Signature 100% Whey Isolate Signature

Signature 100% Whey Isolate

Hydrolyzed Whey Protein Isolate
Digests Quickly to Aid Recovery and Build Muscle*
8.7  out of 10  (31 Reviews)
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Product Overview

Proudly supports first responders & nurses with and Verify Here Signature 100% Whey Protein Isolate

Whey protein isolate is protein at its best. It has been filtered to remove the majority of the lactose, fat and carbs, making it higher in protein, leaner, and faster digesting than standard whey protein. Its quick release of amino acids is ideal for supporting post-workout muscle growth and recovery. Signature Isolate is delicious and fits any clean-eating plan with just 1 gram of sugar, minimal lactose, and only 1 gram of fat. Signature 100% Whey Protein Isolate

WHEY BLEND BREAKDOWN Signature Whey Blend Breakdown Chart


Over half of the protein in Signature 100% Whey Protein Isolate is hydrolyzed. The peptides from hydrolyzed proteins are much easier for your body to digest than standard long-chain proteins or free amino acids. That means better absorption of these muscle-building aminos.

But amino acids that come in the form of a peptide — in other words, already broken down through the hydrolyzation process — bypass all that and can be absorbed intact. Once they’re absorbed, the body breaks them down further and releases a flood of amino acids. Research shows that hydrolyzed proteins are absorbed more efficiently than straight amino acids. In fact, scientists estimate that two-thirds of amino acid absorption occurs in the form of small peptides, with only one-third absorbed from free amino acids.


Why isn’t all the protein in this product hydrolyzed? It all came down to taste: Peptides are bitter! We pushed the envelope to provide as hydrolyzed whey protein isolate as possible, but the bottom line is that protein won’t work if you can’t bear to drink it.

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 Isolate
Overall Rating
31 Ratings
Verified Buyer Rating
24 Ratings
Average Flavor Rating
2 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.
Mar 22, 2021
  • 8 Vanilla
  • 6 Chocolate

Good Product

Jan 12, 2021
  • 10 Chocolate

Most say this is the best tasting protein powder I have ever tried!! Great taste will definitely be buying way more!

Jul 27, 2020
Verified Buyer
  • 1 Vanilla

They sold me one that expired 2 months later, I didn't even open it 🤦🏽‍♂️.

Jun 27, 2020
Verified Buyer
  • 7 Chocolate

It mixes well and isn’t chalky, but the flavor is bland and watery and I don’t feel like it keeps me as satiated as other proteins that I’ve tried in the past. I don’t think I’ll purchase again.

Jun 21, 2020
  • 10 Chocolate

Amazing flavor, mixes very easily, and tastes smooth. I would recommend to everyone! I had chocolate

Jun 11, 2020
Verified Buyer
  • 10 Vanilla

Awesome stuff! Costco stopped selling Optimum Vanilla Isolate powder so I gave this a try. Decent pricing and awesome flavor! It is VERY sweet so I use half a scoop and then some collagen to increase the protein of my shakes.

Mar 10, 2020
  • 7 Vanilla

Good quality for the price

Jan 07, 2020
Verified Buyer
  • 6 Vanilla

Flavor has a noticeably artificial taste with just water to mix.

Nov 29, 2019

I decide to try this protein, mainly because the price and also because I thought that the brand will guarantee the product quality. Nevertheless, my experience has been negative. The protein is not easy to digest and after consuming it, I don´t feel the punch I feel with other whey isolates. In my case, next time I will spend some more with a different brand.

Nov 15, 2019
Verified Buyer
  • 10 Chocolate
  • 10 Vanilla

I'm lactose intolerant and I'm happy to report that I have zero trouble with this product. I like it best when mixed with unsweetened almond milk. I make my shake in the blender, but I'm on occasion just stirred it vigorously with a spoon. It's smooth and tasty. If I had to choose, I'd say I prefer the chocolate a tiny bit more over the vanilla, but I really like them both and switch back and forth between the two. Good price, great taste, easy to digest—to me, this is the best shake on the market.

Oct 16, 2019
Verified Buyer
  • 10 Vanilla

So far this is the best why protein isolate I've used. It does not upset me mixes very well taste great. I have no issues with it awesome job

Sep 30, 2019
Verified Buyer
  • 10 Vanilla
Sep 28, 2019
Verified Buyer
  • 5 Chocolate

Don't think it's really lactose-free as purported....disappointing

Sep 02, 2019
Verified Buyer
  • 10 Vanilla

Probably one of the best protein i have ever had, it mixes easily taste good however I don’t really care about taste but i have very sensitive stomach and this protein is the only one not upsetting my stomach

Jul 26, 2019
Verified Buyer
  • 8 Chocolate
  • 8 Vanilla

Mixes completely and easily. Good taste. Easily digested for people with sensitive stomachs.

3 Sizes
1.6 Lbs.
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2 Flavors
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Was:  $27.99
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Price: $16.79  ($0.73 / Serving)
Flavor Rating: 9.1


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Digests Quickly to Aid Recovery and Build Muscle*

What's in Signature Signature 100% Whey Isolate

Serving Size: 1 scoop (32g)
Servings Per Container: About 23
Amount Per Serving
Calories 120       
% Daily Value *
Total Fat 1 g 1%
Saturated Fat 0 g 0%
Trans Fat 0 g       
Cholesterol 15 mg 5%
Sodium 200 mg 9%
Total Carbohydrate 3 g 1%
Dietary Fiber 1 g 4%
Total Sugars 1 g       
Includes 0g Added Sugars 0%
Protein 25 g 50%
Vitamin D 0 mcg 0%
Calcium 85 mg 6%
Iron 1 mg 6%
Potassium 153 mg 4%
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
Hydrolyzed Whey Protein Isolate, Whey Protein Isolate, Cocoa processed with Alkali, Salt, Natural and Artificial Flavor, Sunflower Lecithin, Sucralose, Acesulfame Potassium.
Contains Milk.

Directions For Signature 100% Whey Isolate: Add one scoop to 6 ounces of cold water or milk and mix thoroughly. Our isolate is made with instantized proteins that mix easily - no clumps or grit. Enjoy pre- or post-workout, or anytime you need a delicious protein boost.

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.