Amantadine is an antiviral medication that is also used to manage symptoms of parkinson's disease. It functions by blocking the reuptake of dopamine in the brain. This inhibition increases dopamine availability which helps to reduce motor deficits associated with the disease. In addition to its central action it also reduces the replication of certain rna viruses such as influenza a. The antiviral effect arises from interference with viral protein synthesis and particle assembly. Clinically it is prescribed to alleviate freezing episodes and improve movement control in patients with movement disorders. Pharmacodynamically the drug acts as a noncompetitive antagonist at nmda receptors enhancing glutamatergic neurotransmission in some pathways. By modulating both dopaminergic and glutamatergic systems Amantadine provides symptomatic relief without altering disease progression.

Amantadine is an antiviral medication that also treats parkinson's disease and drug-induced movement disorders. It works by blocking the nmda glutamate receptor to reduce neuronal excitability. This antagonism decreases abnormal brain activity associated with viral infection and motor dysfunction. By modulating dopamine transmission it helps restore normal movement control in parkinsonian patients. The drug also reduces influenza virus replication by inhibiting the viral uncoating process. Overall Amantadine provides symptomatic relief through these combined central nervous system effects.

Amantadine may cause insomnia or vivid dreams in some individuals. It is also associated with dizziness, lightheadedness, and occasional headaches. Some patients experience nausea, dry mouth, or a loss of appetite. In certain cases, visual disturbances such as blurred vision can occur. Rarely, mood changes including anxiety or depression have been reported. Neurological symptoms like tremor or unsteady gait may appear, especially at higher doses.

Amantadine can cause dizziness or lightheadedness in some individuals. It may lead to difficulty sleeping or vivid dreams. Dry mouth and constipation are common complaints. Some people experience nausea or loss of appetite. Swelling of the ankles or feet can occur as a fluid retention effect. Confusion or memory problems have been reported especially in older adults. Vision changes such as blurred sight may appear temporarily. Low blood pressure can cause faintness when standing up quickly.