Drugs & Cosmetics Act & Rules recognise Indian Pharmacopoeia, Ayurvedic Pharmacopoeia of India, Siddha Pharmacopoeia of India, Unani Pharmacopoeia of India and Homoeopathy Pharmacopoeia of India under regulatory frame work. These pharmacopoeias have incorporated a number of monographs which are common in respect of botanical source of drugs but vary in standards. The aim of harmonization of monographs is to arrive at identical requirements for all attributes of a herbal drug notable with the simplification and standardizations of quality control methods. Harmonization of monographs on common herbal drugs (botanical species) in these pharmacopoeias is needed to avoid confusion in varying specifications.