🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • Limited research evidence available for ingredients
B Label Compliance Grade

Product Label

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Label Data

21 Gram(s) Serving Size
21 Servings
Other Combinations Product Type
0% Evidence Coverage

Supplement Facts — Evidence Check

Calories
160 {Calories}
Total Fat
1.5 Gram(s) (2% DV)
Cholesterol
10 mg (3% DV)
Sodium
260 mg (11% DV)
Total Carbohydrates
11 Gram(s) (4% DV)
Protein
25 Gram(s)
Vitamin A
Calcium
(50% DV)
Vitamin C
Iron
(8% DV)

Other Ingredients

Protein Blend Polydextrose Cocoa Natural and Artificial flavors Sunflower Oil powder Gum Blend Lecithin Salt Potassium Chloride Acesulfame Potassium Sucralose

Label Claims — Verification

Nutrient
All Other
All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

DIRECTIONS: Add one level scoop (42g) to 10 fl. oz. of cold water, milk or our favorite beverage and blend well. GNC Pro Performance(R) 100% Casein Protein can be taken first thing in the morning, in between meals and before bed. Follow the recommended dosage chart below for best results on both training and non-training days.

{Chart} Activity Daily Dose Protein (g) Benefits No Training/Off Day 1/2 - 1 scoop 12.5 - 25 Sustained release of muscle fuel Cardio Training 1 scoop 25 Replenishes Nitrogen for muscle protein synthesis Resistance Training 1 - 2 scoops 25 - 50 Extended supply of anabolic building blocks Cardio & Resistance 2 scoops 50 Fuels metabolism & supports recovery

STACK WITH PRO PERFORMANCE(R): RapidDrive(R) Arginine 5000(TM), 100% Whey Isolate and Creatine Monohydrate 5000(TM).

⚠️ Warnings & Precautions

CONTAINS: Milk and Soybeans.

NOTICE: Use this product as a food supplement only. Do not use for weight reduction.

🧪 Formulation Notes

The specially treated and delicate micro-fraction forms of micellar and calcium casein protein found in GNC Pro Performance(R) 100% Casein Protein release their glutamine-rich amino acids very slowly to the muscles.

25g of Slow-Release Protein Delivers Steady Amino Release

Features Quality Caseinate Micro-Fractions

25G PROTEIN

NATURAL AND ARTIFICIAL FLAVORS

25G PROTEIN - 160 CALORIES - 1G SUGAR - 11G CARBS

CONTAINS: Milk and Soybeans.

Additional Information

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' previous supply of nitrogen, since your muscles can only grow when your body is in positive nitrogen balance.

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!

This chart 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. {Chart} Plasma Amino Acids CASEIN VS. WHEY PROTEIN ABSORPTION CASEIN WHEY 5 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.

SUSTAINED RELEASE TO FUEL POSITIVE NITROGEN BALANCE

Mixes Instantly with Delicious, Smooth Taste

21 SERVINGS

Daily Recovery

CODE 351178 ANG

Significant product settling may occur.

TYPICAL NATURALLY OCCURRING AMINO ACIDS PER SERVING: Alanine 676 mg Arginine 885 mg Aspartic Acid 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 Indicates Branched Chain Amino Acid (BCAA).

Calories: 2000 2500 Total Fat Less than 65g 80g Sat. Fat Less than 20g 25g Cholesterol Less than 300mg 300mg Sodium Less than 2400mg 2400mg Potassium 3500mg 3500mg Total Carbohydrate 300g 375g Dietary Fiber 25g 30g Calories per gram: Fat 9 - Carbohydrate 4 - Protein 4

Store in a cool, dry place.

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Product Details

UPC / SKU 0 48107 09047 0
DSLD Entry Date 2015-02-25
Product Type Other Combinations
Form Powder
DSLD ID 42277
Data Updated 2026-04-11

Research Evidence

337 Research Sources
54 Avg Quality Score
161 Meta Analysis
68 Systematic Review
51 Rct
48 Clinical Trial
2 Other
2 Regulatory Source
1 Narrative Review
1 Cochrane Review
1 Guideline
1 Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024
View all evidence for Vitamin A →

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