Product Description.:
GG 634, GG 634
capsule , red , oblong oblong
White ink
Amantadine hydrochloride is designated chemically as 1-adamantanamine hydrochloride.
Amantadine hydrochloride is a stable white or nearly white crystalline powder, freely soluble in water and soluble in alcohol and in chloroform.
Amantadine hydrochloride has pharmacological actions as both an anti-Parkinson and an antiviral drug.
Each tablet intended for oral administration contains 100 mg amantadine hydrochloride and has the following inactive ingredients: microcrystalline cellulose, povidone, sodium starch glycolate, magnesium stearate, colloidal silicon dioxide, FD&C Yellow No. 6 Aluminum Lake.
INDICATIONS AND USAGE
Amantadine Hydrochloride Tablets are indicated for the prophylaxis and treatment of signs and symptoms of infection caused by various strains of influenza A virus. Amantadine Hydrochloride Tablets are also indicated in the treatment of parkinsonism and drug-induced extrapyramidal reactions.
Influenza A Prophylaxis: Amantadine Hydrochloride Tablets are indicated for chemoprophylaxis against signs and symptoms of influenza A virus infection when early vaccination is not feasible or when the vaccine is contraindicated or not available. In the prophylaxis of influenza, early vaccination on an annual basis as recommended by the Centers for Disease Control's Immunization Practices Advisory Committee is the method of choice. Because Amantadine Hydrochloride Tablets do not completely prevent the host immune response to influenza A infection, individuals who take this drug may still develop immune responses to natural disease or vaccination and may be protected when later exposed to antigenically related viruses. Following vaccination during an influenza A outbreak, Amantadine Hydrochloride Tablets prophylaxis should be considered for the 2- to 4- week time period required to develop an antibody response.
Influenza A Treatment: Amantadine Hydrochloride Tablets are also indicated in the treatment of uncomplicated respiratory tract illness caused by influenza A virus strains especially when administered early in the course of illness. There are no well-controlled clinical studies demonstrating that treatment with Amantadine Hydrochloride Tablets will avoid the development of influenza A virus pneumonitis or other complications in high risk patients.
There is no clinical evidence indicating that Amantadine Hydrochloride Tablets are effective in the prophylaxis or treatment of viral respiratory tract illnesses other than those caused by influenza A virus strains.
Parkinson's Disease/Syndrome: Amantadine Hydrochloride Tablets are indicated in the treatment of idiopathic Parkinson's disease (Paralysis Agitans), postencephalitic parkinsonism, and symptomatic parkinsonism which may follow injury to the nervous system by carbon monoxide intoxication. It is indicated in those elderly patients believed to develop parkinsonism in association with cerebral arteriosclerosis. In the treatment of Parkinson's disease, Amantadine Hydrochloride Tablets are less effective than levodopa, (-)-3-(3,4-dihydroxyphenyl)-L-alanine, and its efficacy in comparison with the anticholinergic antiparkinson drugs has not yet been established.
Drug-Induced Extrapyramidal Reactions: Amantadine Hydrochloride Tablets are indicated in the treatment of drug-induced extrapyramidal reactions. Although anticholinergic-type side effects have been noted with Amantadine Hydrochloride Tablets when used in patients with drug-induced extrapyramidal reactions, there is a lower incidence of these side effects than that observed with the anticholinergic antiparkinson drugs.
CONTRAINDICATIONS
Amantadine Hydrochloride Tablets are contraindicated in patients with known hypersensitivity to amantadine hydrochloride or to any of the other ingredients in Amantadine Hydrochloride Tablets.
WARNINGS
Deaths: Deaths have been reported from overdose with amantadine. The lowest reported acute lethal dose was 1 gram. Acute toxicity may be attributable to the anticholinergic effects of amantadine. Drug overdose has resulted in cardiac, respiratory, renal or central nervous system toxicity. Cardiac dysfunction includes arrhythmia, tachycardia and hypertension (see OVERDOSAGE).
OVERDOSAGE
Deaths have been reported from overdose with amantadine. The lowest reported acute lethal dose was 1 gram. Because some patients have attempted suicide by overdosing with amantadine, prescriptions should be written for the smallest quantity consistent with good patient management.
Acute toxicity may be attributable to the anticholinergic effects of amantadine. Drug overdose has resulted in cardiac, respiratory, renal or central nervous system toxicity. Cardiac dysfunction includes arrhythmia, tachycardia and hypertension. Pulmonary edema
