Amantadine (brand name: Symmetrel) is a synthetic (man-made) anti-viral drug that can inhibit the replication of viruses in cells. To prevent a viral infection, the drug should be present before exposure to the virus. Clearly, this is not practical for most viral infections. It was initially used to prevent influenza A during flu season, and, if given within 24 to 48 hours of the onset of flu symptoms, to decrease the severity of the flu. Later amantadine was found to cause improvement in the symptoms of Parkinson's disease. Amantadine's mechanism of action in Parkinson's disease is not fully understood. Its effects may be related to its ability to augment (amplify) the effects of dopamine, a neurotransmitter in the brain, that is reduced in Parkinson's disease. Amantadine is less effective than levodopa in Parkinson's disease but can offer additional benefit when taken with levodopa. Amantadine was approved by the FDA in 1966.

Selegiline protects against aging of the brain, enhances mental function. A powerful remedy against Parkinson's disease, Selegiline is effective also as an antidepressant and as a protector against Alzheimer's disease. Professor Knoll, who developed Selegiline is convinced of its anti-aging effect and recommends for this a dose 5 mg per week (in two doses of 2.5 mg each). Packing: Box of 30 tablets, 5 mg