It has been claimed by the ayurvedic pharmacies in India that the herbal medicines are very good for so many diseases. In an article, few months ago, I read that the Indian herbal pharmacies use ARISTOLOCHIC acid to manufacture most of the Indian herbs. This acid is known to cause cancer. None of the Indian herbal pharmacies have responded to this article, creating a big doubt of using the acid, and its effects. Can somebody make anykind of clarification as the action of the Indian herbal medicines pharmacies is shrouded. Nothing is clear about the use of such substances, which surround a human being with more diseases than these medicines cure him.