Sustained release powders mean that when consumed, the user gets an a ongoing release for a number hours later due to the various forms of protein contained in the powder. Sustained Release Proteins can be utilised at anytime of the day or night and are also suitable as a meal replacement if need be. They are generally fast release protein mixed with slower release to give that timed release effect.

The types of  Protein found in Sustained Release powders are:

Whey Protein Concentrate is the result of purifying standard Whey Protein. Much of the lactose, fat and impurities are removed by Ultra-filtration to give a high protein (80%) concentrate that also exhibits extraordinary health and immune enhancing properties. Instantised WPC is achieved through a special process of coating WPC granules with a small amount of lecithin – allowing the WPC to mix faster and more completely – giving you faster uptake and more growth.

WPC consists of a number of protein ‘fractions’ – which contain protein peptides of specific molecular weights. These protein fractions include Lactoglobulin, Lactoalbumin, Glycomacropeptides, Bovine Serum Albumin, Immunoglobulins, Lactoferrin, Lactoperoxidase, and the Growth Factors IGF-1, IGF-2 & TGF. Studies have demonstrated a wide range of clinical and health benefits of these protein fractions including improved immune response and antibiotic properties. Not only will WPC help you build muscle but it will enhance your overall health! 

Whey Protein Isolate is the highest yield of protein currently available, it's a derivative of milk protein. Its short chains and peptides make it available for absorption within ten minutes of ingestion sometimes. It is generally 90% protein by dry weight.

*Whey is the best investment as a post-workout recovery supplement  because of its naturally high occurring amino acids like BCAA’s and Glutamine.  That critical time after severe physical stress when the cells will act like a sponge and take in almost anything. The extreme hunger of the cells and the fast-acting properties of whey will make sure you use the best window for recovery to the fullest. If not, the body will hunt the stored reserves of nutrients and when on a diet for example that will cause them to rob other muscle-tissue of glutamine. 

CASEIN

Milk protein is made up of about 80% casein and 20% whey protein. Casein has been around for a long time but it doesn't have the high profile among body-builders that whey protein does. The two main types of caseinate are sodium and calcium. Sports people & Bodybuilders tend to use calcium caseinate for its lower sodium content and also because it absorbs a lot of moisture for a filling meal. It can also be mixed with neutral fruits and juices like pear and peach to make a high protein mouse-like dessert. Casein is not acid soluble so don't try to mix it with pineapple juice or other acidic juices or it will go grainy.

SOY PROTEIN ISOLATE

Until recently soy protein was seen by bodybuilders and nutritionalists alike as a 'second class' protein, being incomplete in it's essential amino acid profile. The new Soy Protein Isolates on the market, in particular the Supro brand isolates have been shown to have the same quality as casein and whey proteins and have all the essential amino acids required to be used as the sole source of protein. Good news for vegetarians.

EGG WHITE PROTEIN

Spray dried egg whites are used in some 'egg and milk' protein powder mixes. Egg whites were once considered essential to a bodybuilding diet, but with the introduction of whey proteins they have lost popularity as a supplement.

Sustained Release proteins are good meal replacement powder and is of a much higher quality than those "diet" powders sold by some pharmacies.