The dried mature roots of Withania somnifera (L.) Dunal are specified source of drug named ‘Asgand’ or ‘Ashwagandha’. The drug is highly regarded for varied therapeutic values in Unani, Ayurvedic, Siddha and Homoeopathic system of medicine. The drug has been compared to Panax ginseng for its endurance - enhancing properties. The drug enjoys the official status in Unani Pharmacopoeia of India, Ayurvedic Pharmacopoeia of India, Siddha Pharmacopoeia of India, Homoeopathic Pharmacopoeia of India and Indian Pharmacopoeia. Pharmacopoeial monographs are regulatory standards and mandatory for compliance to ensure the quality, safety and efficacy of drug. This communication reviews the pharmacopoeial monographs and analytical parameters specified in pharmacopoeial and pharmacopoeial

publications with a view on harmonization of quality specifications on W. somnifera of drug in pharmacopoeias.