When and How to Take It

Some general considerations for when and how to take amantadine include the following:
  • The medication comes in the form of a tablet and syrup (the generic version is also available as a capsule). It is usually taken by mouth once or twice a day.
  • You can take amantadine with or without food. If the medication bothers your stomach, try taking it with food.
  • For treating the flu, amantadine works better the earlier it is started. Ideally, it should be started within 24 to 48 hours of the onset of flu symptoms.
  • For the medication to work properly, it must be taken as prescribed. Amantadine will not work if you stop taking it or stop taking it too soon.

Who Makes It?

Brand-name amantadine is manufactured by Endo Pharmaceuticals, Inc. Generic versions of the drug are made by various manufacturers.

Available Strengths

Amantadine is available in the following strengths and forms:
  • Amantadine 100 mg tablets
  • Amantadine 50 mg/5 mL syrup, which contains 50 mg of medication per 5 mL (per teaspoonful) and is raspberry-flavored.
Generic amantadine (but not the brand-name version) also comes in capsule form (100 mg).

Is There a Generic Version of Amantadine?

Currently, generic amantadine tablets, capsules, and syrup are available (see Generic Symmetrel).
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Amantadine Hydrochloride (HCL)

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