USN PREMIUM 8 HR CASEIN contains pure spray-dried calcium caseinate and Aminogen®. It supports rapid, complete muscle recovery and is scientifically formulated to ensure an optimal, steady amino acid release into the body, without any bloating effects. Unlike whey, which is absorbed quickly in the body, calcium caseinate is an insoluble, slow digesting, milk-derived protein. Calcium caseinate can take up to four hours to digest. This makes calcium caseinate an excellent choice of protein right before bedtime, since it offers a slow, steady synthesis of aminos, promoting muscle mass. It has also been shown to be anti-catabolic. Aminogen® is a patented, designer enzyme which breaks down protein and improves amino acid absorption. A natural, plantderived enzyme, Aminogen® is ideal for increasing lean body mass and strength and promoting deep muscle recovery. It has been shown to increase Branched Chain Amino Acid (BCAA) absorption specifically, as well as nitrogen retention. Aminogen® does all this while supporting protein digestion and reducing or eliminating the gas, bloating and constipation protein can sometimes cause.