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Flumadine Dosage

The recommended Flumadine dosage for treating the flu in adults is 100 mg twice daily. For preventing the flu in people age 10 and over, the same dosage is recommended. A lower dosage is typically recommended for people with kidney failure or severe liver disease, as well as people who live in nursing homes.

Flumadine Dosage: An Introduction

The dose of Flumadine® (rimantadine hydrochloride) that your healthcare provider recommends will vary depending on a number of factors, including:
  • Whether you are treating or preventing the flu
  • Your age  
  • Your kidney and liver function
  • Other medications you may currently be taking.
As always, do not adjust your Flumadine dose unless your healthcare provider specifically instructs you to do so.

Flumadine Dosing for Flu Treatment

The recommended Flumadine dose for treating the flu in adults and adolescents age 16 years and older is 100 mg twice daily. Flumadine is not approved for treating the flu in children under the age of 16 years of age.


A lower dose (Flumadine 100 mg once daily) is recommended for people with kidney failure or severe liver disease and for elderly nursing home residents. For flu treatment, Flumadine should be started as soon as possible within 48 hours of the start of flu symptoms. It should be continued for about seven days after the first symptoms.
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