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GNC Pro Performance 100% Casein Protein, Chocolate 2 lb (909 g)

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selected flavor: Chocolate
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Powdered Protein Mix
Naturally and Artificially Flavored

  • 25 Grams of Slow-Acting Protein for Higher Sustained BCAA Uptake
  • Features Micellar Casein and Calcium Caseinate
  • Natural Source of Amino Acids

Protein serves as a source of amino acids. The body needs amino acids to build the various proteins used in the growth, repair and maintenance of body tissues such as skin, bones and muscles.

Why Casein?
Casein is a slow digesting protein derived from milk. When compared to other sources of protein such as soy and whey, casein increases blood amino acids at a much slower and steadier rate. This delayed digestion and absorption of amino acids may be beneficial between meals or in the evening to provide a steadier supply of muscle fuel, crucial to maintaining an anti-catabolic state and significantly decrease protein breakdown.

This chart (displayed on container) compares the branched chain amino acid (BCAA) absorption after consuming casein and whey protein. When compared to whey, casein concentration was significantly lower after one hour, forty minutes, but increased after five hours.

+In a randomized, double-blind controlled study of sixteen healthy adults, subjects consumed either whey protein or casein containing equal amounts of leucine. While plasma branched chain amino acid (BCAA) levels were highest at 100 minutes post supplementation in subjects who consumed whey protein, after 300 minutes (5 hours) BCAA levels were higher in subjects who consumed casein compared to those who took whey protein.

Typical Amino Acid Profile Per Serving:
Alanine - 676 mg
Arginine - 885 mg
Aspartate - 1622 mg
Cystine 83 mg
Glutamate - 5050 mg
Glycine - 525 mg
Histidine - 704 mg
Isoleucine* - 1339 mg
Leucine* - 2173 mg
Lysine - 1858 mg
Methionine - 653 mg
Phenylalanine - 1168 mg
Proline - 2469 mg
Serine - 1422 mg
Threonine - 1066 mg
Tryptophan - 296 mg
Tyrosine - 1367 mg
Valine* - 1645 mg
Total - 25000 mg

For More Information: 1-888-462-2548

*Indicates Branched Chain Amino Acid (BCAA)


Contains: Milk and Soybeans.

Use this product as a food supplement only. Do not use for weight reduction. Significant product settling may occur.

General Nutrition Corporation

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