Calcium caseinate is a protein derived from casein, a phosphoprotein found in milk. More commonly referred to simply as casein, calcium caseinate is a supplement commonly used in the fitness and bodybuilding industry.
As a dietary supplement, calcium caseinate slows digestion, which helps athletes to avoid the breakdown of muscle. It also helps you to feel fuller for longer, which can help with dieting or with a weight loss programme.
Calcium caseinate coagulates during the digestive process. This means that digestion takes much longer than other forms of protein. This in turn means that the benefits of calcium caseinate are trickle-released over a long period of time; for this reason, many athletes consume calcium caseinate before bed, to help stave off muscle loss overnight.
Calcium caseinate is a good source of glutamine, which is another reason for its popularity in the fitness world. Glutamine is an amino acid which plays a vital role in building muscle and in delaying muscle breakdown. Glutamine is also high in nitrogen.
You can buy calcium caseinate as a protein powder, but it's also available in tablet form.