This medication is an an antiparkinson and antiviral agent. In flu, Amantadine works by blocking the reproduction of the virus and decrease the ability of the virus to get into the cells. In Parkinson disease, it may increase a certain chemical in the brain.

This drug is used to treat Parkinson’s disease and conditions similar to those of Parkinson’s disease. It also is used to prevent and treat respiratory infections caused by influenza A virus.

Do not use Amantadine if:

  • You are allergic to any ingredient in Amantadine
  • You have uncontrolled narrow-angle glaucoma

If any of these apply to you, contact your doctor or health care provider right away.

Side effects of this drug include:

  • Blurred Vision
  • Dizziness
  • Lightheadedness
  • Faintness
  • Trouble Sleeping

If any of these apply to you, contact your doctor or health care provider right away.

  • Depression Or Anxiety
  • Swelling Of The Hands, Legs, Or Feet
  • Difficulty Urinating
  • Shortness Of Breath
  • Rash


This medicine may cause blurred vision. Be careful when driving or doing things requiring alertness.

Before taking Amantadine, tell your doctor:

  • If you are allergic to Amantadine or any other drugs.
  • What prescription and nonprescription medications you are taking, especially benztropine (Cogentin), hydrochlorothiazide with triamterene (Maxzide, Dyazide), medication for depression, other medication for Parkinson’s disease, medication for spasms of the stomach or intestines, stimulants, trihexyphenidyl (Artane), and vitamins.
  • If you have epilepsy or any other type of seizures, or have ever had heart, kidney, or liver disease, heart failure, low blood pressure, recurring skin rash, or mental illness.
  • If you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking Amantadine, call your doctor immediately. Amantadine may cause harm to the fetus.



  • Anticholinergic agents or levodopa may increased risk of confusion, hallucinations, nightmares, GI disturbances or other atropine-like side effects.
  • Concomitant neuroleptic medication may worsen psychotic symptoms
  • Additive CNS toxicity with drugs acting on CNS. Reduced renal clearance with
  • Quinine or quinidine may reduced renal clearance.

Call emergency hotline if someone has overdosed and has serious symptoms such as passing out or trouble breathing.


Available brands:

  • PK-merz

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