Whey protein powder and Herbalife shakes are commonly used by people who go to the gym to support muscle recovery, weight management, or daily nutrition. In healthy people, they are usually safe when taken in the right amount, but side effects can still happen in some cases. Problems such as bloating, stomach discomfort, acne, nausea, loose motions, or gas may occur, especially if the body does not tolerate certain ingredients well. Using too much protein for a long time may also put extra strain on the kidneys in people who already have kidney problems. Some supplements may contain added sugar, caffeine, or herbal ingredients that may not suit everyone. It is better to choose products from trusted brands and avoid taking multiple supplements together without guidance. Any supplement should ideally be selected according to your diet, workout level, and health condition. Focus on balanced meals, adequate water intake, proper sleep, regular exercise, and supplements. Please consult a doctor or nutrition expert if you develop an allergy, severe stomach issues, dizziness, or unusual weakness after using them.