Yes, there is a lot of mixture in the Ayurvedic treatment these days, which is a concern so the source is important. Sri Sri is quite authentic and reliable. I had some very bad experience with Ayurvedic in the past, the problem is that the plants and herbs they use, where they grow matter a lot, if the land is filled with toxins, the heavy metals will also get into the medicines made of those plants and those Ayurvedic medicines more then good they will do harm. But Sri Sri treatments are safe and authentic, the medicines they make also go through the metal test.