42 grams of good protein. Goes down pretty easy and is good for adding extra protein to your diet. I wouldnt go as far to say that it is a valid replacement for a postworkout shake because it lacks carbohydrates, healthy/necessary fats, or any other vitamins and minerals that are commonplace in postworkout shakes. But for supplementing a postworkout meal or any low protein meal during the day its perfect. Little pricey but certain websites have them pretty cheap.