"His argument was that he could guarantee the quality and supply" That's a very weak argument. I'm not a fan of practitioners that pimp out their own supplement line. On top of other expenses the last thing we need is inflated prices for supplements. A truly sympathetic doctor would provide information on how to obtain quality and affordable supplements, not look for a way to profiteer from it. He'd probably rather not know about the existence of iherb. " Furthermore, I had too many questions regarding how he arrived at his diagnosis and at the effectiveness of his treatments, considering I had no improvement after several months." That says a lot.