There are many studies comparing the muscle building effects of casein and whey, with casein generally appearing to be the top effect. There are several reasons for this, but the main point is: Casein is generally a better muscle, a better power and a better fat burner than whey. (See Casein vs. Whey: The Real Story.)
Most low-cost casein protein powders consist partially or wholly of sodium or calcium caseinate, which the body absorbs quickly like a hare. As such, they cause a rapid increase in insulin. They also do not provide sustained levels of amino acids.
They are not complete trash but they are somehow anemic when it comes to doing the basic work of protein powders that build muscle.
If you want to use a casein based, commonly used protein powder ̵
It is really difficult to make protein powder from micellar casein – hence their relative rarity and higher price. You have to process it carefully and leave the milk proteins largely undisturbed. Producing micellar casein is almost like catching snowflakes in Maine and shipping them to California with a truck driver stopping in front of a bar in the Mojave Desert to knock down some tequilas The only protein that has been proven in laboratory studies is actually anti-catabolic (Boire, 1997). This means that it not only increases protein synthesis but also prevents muscle breakdown during and after intense exercise. Metabolic Drive® Protein contains plenty of micellar casein.
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