There are no documented side effects - provided a person does not have an allergy to dairy proteins or does not need to restrict dairy products for medical reasons. If you are allergic to dairy proteins please consult with a physician prior to consuming any type of whey protein.
When it comes to choosing a whey protein supplement that's right for you there are two main things you need to take into consideration budget and quality. As stated above, there are 3 main types of whey protein available:
- Whey protein isolate - the most pure form of whey protein
- Whey protein concentrate - not as pure, slightly higher fat & lactose
- Whey protein blend - a mixture of isolate and concentrate
Obviously, the more pure and high quality the product the higher the price tag. This is why whey protein isolate is the most expensive form of whey protein. But you get what you pay for, pure whey protein is literally zero fat, zero carbs and zero lactose. It's the highest quality protein and will give you the most protein per serving with the least amount of calories. So if you have the money to spend, when protein isolate is the best quality protein available.
