Let me tell you about my experience with this product. If you read "about me" you know that at one point I was working full time as an ER nurse and trained full time to complete in the Olympics in boxing. I worked 3 twelve hour shifts a week. before and after work I ran 1 to 3 miles. On my days off, I trained 6 hours a day. It was incredibly  Intense boxing training, had dinner, then did a boot camp class. I was burning 6000 calories a day easily. Mind you I had to maintain 112 lbs. So, I was unable to eat a high calorie diet. I started to get sick.  My friend told me about this product she was taking and how well it worked for her, so I started to take it as well. It made all the difference, in one month I was stronger, had more energy, and was no longer sick. I was able to compete with women half my age!! I still take this product to this day. click on the link below. there is more info/videos regarding its nutritional value, it's all natural. NO FILLERS! It is backed by many MD's. If you have questions, consult me .