I have been taking Oxy Element Max for 3 weeks now - I notice a change in my energy level, I also have severe thrush problems every month and about a week after I started taking this the problems dissappeared. I am hoping that this continues and will keep taking it. Also my digestive system is working a lot better, this stuff cleanses you in every way. Had a few headaches at first but nothing that bothered me too much. Great product will continue to purchase.