Medicinal plants are nature s hidden and to a large extent unexplored treasure. Although they have been used as a source of safe and effective medicine since time immemorial, this potential resource has hardly been commercially tapped. India is endowed with about 8000 species of medicinal plants. According to a recent estimate of the Planning Commission, Government of India, the potential for plant-based crude drugs is about Rs. 400 billion. Globally, the demand for medicinal plants and their derivatives is growing at a rate of 7-15%. Ayurveda have already mentioned herbal remediation for a number of human ailments. Among Indian traditional medicinal plants several potential anti-diabetic plants and herbs are being used as part of our diet since prehistoric time. India has a long list of native medicinal plants with confirmed blood sugar lowering property.