The Government of India set up the Ayurvedic, Siddha, Unani and Homoeopathic Pharmacopoeia committees in the year 1962, 1975 & 1964 &1962 respectively. These four committees are supported technically by the Pharmacopoeial Laboratory for Indian Medicine (PLIM) and Homoeopathic Pharmacopoeia Laboratory situated at Ghaziabad which are apex laboratories dedicated to developing Pharmacopoeial Standards of Indian and Homoeopathic Medicine. The existing Pharmocopoeia work in Ayurveda Siddha,Unani and Homoeopathy is being done presently by these Committees which have published standards on single drugs and multi ingredient formulations of Ayurvedic , Siddha, Unani and Homoeopathy. There are about 2000 single drugs and an equal number of compound formulations where standards are yet to be developed.