You can measure your body fat first and see why you are so heavy. The isolate whey protein, known as that king of egg white, is a kind of protein extract from milk, which has the characteristics of high nutritional value, easy digestion and absorption, and contains a variety of active ingredients, and is recognized as one of the high-quality protein supplement for human body. Whey protein is extracted from milk. The composition of milk is 87% water and 13% milk solids. In milk solids, 27% is milk protein, while in milk protein, only 20% is whey protein, and the remaining 80% is casein, so the content of whey protein in milk is only 0.7%, which is precious. Whey protein has less fat. There is nothing wrong with the stomach, or lactose intolerance, and whey separation is not needed. That's more expensive. I took this from PQ Fitness, which is the whey protein you mentioned ~

The one in the middle, it says ISO.