As a general rule I don't take this kind of product because it has a bazillion components so it is hard to tell what's helping and what's harming. In this case I was looking for a supplement to support my daughter's diet as I suspected that she wasn't eating properly at college. I was looking for one that has veggies, berries and other antioxidants. Among the variety that I found, this one also had probiotics, fiber, liver support and medicinal mushrooms, so I thought, "what the heck" and invested in a couple of bottles. Daughter said she felt a lot better within a couple of days -- more mental and physical energy. When she quit taking it, she noticed a big difference. After a couple of months, I decided to try it, too. I was very surprised to notice how quickly I noticed an improvement in energy. I've used it on and off for more than a year and always feel better on it. I really don't know what about this product is making us feel better. It might be the immune supporting medicinal mushrooms, I suppose, but really it could be any of a number of the components. I have no idea if this product (which is kinda pricey -- ~$1.25 daily) will be of any help to anyone else, but I thought I'd throw it out here in case anyone else wants to give it a go. Paradise Herbs ORAC-Energy Greens http://www.iherb.com/Paradise-Herbs-ORAC-Energy-Greens-120-Veggie-Caps/23550 It also comes in a cheaper powder form and a powder form with pea protein added. Sorry to sound like a commercial. I'm not trying to push the product, just figured it wouldn't hurt to share something unexpected that is working for us.