VIREGYT-K 100mg capsules medication leaflet

N04BB01 • amantadine • Nervous system | Dopaminergic agents | Adamantane derivatives

Amantadine is a medication primarily used for the treatment of Parkinson's disease and parkinsonian symptoms, such as muscle rigidity, tremors, and bradykinesia. It is also used for the prevention and treatment of infections caused by influenza A virus, although its antiviral use has declined in favor of more effective medications.

In Parkinson's disease, amantadine works by increasing dopamine release and reducing its reuptake in the brain, thereby improving motor symptoms. It is taken orally, in capsule or tablet form, with the dose adjusted based on the patient’s response.

Side effects may include dizziness, nausea, insomnia, dry mouth, confusion, or hallucinations, particularly in elderly patients. In rare cases, it can cause a condition called livedo reticularis, characterized by purplish discoloration of the skin. The medication should be taken as prescribed by a doctor, and patients with renal impairment or other chronic conditions should be closely monitored.