<prompt> Pharmacovigilence is done for:Pharmacy companiesTo monitor potency and efficacyMonitoring adverse effects of drugsMonitoring ethical drug  <response>: Ans. c Monitoring adverse effects of drugs Pharmacovigilance is the science and activities relating to the detection assessment, understanding and prevention of adverse effects or any other possible drug- related problems. Recently, its concerns have been widened to include herbals, traditional and complementary medicines, blood products, biologicals, medical devices and vaccines. 