Hemispherx Biopharma, Inc. (Hemispherx) is a specialty pharmaceutical company. The Company is engaged in the clinical development of drug therapies based on natural immune system enhancing technologies for the treatment of viral and immune based chronic disorders. The Company's segment is engaged in research and development activities related to Ampligen and other drugs under development, and sales and marketing of Alferon. The Company's products include Alferon N Injection and Ampligen. Alferon N Injection is approved for the use in intralesional treatment of refractory or recurring external genital warts in patients of over 18 years of age. Ampligen is a drug undergoing clinical development for the treatment of Chronic Fatigue Syndrome (CFS). Alferon LDO (Low Dose Oral Interferon Alfa-n3 (Human Leukocyte Derived)) is a low-dose, oral liquid formulation of natural alpha interferon. Alferon LDO is a liquid natural interferon for oral administration.