First of all, I want to say that protein powder has a safe dose! The general population should supplement per kilogram of body weight 1 gram of protein! Fitness crowd supplements 65438+ 0.5g to 2g protein per kg body weight! Bodybuilders should supplement no more than 3 grams per kilogram of body weight. protein has no side effects! Too much protein powder will cause the loss of calcium! And it will bring load to the liver and kidney! Plus carbohydrates! Oats are the best! If protein powder is compared to car parts, then carbohydrate is gasoline!