Signature 100% Whey Protein Powder Signature

Signature 100% Whey Protein Powder

25g of Muscle-Building Whey Protein*
Blend of 3 Types of Whey for Ultimate Muscle Growth and Recovery*
8.8  out of 10  (689 Reviews)
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Product Overview

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Whey protein is the most important weapon in your muscle-building arsenal. It promotes muscle growth, counteracts muscle breakdown, and supports your workout recovery.*

Bonus: It’s also easy to digest and a source of powerful BCAAs.* Our Signature 100% Whey Protein combines three hard-hitting types of protein in one powerful blend. It’s perfect first thing in the morning, between meals, and especially after your workout. It’s so delicious, it’ll also slay that sweet tooth! Signature 100% Whey Protein tub


25g Whey Protein. 6g Hydrolysate. 13g Isolate. 6g Concentrate.


Great for low-carb diets, low in fat, and easily digested.*


Concentrate has a more balanced amount of proteins, carbs, and fats to fuel your workouts.*


This whey protein has been hydrolyzed, or broken down into strings of amino acids called peptides, for even faster absorption than standard whey!*


These enzymes help with the digestion of your protein.* In fact, they are clinically studied and shown to increase the uptake of amino acids into the blood by 20% compared to whey protein given alone.* Athlete

A signature is a promise. A symbol of your identity. Your mark on the world. In 1999, was founded on a single promise: Trust. It’s who we are and it’s in our blood. Our Signature line is built on the same promise. Every product is no-BS, transparent, filler-free, and formulated with effective doses of research-backed ingredients you can trust. We create the highest quality supplements, so you can focus on leaving a mark of your own.


Signature products are formulated with high quality ingredients at effective doses that we’re proud to share with you. We don’t hide anything in a “proprietary blend”, so you always know exactly what you’re putting into your body.


An effective dose is the amount of an ingredient that has been shown to deliver results. Some supplement brands add a sprinkle of an ingredient just so they can say it’s in the product. Signature supplements always include enough to get the job done.


Trendy, flash-in-the-pan ingredients come and go. But time-tested, gym-proven ingredients are what you need to help you achieve your fitness goals. That’s what you’ll find in Signature products because that’s what works.


Ratings & Reviews

Signature 100% Whey Protein Powder
Overall Rating
689 Ratings
Verified Buyer Rating
592 Ratings
Average Flavor Rating
8 Flavors
Top Rated Flavor
Chocolate Peanut Butter
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.
Aug 08, 2020
Verified Buyer
  • 10 Oatmeal Cookie
  • 8 Chocolate

Hands down the best protein powder I've ever used. Tastes great, mixes well, has a perfect macro ratio for me. I use it with almond or cashew milk for a low calorie, high protein snack or meal. I also use it in recipes to make healthy versions of my favorite foods like pancakes and no-bake brownies. The oatmeal cookie flavor is the best tasting protein I've ever had. The chocolate is great too, not as good as the oatmeal cookie, but as far as chocolate goes, it's up on top. This is my forever go-to protein!

Aug 07, 2020
  • 10 Chocolate

I love oatmeal cookies and this stuff tastes insanely good.

Aug 05, 2020
Verified Buyer
  • 10 Oatmeal Cookie

I love oatmeal cookies and this stuff tastes insanely good. It really helps with my sweet tooth. Impressive macros too

Aug 05, 2020
Verified Buyer
  • 10 Oatmeal Cookie
  • 7 Mocha Cappuccino
  • 10 Peanut Butter Cookie

I did not think it was possible but they did it. I have been using oatmeal cookie for the past few years but Peanut Butter Cookie is the new king!!! It tastes better than every peanut butter based protein I have tried and they all have many more calories! (160/200). PERFECT for protein French toast too. Really hope it becomes a 5 LB flavor

Aug 02, 2020
Verified Buyer
  • 10 Peanut Butter Cookie
  • 10 Chocolate Peanut Butter

The peanut butter cookie was amazing! It’s a great price for the quality. I make a shake every morning with collagen. I am already losing some fat around the waistline. With diet and exercise this is a great product. I chose this over the Muscle Tech Ripped because the cholesterol amount is lower. I do wish this was in the 5lb. Chocolate peanut butter is good too.

Jul 30, 2020
  • 10 Peanut Butter Cookie

peanut butter cookie is awesome please make in 5lbs container

Jul 24, 2020

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Jul 22, 2020
Verified Buyer
  • 1 Mocha Cappuccino

I’ve tried a lot of protein flavours. I got excited when I saw this because I love coffee and thought this could be delicious with milk. But I’ve never tasted something so awful in my life. Absolutely disgusting.

Jul 20, 2020
Verified Buyer
  • 10 Vanilla
Jul 18, 2020
Verified Buyer
  • 10 Oatmeal Cookie

I had high hopes based on the reviews and the oatmeal cookie whey protein exceeded them - I blend mine with milk and it's delicious! Super smooth, great flavor, and the price per serving is unbeatable. I think it would also be good mixed in with oats (of course).

Jul 07, 2020
Verified Buyer
  • 1 Vanilla

I really wanted this to be good.... I was so excited to find a high protein, affordable, and sugar free product. Yes this is all of those things but be warned!!! It is flavored with Cellulose Gum instead of sugar and in result, it tastes like a super sweet gum chemical drink! If I could give one star I would and I want my money back for false advertising!

Jul 06, 2020
  • 10 Oatmeal Cookie
Jul 06, 2020
Verified Buyer
  • 10 Oatmeal Cookie

Smells and tastes exactly like what you would think. It smells just like the oatmeal creme pies from Little Debbie! I mix it in with my morning oats and add extra cinnamon. It’s like a morning treat! I highly recommend especially for the price.

Jul 02, 2020
Verified Buyer

This is crazy good. I was not expecting that. It legit tastes like an Oatmeal cookie. Hint of brown sugar aftertaste just like the real thing. Reminds me of Quaker Oats Maple and Brown Sugar.

Jul 01, 2020
Verified Buyer
  • 6 Oatmeal Cookie
  • 7 Vanilla

a lot of protein powders are pretty sweet but this one is almost disgustingly sweet. I mixed it with water, milk, oatmeal, coconut milk, and almost every other type of thing to mix it with and the only thing that makes it palatable is a few tablespoons of unsweetened cocoa powder and maybe some fruits. it's not terrible but it's not what some of these other comments have made it out to be. If you do plan on buying it make sure you mix it with other stuff

2 Sizes
5 Lbs.
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5 Flavors
Oatmeal Cookie
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Was:  $49.99
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Price: $37.49  ($0.56 / Serving)
Flavor Rating: 9.0
Blend of 3 Types of Whey for Ultimate Muscle Growth and Recovery*

What's in Signature Signature 100% Whey Protein Powder

Serving Size 1 Scoop (34g)
Servings Per Container66
Amount Per serving % Daily Value *
Calories 130       
Total Fat 2 g 3%
Saturated Fat 1 g 5%
Trans Fat 0 g       
Cholesterol 50 mg 17%
Sodium 210 mg 9%
Total Carbohydrate 3 g 1%
Dietary Fiber 0 g 0%
Total Sugar 1 g       
Includes 0g Added Sugar 0%
Protein 25 g 50%
Vitamin D 0mcg 4 IU 0%
Calcium 130 mg 10%
Iron .3 mg 2%
Potassium 140 mg 2%
* The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2000 calories a day is used for general nutrition advice.
Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Whey Protein Hydrolysate), Natural and Artificial Flavors, Salt, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageen), Sunflower Lecithin, Sucralose, Acesulfame Potassium, Ground Cinnamon, Lactase, Prohydrolase® (Proteases from Bacillus and Pineapple), Dipotassium Phosphate
Contains Milk

Directions For Signature 100% Whey Protein Powder: Mix one scoop (34 grams) with 6 ounces of water, milk, fruit juice or your favorite beverage. Ideally take one serving immediately following your workout. To modify the consistency of your protein, increase or decrease the liquid level to your liking.

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

* 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.