I first learned about oregano oil Years ago when Dr. Cass Ingram came on a show called Know The Cause. This was my FIRST big success and I started taking his p-73 formula and it pretty much wiped out any illness I had. Just saddened to hear that he's gone corrupt! When did this happen and why? He seems to still promote the oregano oil BUT he now is a commercial for that herb company called North American Herbs and Spice. Money always gets the best of ya! I have to say though I have alot of his first books and they really did help me. Just too bad huh!