Symadine

Amantadine is a prescription medication used to treat Parkinson's disease and symptoms similar to Parkinson's disease. It also is used to prevent and treat certain viral infections. Amantadine belongs to a class of drugs called antiviral agents, which stop the ability of the virus from spreading. It is not known how it works to treat Parkinson’s disease and similar conditions.

This medication comes in tablet, capsule, and syrup forms and is taken once or twice a day, with or without food.

Common side effects of amantadine include nausea, lightheadedness, and insomnia. Amantadine can also cause blurry vision. Do not drive or operate heavy machinery until you know how amantadine affects you.

The brand versions are no longer available on the market for use. The generic form, amantadine, is available for prescription purposes.

Amantadine is a prescription medication used to treat Parkinson's disease and symptoms similar to Parkinson's disease. It also is used to prevent and treat certain viral infections caused by a type of virus (influenza virus A).

This medication may be prescribed for other uses. Ask your doctor or pharmacist for more information.

Common side effects of amantadine include the following:

• nausea
• lightheadedness
• insomnia
• depression
• anxiety and irritability
• hallucinations
• confusion
• anorexia
• dry mouth
• constipation
• loss of muscle coordination/control
• a netlike pattern of reddish-blue skin discoloration, usually on the legs
• swelling of arms, legs, or feet
• dizziness upon rising from a sitting position
• headache
• sleepiness
• nervousness
• abnormal dreams
• dry nose

This is not a complete list of amantadine side effects. Ask your doctor or pharmacist for more information.

Serious side effects have been reported with amantadine.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.