I've been using Oxygen Elements Max for at least a year, probably longer. I really noticed a lift in the fatigue I often feel due to Candidiasis, and swear by it now, I am never without it! I take it twice a day (although I try to remember to take it 3 times, with every meal) and the recommended dose, and I need to take it this much to see the benefits. It fills your blood and body with oxygen which is very anti-Candida and also helps with fatigue. Heartily recommend it.