Hello friends, I have used this herbalife formula 1 about one year. As the company promised that it will help you to loose weight as well as to build muscles. But, unfortunately it does not worked. I was doing my best strength training in the gym and my diet was also very well. After using it for so many months I found that I have dropped only a few pounds, and not gained a single pound of the muscle mass. This product is very expensive also, as the half kg of this product costs about 2000 rs. So, I would suggest you that don’t ever thik to buy this product if you are serious in your fitness goals, Add some money and Buy a whey Protein as it will help you to gain muscle mass as well as to drop your body weight.