Perivas is used to relieve neurological symptoms in traumatic brain injuries, stroke, and cerebral ischemia. It is also used for age related memory loss, vascular dementia, Alzheimer's disease, Parkinson’s disease, attention deficit-hyperactive disorder (ADHD). Perivas description Pharmacology is a crucial part of medicine wherein various drugs are used to advance the well-being of an individual. Some drugs cure the infection or a disease; few prevent the occurrence of a symptom or a disease, and few are used in long-term treatment of the disease. Drugs are obtained from the plants as well as they can be synthesized organically. The drugs are used in various combinations or a single drug by the pharmaceutical industry during its preparation. The half-life of each drug is different, and the dosage of the drug depends on the half-life of the drug. The below information gives the detailed description of Perivas .