Is Whey Protein hard on the liver?
There is no evidence that the proper use of whey protein or a high protein diet can cause damage to your liver. In fact your liver needs protein for healthy function. Protein is not just important for muscle cell growth but for the regeneration of new liver cells. Protein also helps remove fats from your liver.
The exception to this is where there is a preexisting liver condition such as cirrhosis. Cirrhosis impairs liver function and protein intake can raise ammonia levels in your blood which a weakened liver can have trouble filtering out. If you have liver disease you should consult with your doctor before taking whey protein powder.