Signature Mass Gainer Signature

Signature Mass Gainer

50g of Mass-Building Protein*
Protein, Calories, and Carbs to Put On Serious Size*
8.1  out of 10  (22 Reviews)
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Product Overview

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Signature Mass Gainer is a simple — and clean — way to go from skinny to stacked. It’s fully stocked with 810 calories, 50 grams of muscle-building protein, and 133 grams of carbohydrates. Probiotics help your body utilize the protein to its fullest. So, if you can’t seem to get enough mass-making nutrition in your day, skip the drive-thru and have a rich, satisfying shake.* Mass Gainer


We've put together a killer blend of high-quality protein sources to provide key muscle-building amino acids. The majority of the protein comes from clean, fast-digesting whey protein isolate. Milk protein concentrate and whey protein concentrate boast high bioavailability and supreme amino acid profiles. Casein rounds out the dairy proteins, providing a slow release of amino acids that supports muscles for hours.


Carbohydrates are key for a mass-gaining diet. They provide your muscles and liver with the fuel you need to lift big and train hard. Maltodextrin provides fast-digesting carbohydrates while ModCarb™ and Cluster Dextrin™ provide slower-releasing carbs that have less of an impact on blood glucose levels.*


Fat is not the enemy! It’s a valuable tool for clean bulking. Our bodies need some fat to produce hormones, build cell walls, absorb fat-soluble vitamins, construct neurons, and carry out many other important functions.


The probiotics in our Signature Mass Gainer have been developed specifically for use in powder supplements. Many other brands use standard probiotics and cannot guarantee that their probiotic bacteria are even viable. These specialized probiotics have also been proven in human clinical studies to improve digestive health and the uptake of protein. When you’re on a mass-gaining diet, a little digestive health support goes a long way. And, of course, protein absorption is crucial to making lean muscle gains.*

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 Mass Gainer
Overall Rating
22 Ratings
Verified Buyer Rating
20 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.
Oct 10, 2020
Verified Buyer
  • 10 Vanilla

So I’ve been using this mass gainer for about 5 weeks. I have gone up from a solid 209 to 216. I like it, it is working as it should for my bulking phase. It tastes good too! Not chalky like other brands I’ve had. I would definitely recommend this product for either a beginner or a veteran lifter looking to bulk.

Oct 06, 2020
Verified Buyer
  • 2 Vanilla

Garbage product. Stick all the way in your food pipe and very difficult to swallow even half of the recommended quantity.

Sep 19, 2020
Verified Buyer
  • 3 Vanilla

Normally I do not write product reviews, even for items I have disliked. I found this item to be an exception. The Bodybuilding signature line is a solid line and I have had good experiences with their products, especially their creatine and citrulline. Their mass gainer was a miss with me. The calorie count was solid, however I noticed that the product had a habit of clumping up in the bottom of the shaker cup or floating to the top in a giant powdery mass. The powder did not taste particularly well when mixed with milk; however when mixed with orange juice this product tasted like a creamsicle. With all this being said, I would still use products from the signature line.

Jul 25, 2020
Verified Buyer

The benefits this gainer provides is amazing. Wish it tasted a little better. Shake it up and chug it is the best way.

Sep 18, 2019
Verified Buyer

Chocolate tastes great I prefer it with less water it's like a milkshake , good macros in the mass gainer , great ingredients good product 😁💪🏼

Aug 25, 2019
Verified Buyer
  • 9 Vanilla

The protein actually tastes pretty good. Although you have to have a gigantic shaker to be able to fit a full serving inside. A full serving is 2 scoops and one scoop is huge. It's like a large laundry soap scoop. I've been only doing one scoop because I can't get enough water in my large shaker at the gym to make it a drink. I've also started using a one cup measuring cup that is round because the scoop they give is not shaped good for pouring into a container.

Jun 30, 2019
Verified Buyer

This is a really good protein powder, I would recommend it to anyone.

Jun 19, 2019


May 06, 2019
Verified Buyer
No written review.
Mar 25, 2019
Verified Buyer

Tastes great and gets the job done. My only issue is with the packaging, not the easiest to open when it arrives and the scoop is rather cumbersome.

Mar 25, 2019
Verified Buyer

I liked this a lot. Number one because of all the different kind of proteins it has. The only thing I didn’t like and that I think you guys could change it’s the scope shape, I think It would work a lot better if it was like a cylinder

Mar 12, 2019
Verified Buyer
  • 10 Vanilla

Oh bloody hell GOOD!!! top class product :) taste amazing, not too sweet, not too thick just perfect for me :) and all my stomach sensation gone after few days!! Thanks bb great job :)

Feb 16, 2019
Verified Buyer
  • 10 Vanilla

This Mass Gainer is amazing. First off, It tastes like a thick vanilla milkshake with the power of muscle-building protein. It has a great carb -protein ratio, It has probiotics. It keeps my muscles thick and full. I take 2 scoops post workout with organic whole milk,Creatine,Glutamine.Bcaa's all unflavoured and a multivitamin and fish oil. With Compound exercises in addition to this powerful post workout shake and other meals like Omega 3 eggs, oats, peanut butter, Whole grain spaghetti, spinach Extra virgin olive oil Atlantic Salmon I have put on healthy muscle mass. God bless you all

Jan 16, 2019
Verified Buyer

So... after checking many of the Mass Gainers here i picked this one for some reasons. One is because the types of proteins that are in this product (main source is isolate and the use of micellar casein no calcium or other inferior types). Second is because there are no vitamins here that interfere with each other like in other gainers. Taste is fine not amazing but good. Mixability is great in blender (havent try to mix 211g in shaker too much). 67g protein 810kcal adding to this banana and 2 tbsp peanut butter almond milk and youve got 1200+ calories !

Nov 22, 2018
  • 1 Vanilla

serious bloattt...... and not much extra energy from this gainner!!!!!!! seriouslyyy over priced!!! used to be $35 for 10lbs.....dudes might like it?????

1 Size
5 Lbs.
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Price: $29.59  ($2.69 / Serving)
Flavor Rating: 8.1


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Protein, Calories, and Carbs to Put On Serious Size*

What's in Signature Signature Mass Gainer

5 Lbs. Vanilla
Serving Size: 3 scoops (210g)
Servings Per Container: About 11
Amount Per Serving
Calories 810       
% Daily Value *
Total Fat 9 g 12%
Saturated Fat 2.5 g 13%
Trans Fat 0 g       
Cholesterol 50 mg 17%
Sodium 290 mg 13%
Total Carbohydrate 133 g 48%
Dietary Fiber 5 g 18%
Total Sugars 8 g       
Includes Added Sugar 0 g 0%
Protein 50 g 100%
Vitamin D 0 mcg 0%
Calcium 601 mcg 45%
Iron 1 mg 6%
Potassium 214 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
Maltodextrin, Protein Blend (Whey Protein Isolate, Milk Protein Concentrate, Whey Protein Concentrate, Micellar Casein, Egg Whites), Sunflower Creamer (High Oleic Sunflower Oil, Maltodextrin, Sodium Caseinate, Mono- and Diglycerides, Natural Tocopherols [to protect flavor], Tricalcium Phosphate [flow agent]), ModCarb™ Processed Organic Grains (Oat Bran, Quinoa, Buckwheat, Millet), Cluster Dextrin, Inulin, Coconut-Based Creamer (Coconut Oil, Maltodextrin, Food Starch, Mono- And Diglycerides, Tricalcium Phosphate), Oat Bran, Natural and Artificial Flavor, Sunflower Lecithin, Salt, Sucralose, Acesulfame Potassium, GanedenBC30® (Organic Inulin, Bacillus coagulans GBI-30 6086®.
Contains Egg, Milk.

Directions For Signature Mass Gainer: Add one serving (3 scoops) of Signature Mass Gainer to 16 oz. of cold water and shake well until dissolved. Adjust the level of liquid used to modify the flavor and thickness to your preference. If one full serving exceeds the capacity of your shaker bottle, mix 1/2 serving (1.5 scoops) with 8 oz. of cold water and consume two shakes throughout the day. To mix your gainer into a smoothie, combine with water (or beverage of choice) and frozen fruit and mix in a blender until you reach the desired consistency.

* 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.