Adults: The recommended adult dose of Flumadine is 100 mg twice a day. In patients with severe hepatic dysfunction, renal failure (CrCI ≤10 mL/min.) and elderly nursing home patients, a dose reduction to 100 mg daily is recommended. There are currently no data available regarding the safety of rimantadine during multiple dosing in subjects with renal or hepatic impairment. Because of the potential for accumulation of rimantadine metabolites during multiple dosing, patients with any degree of renal insufficiency should be monitored for adverse effects, with dosage adjustments being made as necessary.

In children less than 10 years of age, Flumadine should be administered once a day, at a dose of 5 mg/kg but not exceeding 150 mg. For children 10 years of age or older, use the adult dose.

The recommended adult dose of Flumadine is 100 mg twice a day. In patients with severe hepatic dysfunction, renal failure (CrCI ≤10 mL/min) and elderly nursing home patients, a dose reduction to 100 mg daily is recommended. There are currently no data available regarding the safety of rimantadine during multiple dosing in subjects with renal or hepatic impairment. Because of the potential for accumulation of rimantadine metabolites during multiple dosing, patients with any degree of renal insufficiency should be monitored for adverse effects, with dosage adjustments being made as necessary. Flumadine therapy should be initiated as soon as possible, preferably within 48 hours after onset of signs and symptoms of influenza A infection. Therapy should be continued for approximately seven days from the initial onset of symptoms.^[1]

Adapted from the FDA Package Insert.