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GNC Pro Performance 100% Casein Protein, Chocolate Peanut Butter 2 lbs (909 g)

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selected flavor: Chocolate Peanut Butter

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Sustained Release to Fuel Positive Nitrogen Balance

25g Protein | 160 Calories | 2g Sugar | 10g Carbs

  • Tasty Chocolate Peanut Butter - Natural & Artificial Flavors
  • 25g of Slow-Release Protein Delivers Steady Amino Release*
  • Mixes Instantly with Delicious, Smooth Taste
  • Features Quality Caseinate Micro-Fractions
  • Provides 21 Servings

Casein protein is a slow-releasing protein with great muscle fueling potential.  It features properties that slowly release amino acids into the bloodstream to feed muscles.  It naturally provides key amino acids, such as glutamine and branched chain amino acids, so casein protein is excellent between meals and before bed for sustained amino acid delivery.  As an ideal nitrogen-fueling supplement, this casein formula delivers an effective formula to help fuel your muscles’ precious supply of nitrogen, since your muscles can only grow when your body is in positive nitrogen balance.  GNC Pro Performance® 100% Casein Protein provides support for powerful anti-catabolic signals for efficient muscle fuel.

The specifically treated and delicate micro-fraction forms of micellar and calcium casein protein found in GNC Pro Performance 100% Casein Protein release their glutamine-rich amino acids very slowly to the muscles.  The result is an unrivaled anti-catabolic effect.  And it’s this anti-catabolic effect on the muscles that ultimately leads to results!  Quite simply — this formula works.

The GNC Pro Performance 100% Casein Protein Quality Advantage
GNC researchers created a superior casein protein formula that delivers results and tastes great.  Each serving mixes up instantly with a blender, shaker cup, or spoon for a creamy, smooth shake — it’s that easy!  Taste-tests prove GNC Pro Performance 100% Casein Protein is our best testing casein protein formula ever!

Typical Naturally Occurring Amino Acids per Serving:
Alanine - 676 mg
Arginine - 885 mg
Aspartate - 1622 mg
Cystine - 83 mg
Glutamine - 5050 mg
Glycine - 524 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

Nutrition Facts:
Calories per gram:  Fat 9 , Carbohydrate 4, Protein 4

Notice:  Significant product settling may occur.


*In a randomized, double-blind controlled study of 16 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.

†Indicates Branched Chain Amino Acids (BCAA).


Contains:  Milk and soybeans.  Notice:  Use this product as a food supplement only.  Do not use for weight reduction.

©General Nutrition Corporation

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