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Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Cookies and Cream, 4.60 lbs (2.09 kg)

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Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Cookies and Cream, 4.60 lbs (2.09 kg)

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Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Cookies and Cream, 4.60 lbs (2.09 kg)

In Stock
Cookies and Cream
Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Milk Chocolate, 4.60 lbs (2.09 kg)
Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Vanilla, 4.60 lbs (2.09 kg)
Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Strawberry, 4.60 lbs (2.09 kg)
Muscletech, Performance Series, Phase8, Multi-Phase 8-Hour Protein, Cookies and Cream, 4.60 lbs (2.09 kg)
  • Expiration Date: April 2020
  • Shipping Weight:
    6.21 lbs
    Switch to Metric units
  • Product Code: MSC-70355
  • UPC Code: 631656703559
  • Package Quantity: 4.60 lbs
  • Dimensions:
    7.5 x 7.5 x 10.7 in, 5.25 lbs
    Switch to Metric units

Product Rank:

Frequently Purchased Together
Product Overview


  • All New
  • PerformanceSeries
  • New
  • America's #1 Selling Bodybuilding Supplement Brand‡
  • Provides High Biological Value and Sustained Release Protein
  • 8 Hours of Amino Acid Delivery¹
  • Increases Muscle Size and Strength
  • 26 g Protein
  • 7 Protein Sources
  • 5 g Glutamine
  • 5.6 g BCAAs
  • Natural and Artificial Flavors
  • Dietary Supplement
  • Made in the USA From Domestic & International Ingredients
  • #1 Most Award Winning Sports Nutrition Brand
  • #1 Most Clinical Studies in Science
  • American Masters of Taste Gold Medal - Superior Taste
  • 20 Years of Excellence
  • Guaranteed Banned Substance Free
  • cGMP Manufactured - Manufactured according to cGMP Standards, as is Required for All Dietary Supplements
The PHASE8 Advantage
Ingredient PHASE8 Competitor #1 Competitor #2
Protein 26 g 22 g 21 g
Protein Sources All high quality milk-derived proteins Milk-derived proteins and egg protein Milk-derived proteins
Carbs 8 g up to 15 g 9 g
Fat 1.5 g Up to 6 g 2.5 g

If you're serious about performance and results, you need the All-New MuscleTech Performance Series!

  • No Proprietary Blends
  • No Fillers
  • No Underdosed Key Ingredients
  • No Hype
  • No Banned Substances
  • No Exceptions

Just the Most Powerful Formulas Available

The Complete Sustained-Release 8-Hour Protein Formula

PHASE8 is designed to do one thing - feed your muscles the highest quality blend of protein available. Each serving of PHASE8 delivers a 26-gram blend of proteins taken from multiple sources with variable digestion rates. The multiple release rates of amino acids feed your muscles for 8 hours - that's a prolonged delivery of key musclebuilding blocks, making PHASE8 the perfect protein for any time of the day or night. What's more, the 26-gram blend of proteins in each serving of PHASE8 delivers an incredible 5.6 grams of naturally occurring BCAAs and 5 grams of naturally occurring glutamine.

8-Hour Sustained-Release Protein Absorption

The main protein component in PHASE8 has the unique ability to release amino acids in your bloodstream for 8 hours after taking it.¹ Because of these sustained-release properties it's a highly anabolic and anti-catabolic protein that helps create a musclebuilding environment for longer periods of time.

7 High-Quality Protein Sources

Overall, PHASE8 contains protein sources designed to digest at different rates - putting your body in the perfect state for repair and recovery

Biological Value of Protein Sources

The PHASE8 Advantage
Protein BV PHASE8
97% Whey Protein Isolate 104
Hydrolyzed Whey Protein Isolate 104
Whey Protein Isolate 104
Whey Protein Concentrate 104
Milk Protein Isolate 91
Calcium Caseinate 77
Micellar Casein 77
Soy Protein 74 X
Brown Rice 70 X

Other multi-phase protein formulas contain protein derived from plant sources, such as brown rice or even soy, and are often loaded with fat and carbs. PHASE8 contains high quality milk-derived protein and has half the fat and carbs of the leading competitor.

PHASE8 Multi-Phase Protein Delivery Digestion Rates

Protein Blend in PHASE8 Super Fast |
8 HRS!
Super Slow

Best-In-Class Taste

PHASE8 was flavored by one of the world's top flavoring houses by protein flavoring experts in order to taste better than any other protein on the market.

Take Anytime: Morning, Pre- and Post-Workout and at Night

PHASE8 contains a unique blend of proteins that allows you to take it whenever you need it. The multi-phase protein delivery supplies the needed quick release of amino acids for post-workout amino acid delivery supplies the needed quick release of amino acids for post-workout amino acid delivery, the medium release protein phase for between meals and the slow-digesting protein phase for night time use - making PHASE8 the perfect choice for any situation.

‡ MuscleTech is America's #1 Selling Bodybuilding Supplement Brand based on cumulative wholesale dollar sales 2001 to present.

¹. Lacroix et al., 2006. The American Journal of Clinical Nutrition. 84:1070-9.

Suggested Use

Mix 1 serving (1 scoop) with 8 oz of cold water or skim milk in a glass or shaker cup. For best results, mix 2 servings (2 scoops) with 16 oz. of water or skim milk. Use between major meals and after exercise. Drink 8 to 10 glasses of water daily. For maximum results, consume 4 scoops daily for a minimum of 6 weeks.

Other Ingredients

Protein Blend [whey protein concentrate, milk protein isolate (supplying micellar casein and whey), micellar casein, calcium caseinate, whey protein isolate, 97% whey protein isolate, hydrolyzed whey protein isolate], maltodextrin, natural and artificial flavors, cookie crumble pieces [enriched flour (wheat flour, niacin, iron, thiamin mononitrate, riboflavin, folic acid), sugar, vegetable oil (soybean and palm kernel oil, TBHQ (preservative)), cocoa powder (processed with alkali), fructose corn syrup, degerminated yellow corn flour, chocolate, salt, dextrose, baking soda, whey, soy lecithin], calcium carbonate, salt, guar gum, acesulfame-potassium, silicon dioxide, sucralose, soy or sunflower lecithin. Contains wheat, milk, and soy ingredients. Processed in a facility that processes wheat, egg, tree nut, fish and shellfish ingredients.

This product contains 5.6 g of branched chain amino acids that occur naturally in the protein provided in this product. There are no added amino acids contained within this formula that are counted towards the total amount of protein listed on the label.


Do not use if packaging has been tampered with. Store in a cool, dry place (60º to 80ºF).

Do not use if pregnant or nursing. Consult a medical doctor if you have a medical condition or before starting any diet or exercise program.

Keep out of reach of children.

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

Supplement Facts
Serving Size: 1 Scoop (42 g)
Servings Per Container: Approx. 50
  Amount Per Serving % Daily Value
Calories 150  
Calories from Fat 15  
Total Fat 1.5 g 2%*
Saturated Fat 1 g 5%*
Cholesterol 50 mg 17%
Total Carbohydrate 8 g 3%*
Sugars 2 g
Protein 26 g 52%*
Calcium 490 mg 49%
Sodium 160 mg 7%
Digestive Enzyme Matrix 100 mg
Papain 50 mg
Amylase 50 mg
*Percent Daily Values are based on a 2,000 calorie diet.
†Daily Value not established.
iHerb Customer Reviews


Posted by iHerb Customer on March 12 2018 | Verified Purchase

I have tried almost every reputable protein powder on the market and Phase8 actually gives me the best results in muscle building.

Thanks for your feedback!

Great product

Posted by iHerb Customer on February 21 2018 | Verified Purchase

Thank you for the fast shipping and great product.

Thanks for your feedback!


Posted by iHerb Customer on February 1 2018 | Verified Purchase

i just love this

Thanks for your feedback!


Posted by iHerb Customer on January 22 2018 | Verified Purchase

Nice taste

Thanks for your feedback!

So far so good!

Posted by iHerb Customer on January 9 2018 | Verified Purchase

This is the first time I bought Phase8. I've been using this for 2 weeks and really like it so far. I usually get the chocolate flavor in protein powder, but decided to get the cookies and cream this time. It's a bit sweeter than I'm used to but nothing you can't get used to. It's more of a sweet vanilla with chocolate flakes that act as the cookies.

Thanks for your feedback!