Amantadine

— THERAPEUTIC CATEGORIES —
  • Parkinsonism
  • Viral infections

Amantadine Generic Name & Formulations

General Description

Amantadine HCl 100mg; tabs.

Pharmacological Class

Dopamine agonist.

See Also

How Supplied

Contact supplier.

Amantadine Indications

Indications

Parkinsonism. Drug-induced extrapyramidal reactions.

Amantadine Dosage and Administration

Adult

Parkinsonism monotherapy: initially 100mg twice daily, may increase after 1–2 weeks by 100mg daily. Serious associated illness or high doses of other antiparkinson drugs: 100mg once daily, may increase after 1 to several weeks to 100mg twice daily; max 400mg/day in divided doses. Extrapyramidal disorders: 100mg twice daily; max 300mg/day in divided doses. Renal dysfunction: reduce dose; see literature.

Children

Not recommended.

Amantadine Contraindications

Not Applicable

Amantadine Boxed Warnings

Not Applicable

Amantadine Warnings/Precautions

Warnings/Precautions

Adjust dose gradually. History of seizures. Heart failure. Orthostatic hypotension. Peripheral edema. Renal (CrCl <50mL/min) or hepatic dysfunction. Psychiatric disorders. Suicidal ideation. History of recurrent eczematoid rash. Elderly. Pregnancy (Cat.C). Nursing mothers: not recommended.

Amantadine Pharmacokinetics

See Literature

Amantadine Interactions

Interactions

Caution with CNS stimulants. Thioridazine may worsen tremor in elderly patients with parkinsonism.

Amantadine Adverse Reactions

Adverse Reactions

Neuroleptic malignant syndrome (when drug is withdrawn or dose is reduced), nausea, dizziness, insomnia, heart failure, anxiety, irritability, hallucinations, confusion, anorexia, anticholinergic effects, constipation, ataxia, livedo reticularis, peripheral edema, orthostatic hypotension, headache, somnolence, dream abnormality, diarrhea, fatigue.

Amantadine Clinical Trials

See Literature

Amantadine Note

Notes

Formerly known under the brand name Symmetrel.

Amantadine Patient Counseling

See Literature

Amantadine Generic Name & Formulations

General Description

Amantadine HCl 100mg; tabs.

Pharmacological Class

Adamantane.

See Also

How Supplied

Contact supplier.

Amantadine Indications

Indications

Prophylaxis and treatment of influenza A infections.

Amantadine Dosage and Administration

Adult

200mg daily in 1–2 divided doses. Elderly: 100mg/day. Renal dysfunction: reduce dose; see literature.

Children

<1yr: not recommended. 1–9yrs: 4.4–8.8mg/kg per day; max 150mg daily. 9–12yrs: 100mg twice daily. Renal dysfunction: reduce dose; see literature.

Amantadine Contraindications

Not Applicable

Amantadine Boxed Warnings

Not Applicable

Amantadine Warnings/Precautions

Warnings/Precautions

History of seizures. Heart failure. Orthostatic hypotension. Peripheral edema. Renal (CrCl <50mL/min) or hepatic dysfunction. Psychiatric disorders. Suicidal ideation. History of recurrent eczematoid rash. Elderly. Pregnancy (Cat.C). Nursing mothers: not recommended.

Amantadine Pharmacokinetics

See Literature

Amantadine Interactions

Interactions

Caution with CNS stimulants.

Amantadine Adverse Reactions

Adverse Reactions

Neuroleptic malignant syndrome (when drug is withdrawn or dose is reduced), nausea, dizziness, insomnia, heart failure, anxiety, irritability, hallucinations, confusion, anorexia, anticholinergic effects, constipation, ataxia, livedo reticularis, peripheral edema, orthostatic hypotension, headache, somnolence, dream abnormality, diarrhea, fatigue.

Amantadine Clinical Trials

See Literature

Amantadine Note

Notes

Formerly known under the brand name Symmetrel.

Amantadine Patient Counseling

See Literature