Premium quality whey protein 24g whey protein isolate per serving 1g fat and 3g carbs per serving whey protein isolates are the primary protein source in optimum nutrition gold standard 100 whey with 24 grams in each serving whey protein isolates are a by product of milk suitable for adults wishing to increase their daily intake of protein to aid recovery after exercise and obtain essential and non essential amino acids which are the building blocks of protein with a tasty vanilla ice