COR-Performance Whey

COR-Performance Whey , 907 Grams Peanut Butter Marshmallow

Blended Whey Protein to Support Muscle Growth
Great Tasting Protein With Added Digestive Enzymes
9.0  out of 10  (1,915 Reviews)
1 Size
907 Grams
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1 Flavor
Peanut Butter Marshmallow
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Price: £32.99  (£1.18 / Serving)
On Backorder
Flavor Rating: 8.6
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Product Overview


Fast acting protein powder to help maintain and build muscle


Choose from a variety of dessert-inspired flavors

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  • Packed with protein to help maintain and build muscle
  • Dessert inspired flavors
  • Great as a snack, ingredient in recipes or to supplement your daily protein intake

COR-Performance Whey is an optimal source of protein when you’re looking to maintain muscle, build muscle, and indulge your sweet tooth--guilt-free.

Every scoop of COR-Performance Whey is packed with a 25g blend of whey protein concentrate and isolate, as well as digestive enzymes so that you can satisfy your protein needs any time of the day.


You need carbs and you need fat, but do you need them in your protein supplement? When you want the benefits of protein with minimal carbs and fat, COR-Performance Whey is a great option.


COR-Performance Whey sets the bar high for protein. Cellucor’s team of flavor experts is passionate about delivering the best-tasting protein money can buy. With a full line of dessert-inspired flavors, you’ll have no problem satisfying your taste buds.

Don’t take our word for it… Online fitness hub and retailer,, named COR-Performance Whey the “Breakout Supplement of the Year” in 2013 for its premium formula and outstanding flavors.


COR-Performance Whey is as versatile as it is delicious, making it the perfect ingredient for protein packed recipes. From pancakes and waffles, to puddings and ice cream, COR-Performance Whey lets you get creative with how you devour your protein!

Ratings & Reviews

Overall Rating
1,915 Ratings
Verified Buyer Rating
1,373 Ratings
Average Flavor Rating
20 Flavors
Top Rated Flavor
By clicking the button above, you agree to entering the Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
Feb 20, 2019
Verified Buyer
  • 10 Peanut Butter Marshmallow

One of the best tasting protein products out. Also great macro break down.

Oct 09, 2018
Verified Buyer
  • 10 Cookies N' Cream
May 30, 2018
Verified Buyer
  • 10 Chocolate Chip Cookie Dough
  • 10 Cinnamon Swirl
  • 10 Cookies N' Cream
  • 10 Molten Chocolate
  • 10 Peanut Butter Marshmallow
  • 10 Strawberry Milkshake
  • 10 Whipped Vanilla

Whey Flavor: 10/10 Whey Original- Strawberry Milkshake, Cookies n Cream, Chocolate Chip Cookie Dough, Peanut Butter and Marshmellow, Cinnamon Swirl, Molten Chocolate, Whipped Vanilla Sport- Chocolate, Vanilla Extra: I have extensive research on Cellucors Whey and Protein products from the original up until todays form. Whey flavor testing was superb!!! I use a serving scoop in about 12oz of milk. I am a huge fan of Cellucors Whey line and this doesn't fail me too the least. Whey mixes well with other products from Cellucor but be careful to read the ingredients because too much isn't good. Mixability: 10/10 - No issues at all, no extra flakes give it a good shake or vortex spin and you're good to go. Overall: First off thank you Cellucor for making another excellent product, Whey products work tremendously. Not even that the flavor is a great starting point as well as it tastes amazing. But we are all here for the gainz and getting the boost necessary and routines in, I give this product a thumbs up!!!

May 29, 2018
Verified Buyer
  • 7 Cinnamon Swirl
  • 8 Molten Chocolate
  • 4 Peanut Butter Marshmallow
  • 1 Whipped Vanilla

Overall this brand is ok. I have tried 4 of their flavors. The cinnamon swirl and chocolate were my first order and both pretty good. Mixes OK with water, sometimes get clogging at the top of my bottle. The next order was Whipped Vanilla and Peanut Butter Marshmallow. The Whipped Vanilla was terrible. My wife and I couldn't take it. It was a very chemical/artificial tasting vanilla frosting. The peanut butter marshmallow was OK but didn't taste like anything really. The marcos are good however.

May 26, 2018
Verified Buyer
  • 8 Molten Chocolate
  • 10 Peanut Butter Marshmallow
  • 9 Whipped Vanilla

Fantastic protein powder. I loved the flavor of all of them, especially the peanut butter marshmallow. The vanilla can get boring over time. And the molten chocolate would sometimes clump in my shaker bottle (with the wire ball) if you didn't do it thoroughly enough. But otherwise they dissolved nicely and are really tasty.

Apr 11, 2018
  • 10 Peanut Butter Marshmallow

I love it. Tastes great. And mixes amazing with skim milk..and with my added creatine ive been gaining 3-4 pounds every 14 days. !

Mar 26, 2018
Verified Buyer
  • 5 Peanut Butter Marshmallow

Tastes horrible and too thin of a consistency.

Mar 16, 2018
  • 8 Molten Chocolate
  • 9 Strawberry Milkshake

Great tasting! Mixes well no clumps! No crazy after taste!

Feb 22, 2018
Verified Buyer
  • 9 Cinnamon Swirl
  • 10 Molten Chocolate
  • 10 Whipped Vanilla

This protein is great! It does not clump up, mixes well, and tastes amazing! I like to mix mine with coffee and it’s absolutely delicious!

Jan 26, 2018
Verified Buyer
  • 8 Molten Chocolate

Great product for recovery after working out. Chocolate Peanut Butter is amazing.

Jan 24, 2018
Verified Buyer
  • 7 Cinnamon Swirl

Cellucor is my favorite protein powder I've ever gotten. This is my second round with cinnamon swirl, it is nice that Cellucor has expanded on flavours, rather than the basic chocolate and vanilla, which get old fast. The cinnamon swirl is good for the first bit, but does get old by the end. The chocolate peanut butter has to be my favourite flavour of all protein powders I've had. Very good balance of high protein and low fats/carbs. Highly recommend this brand of protein powders!

Jan 03, 2018
Verified Buyer
  • 8 Peanut Butter Marshmallow

This flavor is pretty good but I prefer the chocolate PB. I usually go with Jym products but wanted to try something new. So far, I am not disappointed.

Dec 19, 2017
Verified Buyer
  • 6 Cinnamon Swirl

Cinnamon Swirl tastes fine; not as bad as I expected it to be but I'm not a fan.

Dec 18, 2017
Verified Buyer
  • 9 Molten Chocolate

WOW! I have been in to fitness for roughly 15 years now. I have tried many different kinds of protein mixes and supplements. This one is like no other. GAS! I eat a very clean diet and have for a long time, and this is my first time trying this protein. I usually buy JYM or Dymatize. Nothing else significant has changed in my diet. Since taking this protein I have gas, terrible gas. I'm a guy, so a gas has never bothered me. But this gas smells like an animal died inside me mixed with baby poop. It's not just a **** here and there, sometimes feel like I get airborne from the amount of gas these ***** produce. It's insane! Then you are hit with the smell. DEAR GOD, it's terrible. I feel bloated from the amount of gas built up inside my stomach. If my wife doesn't kill me before this 5lb tub is finished, I can guarantee you I won't be order any more of this deadly natural gas producing protein. You have been warned!

Dec 16, 2017
Verified Buyer
  • 5 Chocolate Chip Cookie Dough
  • 9 Cinnamon Swirl

I absolutely love the cinnamon swirl and chocolate peanut butter! But the chocolate chip cookie dough leaves an unpleasant aftertaste.

907 Grams
907 Grams
28 Servings | £1.18 Per Serving

What's in Cellucor COR-Performance Whey

Serving Size: 2 Level Scoops (32 g)
Servings Per Container:28
Amount Per Serving % Daily Value *
Calories 130       
Calories From Fat 15       
Total Fat 1.5 g 2%
Saturated Fat .5 g 3%
Trans Fat 0 g 0%
Cholesterol 35 mg 12%
Sodium 140 mg 6%
Total Carbohydrate 4 g 1%
Dietary Fiber 0 g 0%
Sugars 2 g       
Protein 24 g       
Vitamin A 0%
Vitamin C 2%
Calcium 10%
Iron 2%
** Percent Daily Values are based on a 2,000 calorie diet Your daily values may be higher or lower depending on your calorie needs.
Other Ingredients:
COR-Performance™ Whey Protein Matrix (Whey Protein Isolate, Whey Protein Concentrate), Natural & Artificial Flavors, Cocoa Powder (Processed With Alkali), Cellulose Gum, Xanthan Gum, Salt, Protease, Acesulfame Potassium (Ace-K), Sucralose, Protease A-S, Lactase.
Contains Milk, Soy. GLUTEN-FREE. This product is manufactured on the same equipment that processes milk, egg, soy, wheat, peanut & tree nuts.

Directions For COR-Performance Whey: Take one to two scoops of Cellucor COR-Performance Whey Protein with 6-12 oz (180-360 ml) of cold water or any beverage of your choice. Use approximately 5-6 oz. (150-180 ml) of liquid per one scoop of powder.

Warnings: This product is only intended to be consumed by healthy adults 18 years of age or older. Do not use this product if you are pregnant or nursing. Discontinue use and immediately contact your health care professional if you experience any adverse reaction to this product. Food supplements should not be used as a substitute for a varied diet. Follow label instructions and do not exceed recommendations for Suggested Use. Do not use if safety seal is broken or missing. KEEP OUT OF REACH OF CHILDREN. Store in a cool, dry place.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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