppository moulds usinq suitable machinery.
Claims (12)
1. A pharmaceutical composition for use in human or veterinary medicine comprising 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one or a physiologically acceptable salt or solvate thereof and ranitidine or a physiologically acceptable salt thereof.
2. A pharmaceutical composition as claimed in claim 1 wherein the 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one is used in the form of a hydrocholoride salt.
3. A pharmaceutical composition as claimed in claim 2 wherein the 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one is used in the form of the hydrochloride dihydrate.
4. A pharmaceutical composition as claimed in claim 1 or 2 or 3 wherein the ranitidine is used in the form of the hydrochloride salt.
5. A pharmaceutical composition as claimed in claim 1 or 2 or 3 in unit dose form containing 0.05 to 25mg per unit dose of 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one and 50 to 300mg per unit dose of ranitidine, both dosages being expressed as the weight of free base.
6. A pharmaceutical composition as claimed in claim 5 in which the unit dose of 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one is 0.05 to 20mg.
7. A pharmaceutical composition as claimed in any of claims 1 or 2 or 3 in a form adapted for oral, buccal, parenteral or rectal administration.
8. A pharmaceutical composition as claimed in claim 7 for oral administration in the form of tablets.
9. A pharmaceutical composition as claimed in any of claims 1 or 2 or 3 containing at least one physiologically acceptable carrier or excipient.
10. A method for the manufacture of a pharmaceutical composition as claimed in any of claims 1 or 2 or 3 which comprises processing the components by conventional techniques to form a pharmaceutical composition.
11. The use of 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one or a physiologically acceptable salt or solvate thereof in a unit dose of 0.05 to 20mg, together with ranitidine or a physiologically acceptable salt thereof in a unit dose of 50 to 300mg, both doses being expressed as the weight of free base, for the manufacture of a medicament for the promotion of gastric emptying.
12. The use of 1, 2, 3, 9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]-4H-carbazol-4-one or a physiologically acceptable salt or solvate thereof in a unit dose of 0.05 to 20mg, together with ranitidine or a physiologically acceptable salt thereof in a unit dose of 50 to 300mg, both doses being expressed as the weight of free base, for the manufacture of a medicament for the treatment and prevention of nausea and vomiting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858516083A GB8516083D0 (en) | 1985-06-25 | 1985-06-25 | Heterocyclic compounds |
| GB868628474A GB8628474D0 (en) | 1985-06-25 | 1986-11-28 | Pharmaceutical compositions |
| GB8628474 | 1986-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1296637C true CA1296637C (en) | 1992-03-03 |
Family
ID=40347948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000552962A Expired - Fee Related CA1296637C (en) | 1985-06-25 | 1987-11-27 | Pharmaceutical composition for the treatment of gastrointestinal disorders |
Country Status (22)
| Country | Link |
|---|---|
| US (2) | US4753789A (en) |
| EP (2) | EP0431443A3 (en) |
| JP (2) | JPS6253920A (en) |
| AT (2) | ATE134510T1 (en) |
| AU (2) | AU609028B2 (en) |
| BE (1) | BE1002249A4 (en) |
| CA (1) | CA1296637C (en) |
| CH (1) | CH672068A5 (en) |
| CY (1) | CY2000A (en) |
| DE (2) | DE3650488T2 (en) |
| DK (1) | DK624687A (en) |
| FR (1) | FR2613934B1 (en) |
| GB (3) | GB8516083D0 (en) |
| HK (1) | HK82597A (en) |
| IE (1) | IE60908B1 (en) |
| IL (1) | IL84638A (en) |
| IT (1) | IT1211937B (en) |
| NL (1) | NL8702853A (en) |
| NZ (1) | NZ222743A (en) |
| SE (1) | SE8704747L (en) |
| SG (1) | SG43311A1 (en) |
| ZA (1) | ZA878927B (en) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0405617A3 (en) * | 1985-03-14 | 1992-11-25 | Beecham Group P.L.C. | Medicaments for the treatment of anxiety |
| US5578628A (en) * | 1985-06-25 | 1996-11-26 | Glaxo Group Limited | Medicaments for the treatment of nausea and vomiting |
| GB8516083D0 (en) * | 1985-06-25 | 1985-07-31 | Glaxo Group Ltd | Heterocyclic compounds |
| GB8627909D0 (en) * | 1986-11-21 | 1986-12-31 | Glaxo Group Ltd | Medicaments |
| GB8630079D0 (en) * | 1986-12-17 | 1987-01-28 | Glaxo Group Ltd | Medicaments |
| IL84845A0 (en) * | 1986-12-17 | 1988-06-30 | Glaxo Group Ltd | Pharmaceutical compositions comprising a certain carbazolone derivative or a salt thereof |
| US5330982A (en) * | 1986-12-17 | 1994-07-19 | Glaxo Group Limited | Pharmaceutical composition containing a 5-HT receptor antagonist and an H+ K+ Atpase inhibitor and a method of treating gastrointestingal disorders therewith |
| GB8630071D0 (en) * | 1986-12-17 | 1987-01-28 | Glaxo Group Ltd | Medicaments |
| GB8630080D0 (en) * | 1986-12-17 | 1987-01-28 | Glaxo Group Ltd | Medicaments |
| JPH0754759B2 (en) * | 1987-04-27 | 1995-06-07 | 日本電信電話株式会社 | Plasma processing method and apparatus, and mode converter for plasma processing apparatus |
| US4943428A (en) * | 1987-07-10 | 1990-07-24 | Wright State University | Stimulation of serotonin-1A receptors in mammals to alleviate motion sickness and emesis induced by chemical agents |
| DE3822792C2 (en) * | 1987-07-11 | 1997-11-27 | Sandoz Ag | New use of 5HT¶3¶ antagonists |
| GB8805269D0 (en) * | 1988-03-04 | 1988-04-07 | Glaxo Group Ltd | Medicaments |
| GB8806224D0 (en) * | 1988-03-16 | 1988-04-13 | Johnson Matthey Plc | Platinum chemotherapeutic product |
| GB8816187D0 (en) * | 1988-07-07 | 1988-08-10 | Glaxo Group Ltd | Medicaments |
| US5047246A (en) * | 1988-09-09 | 1991-09-10 | Bristol-Myers Company | Direct compression cyclophosphamide tablet |
| AU627221B2 (en) * | 1988-09-27 | 1992-08-20 | Fujisawa Pharmaceutical Co., Ltd. | Pyridoindole derivatives and processes for preparation thereof |
| GB8904182D0 (en) * | 1989-02-23 | 1989-04-05 | Glaxo Canada | Pharmaceutical compositions |
| US5039528A (en) * | 1989-12-11 | 1991-08-13 | Olney John W | EAA antagonists as anti-emetic drugs |
| US4971651A (en) * | 1990-02-05 | 1990-11-20 | Hitachi, Ltd. | Microwave plasma processing method and apparatus |
| CA2112488A1 (en) * | 1991-06-26 | 1993-01-07 | James W. Young | Method and compositions for treating emesis, nausea and other disorders using optically pure s(-) ondansetron |
| AU2295792A (en) * | 1991-06-26 | 1993-01-25 | Sepracor, Inc. | Method and compositions for treating emesis, nausea and other disorders using optically pure r(+) ondansetron |
| EP1082959A1 (en) * | 1991-09-20 | 2001-03-14 | Glaxo Group Limited | NK1 Antagonists for the treatment of depression |
| KR960700711A (en) * | 1993-03-08 | 1996-02-24 | 후지야마 아키라 | Medicine for treating or preventing cerebrovascular diseases |
| GB9423511D0 (en) * | 1994-11-22 | 1995-01-11 | Glaxo Wellcome Inc | Compositions |
| AU779696B2 (en) * | 1999-03-01 | 2005-02-10 | Sepracor, Inc. | Methods for treating apnea and apnea disorders using optically pure R(+)ondansetron |
| KR100434390B1 (en) * | 2001-04-20 | 2004-06-04 | 안국약품 주식회사 | The composition for nasal solution sprays having effective component of 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-y1)methyl]-4H-carbazol-4-one |
| JP5690461B2 (en) * | 2002-11-15 | 2015-03-25 | ヘルシン ヘルスケア ソシエテ アノニム | Palonosetron for treating chemotherapy-induced vomiting |
| NZ541009A (en) * | 2003-01-13 | 2007-09-28 | Dynogen Pharmaceuticals Inc | Method of treating nausea, vomiting, retching or any combination thereof |
| JO2735B1 (en) | 2003-01-30 | 2013-09-15 | هيلسين هيلث كير أس ايه. | Liquid pharmaceutical formulations of palonosetron |
| US8598219B2 (en) | 2003-01-30 | 2013-12-03 | Helsinn Healthcare Sa | Liquid pharmaceutical formulations of palonosetron |
| MY143789A (en) | 2003-02-18 | 2011-07-15 | Helsinn Healthcare Sa | Use of palonosetron treating post- operative nausea and vomiting |
| US7390503B1 (en) | 2003-08-22 | 2008-06-24 | Barr Laboratories, Inc. | Ondansetron orally disintegrating tablets |
| US20060167072A1 (en) * | 2004-01-30 | 2006-07-27 | Helsinn Healthcare Sa | Liquid pharmaceutical formulations of palonosetron |
| US7288660B2 (en) * | 2004-05-07 | 2007-10-30 | Taro Pharmaceutical Industries Limited | Process for preparing ondansetron hydrochloride dihydrate having a defined particle size |
| US20060068010A1 (en) * | 2004-09-30 | 2006-03-30 | Stephen Turner | Method for improving the bioavailability of orally delivered therapeutics |
| US20060293309A1 (en) * | 2005-03-28 | 2006-12-28 | Dynogen Pharmaceuticals, Inc. | Method of treating disorders and conditions using peripherally-restricted antagonists and inhibitors |
| KR101441459B1 (en) * | 2006-10-24 | 2014-09-18 | 헬신 헬쓰케어 에스.에이. | Soft capsules comprising palonosetron hydrochloride having improved stability and bioavailability |
| JP2010050046A (en) | 2008-08-25 | 2010-03-04 | Hitachi High-Technologies Corp | Plasma treatment device |
| WO2011090694A1 (en) | 2009-12-28 | 2011-07-28 | Monosol Rx, Llc | Orally administrable film dosage forms containing ondansetron |
| MX342993B (en) | 2013-04-25 | 2016-10-13 | Inst Mexicano Del Petróleo | Process to obtain random copolymers derived from itaconic acid and/or its isomers and sodium alkenyl sulfonates and use of the product thereof. |
| US20200054611A1 (en) | 2017-01-09 | 2020-02-20 | Gt Biopharma, Inc. | Use and composition for treating myasthenia gravis and other myasthenic syndromes |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0040489A1 (en) * | 1980-05-17 | 1981-11-25 | FISONS plc | Mixtures, salts, packages and pharmaceutical compositions containing 5-(2-hydroxypropoxy)-4-oxo-8-propyl-4H-1-benzopyran-2-carboxylic acid or a derivative thereof and an H2 receptor antagonist antihistamine |
| BE894285A (en) * | 1981-09-04 | 1983-03-02 | Glaxo Group Ltd | PHARMACEUTICAL COMPOSITION CONTAINING AN ANTI-INFLAMMATORY MEDICINAL PRODUCT AND RANITIDINE OR A SALT THEREOF |
| FR2557110B1 (en) * | 1983-12-23 | 1989-11-24 | Sandoz Sa | NOVEL CYCLIC AMINE DERIVATIVES, THEIR PREPARATION AND THEIR USE AS MEDICAMENTS |
| NL190373C (en) * | 1984-01-25 | 1994-02-01 | Glaxo Group Ltd | A 3-SUBSTITUTED AMINOMETHYL-2,3-DIHYDRO-4 (1H) -CARBAZOLONE, PROCESS FOR ITS PREPARATION, AND A PHARMACEUTICAL PREPARATION. |
| US4695578A (en) * | 1984-01-25 | 1987-09-22 | Glaxo Group Limited | 1,2,3,9-tetrahydro-3-imidazol-1-ylmethyl-4H-carbazol-4-ones, composition containing them, and method of using them to treat neuronal 5HT function disturbances |
| EP0191562B1 (en) * | 1985-01-23 | 1991-07-10 | Glaxo Group Limited | Tetrahydrocarbazolone derivatives |
| EP0405617A3 (en) * | 1985-03-14 | 1992-11-25 | Beecham Group P.L.C. | Medicaments for the treatment of anxiety |
| GB8516083D0 (en) * | 1985-06-25 | 1985-07-31 | Glaxo Group Ltd | Heterocyclic compounds |
| GB8630079D0 (en) * | 1986-12-17 | 1987-01-28 | Glaxo Group Ltd | Medicaments |
-
1985
- 1985-06-25 GB GB858516083A patent/GB8516083D0/en active Pending
-
1986
- 1986-06-24 JP JP61147996A patent/JPS6253920A/en active Granted
- 1986-06-24 DE DE3650488T patent/DE3650488T2/en not_active Expired - Lifetime
- 1986-06-24 SG SG1996008047A patent/SG43311A1/en unknown
- 1986-06-24 EP EP19900122615 patent/EP0431443A3/en not_active Withdrawn
- 1986-06-24 AT AT86304831T patent/ATE134510T1/en not_active IP Right Cessation
- 1986-06-24 EP EP86304831A patent/EP0226266B1/en not_active Expired - Lifetime
- 1986-06-24 US US06/877,805 patent/US4753789A/en not_active Expired - Lifetime
- 1986-11-28 GB GB868628474A patent/GB8628474D0/en active Pending
- 1986-12-30 AU AU67037/86A patent/AU609028B2/en not_active Expired
-
1987
- 1987-11-27 JP JP62299653A patent/JPS63198623A/en active Pending
- 1987-11-27 IL IL84638A patent/IL84638A/en not_active IP Right Cessation
- 1987-11-27 DK DK624687A patent/DK624687A/en not_active Application Discontinuation
- 1987-11-27 DE DE19873740351 patent/DE3740351A1/en not_active Withdrawn
- 1987-11-27 IE IE323087A patent/IE60908B1/en not_active IP Right Cessation
- 1987-11-27 BE BE8701354A patent/BE1002249A4/en not_active IP Right Cessation
- 1987-11-27 CH CH4613/87A patent/CH672068A5/fr not_active IP Right Cessation
- 1987-11-27 SE SE8704747A patent/SE8704747L/en not_active Application Discontinuation
- 1987-11-27 ZA ZA878927A patent/ZA878927B/en unknown
- 1987-11-27 NL NL8702853A patent/NL8702853A/en not_active Application Discontinuation
- 1987-11-27 IT IT8748643A patent/IT1211937B/en active
- 1987-11-27 AT AT0312587A patent/AT395374B/en not_active IP Right Cessation
- 1987-11-27 CA CA000552962A patent/CA1296637C/en not_active Expired - Fee Related
- 1987-11-27 FR FR8716489A patent/FR2613934B1/en not_active Expired - Fee Related
- 1987-11-27 GB GB8727836A patent/GB2200046B/en not_active Expired - Fee Related
- 1987-11-30 AU AU81914/87A patent/AU616386B2/en not_active Ceased
- 1987-11-30 NZ NZ222743A patent/NZ222743A/en unknown
-
1988
- 1988-04-04 US US07/177,042 patent/US4929632A/en not_active Expired - Lifetime
-
1997
- 1997-06-19 HK HK82597A patent/HK82597A/en not_active IP Right Cessation
- 1997-12-05 CY CY200097A patent/CY2000A/en unknown
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1296637C (en) | Pharmaceutical composition for the treatment of gastrointestinal disorders | |
| US4835173A (en) | Method of medical treatment | |
| JP2608079B2 (en) | Medicine | |
| US5330982A (en) | Pharmaceutical composition containing a 5-HT receptor antagonist and an H+ K+ Atpase inhibitor and a method of treating gastrointestingal disorders therewith | |
| US4983621A (en) | Medicaments | |
| US5482716A (en) | Medicaments | |
| JP2834175B2 (en) | Medicine | |
| EP0269452A2 (en) | Use of ketone derivatives for the manufacture of medicaments | |
| EP0272876A2 (en) | Use of heterocyclic derivatives for the manufacture of medicaments | |
| CA2022379A1 (en) | Medicaments | |
| EP0275669B1 (en) | Use of heterocyclic derivatives for the manufacture of medicaments | |
| CA1330535C (en) | Medicament for treating depression | |
| US5221687A (en) | Medicaments | |
| GB2212724A (en) | Gastrointestinal medicaments | |
| JPH02180823A (en) | Drug | |
| IE902768A1 (en) | Medicaments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |