Protein powder varies widely in price, is often mixed with other additives including creatine, caffeine, flavoring, various carbohydrates, extracts, essences, or magic potions in super-secret-proprietary proportions. They are almost always accompanied by extraordinary claims like “Improved flavor!” (which means it tastes terrible but formerly tasted worse), “Build Muscle FAST!” (Disclaimer: intense exercise not included), “Get Ripped QUICK!” (Disclaimer: intense exercise not included AND don’t expect to eat anything else).