Micellar Casein from Reflex Nutrition is an instant mixing time-release protein product that is made from fresh skimmed milk. It is not to be confused with acid casein or caseinates which are made using manufacturing processes which can denature the protein. The protein found in Micellar Casein is un-denatured, providing approximately 80% Casein protein and 20% Whey protein.
In a ground breaking study(1), carried out by Dr Yves Boire, the differences in metabolic responses of Whey Protein and Casein were individually observed over a 7 hour period in 16 young & healthy volunteers. The findings were very interesting, and have shown that both Casein and Whey have very different applications when it comes to maintaining and building muscle tissue.

The most important findings were:

i) Casein was found to inhibit muscle breakdown by 34% over a 7 hour period.

ii) Blood plasma amino acid concentrations remained significantly higher over a 7 hour period with casein compared to whey.

iii) Blood plasma amino acid concentrations dropped dramatically after 3 hours in the group consuming whey.

iv) Although blood plasma levels dropped dramatically with Whey, the net increase in protein synthesis was boosted by 68%.

The reason for Casein's ability to sustain such a lengthy release of amino acids is because of its unique digestibility. It forms a gel in the stomach, slowing the transit time in the digestive system, and thus slows the digestion of the protein.

These findings demonstrate casein as the perfect protein source when a positive nitrogen balance is preferred for more than 3 hours. e.g when you are sleeping, or a prolonged period during the day. Whereas whey protein is seen as the preferred protein source for increasing protein synthesis. e.g between meals and after workouts.

IMPORTANT NOTE: Reflex Micellar Casein is not to be confused with skim milk powder, some confusion certainly exists in this area. The micellar casein offered by Reflex Nutrition is manufactured by ultra filtration of skim milk - this process removes excess lactose and fat. The resulting raw material is about 85% protein. On the other hand skim milk powder is only 36% protein and about 50% lactose.

Micellar Casein, like all Reflex products, is made in the U.K to the highest standards possible. Adhering to strict IS09001 procedures you are guaranteed a quality product every time.

Reflex Micellar Casein is available in the following sizes and flavours:



Flavours, Sizes & Dosage


909gm (2lb) Container
Chocolate / Strawberry / Vanilla.
Serving size : 45gm - 20 servings per container


Instuctions for use: Take 3 heaped measures (approx. 45gms) and mix with 450ml of water or skim milk.

Consume one serving before bedtime. You can also take a serving before a prolonged period of time(where more than 3 hours passes before food is eaten again).