Objective: Study of CNS activities of piperine perse and its bio-enhancing effect on various drugs in experimental animal models.Methods: The CNS effects of piperine and its interaction with various drugs were evaluated by maximal electroshock convulsion model, pentobarbitone-induced sleeping time, anxiolytic activity, muscle relaxant activity and antidepressant activity using tail suspension and forced swimming test using standard procedures in experimental animal models. piperine at a dose of 10 and 20 mg/kg orally was used to evaluate CNS activities.Results: The results revealed that piperine perse posses only anticonvulsant activity and other significant CNS effects were not observe. But when it was combined with various drugs piperine increases the effect of the standard drug.Conclusion: Piperine 10 mg/kg has the potential to be used as a bio-enhancing agent when combined with other drugs. Bio-enhancing effect of piperine will decrease the dose of the standard drug, thereby decreasing the risk of their toxicity.Keywords: Piperine, Bio-enhancing, MES, Anxiolytic test, Tail suspension test, Forced swimming test, Motor co-ordination, Righting refle
