Nitro Tech has led the way in whey protein innovation. And now new Nitro Tech Casein Gold is here! This advanced protein powder features multiple premium casein protein sources for optimal digestion rate and superior BCAAs profile! Casein protein and milk protein are some of the slowest-digesting proteins available – much slower than whey protein and whey protein isolate. Nitro Tech Casein Gold delivers 24 grams of high-quality casein protein taken from multiple premium casein sources for a prolonged amino acid release to feed your muscles for up to 8 hours.