TrueGain Mass Gainer
RSP Nutrition

TrueGain Mass Gainer

Protein Powder for Mass Gaining, Recovery & Muscle Growth*
50g Protein, 1,100 Calories, 230g Carbs with 10g Of Naturally Occurring BCAAs in Every Serving to Maximize Gains*
9.7  out of 10  (15 Reviews)
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Product Overview


Premium Mass Gainer

TrueGain Bags

Performance Benefits*

Muscle Icon

Gain Mass*

50g Protein + 1,100+ Calories + 230g+ Carbohydrates

Heart Icon


10g Naturally Occurring BCAAs + 8g Naturally Occurring Glutamine & Glutamic Acids

Kettlebell Icon

Muscle Growth*

50g Protein

RSP Athlete on Battle Ropes


Muscle Icon Mass Gainer*
Heart Icon Post-Workout Recovery*
TrueGain Bags

TrueGain is the premium lean weight gainer. Powered with a massive dose of over 1,100 calories, 230 grams of carbohydrates and 50 grams of protein, TrueGain is the ideal solution to fuel muscle growth, support quality weight gain, and maximize recovery.*

Athlete Lifting

Ratings & Reviews

TrueGain Mass Gainer
Overall Rating
15 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.
Nov 08, 2019
  • 9 Vanilla

I bought truegain strsight from the rsp nutrition site and here's my review. 1 . Chalky was the vanilla but somehow good lol. 2. Half serving is 25g of protein 600 calories

Oct 22, 2019
  • 10 Chocolate

Truegain is a great product! It helps me to gain some weight. Will use this product again! Good job RSP!

Oct 14, 2019
  • 8 Vanilla

Good product. Vanilla was pretty good. Mixes well and turned out very smooth. Very good gainer.

Oct 09, 2019
  • 10 Chocolate

I have been messing around with other gainers lately. Most of them make me feel bloated and heavy. I tried this one due to a recommendation from a friend. After 2 weeks I could see a big difference in muscle fullness without feeling bloated and sluggish. I enjoy drinking this every morning with some almond milk, banana, and peanut butter. Amazing stuff!

Oct 05, 2019
  • 10 Vanilla

Excellent product, I could see the results and I loved it, it tastes pretty good.

Oct 01, 2019
  • 10 Vanilla

Very smooth. It mixes extremely​ well and I like drinking it with my morning coffee.

Sep 29, 2019
  • 10 Chocolate
  • 10 Vanilla

Rsp is the only brand, I have found, that creates amazing chocolate AND vanilla flavors. They aren’t chalky or gritty. They mix well and taste amazing. I truly feel a difference in performance and recovery when added to my diet as opposed to not using it.

Sep 28, 2019
  • 10 Chocolate
  • 10 Vanilla

If you are trying to put on mass then true gain is absolutely the right formula for you and it doesnt give you that nasty stomach bloat that others have given me as well the flavor profile is actually chocolate not chalk.

Sep 27, 2019
  • 10 Chocolate

I was out of the gym for two months since then i been using true gain, my road to muscle recovery has been fast with this product. I usually take it before bed time so it gives me a better recovery and muscle growth.

Sep 27, 2019
  • 10 Chocolate

Love all of RSP products! There True Gainer is perfect for someone trying to put on the the right way!

Sep 27, 2019
  • 9 Chocolate

Haven't been disappointed with any product from RSP. This is just another good supplement to have. Great taste and really helps with the caloric intake

Sep 27, 2019
  • 10 Chocolate

Big fan of RSP nutrition, from their whey-trueGain. Just recently tried the chocolate flavor TrueGain as a post workout supp and it’s been great! It Mixes well, and it’s great way to get those extra calories in! Definitely recommend.

Sep 27, 2019
  • 10 Vanilla

Use to help with my calorie intake. Mixes well. Tried vanilla, great taste. Another good lean product from RSP.

Sep 26, 2019
  • 10 Vanilla

Great product. Good taste and really blends well. Just another great product of RSP.

Sep 26, 2019
  • 10 Chocolate

My 15 year old son started playing football, but couldn't put on mass no matter what we fed him. Truegain really made a difference, after using this for 2 weeks he has already gained almost 5 lbs. If you're having trouble putting on mass give truegain a try, you wont be disappointed.

1 Size
12 Lbs.
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Price: $59.97  ($3.53 / Serving)
Flavor Rating: 9.6

What's in RSP Nutrition TrueGain Mass Gainer

Serving Size 2 Scoops (313 g)
Servings Per Container17
Amount Per Serving
Calories 1,190       
%Daily Value *
Total Fat 5 g 6%
Saturated Fat 2.5 g 12%
Trans Fat 0 g       
Cholesterol 155 mg 52%
Sodium 470 mg 20%
Total Carbohydrate 238 g 87%
Dietary Fiber 0 g 0%
Total Sugars 27 g       
Includes 11 g Added Sugars 22%
Protein 50 g 100%
Vitamin D 1.2 mcg 6%
Iron .6 mg 3%
Calcium 935 mg 72%
Potassium 560 mg 12%
The % Daily Value 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, Milk Protein Concentrate, Whey Protein Concentrate, Whey Protein Isolate, Natural & Artificial Flavor, Creamer (Sunflower Oil, Maltodextrin, Sodium Caseinate, Dipotassium Phosphate, Monoglycerides, Diglycerides, Soy Lecithin, Sodium Silicoaluminate, Tocopherols), Flaxseed, Salt, Xanthan Gum, Soy Lecithin, Sucralose
Contains: Milk and Soy Lecithin

Directions For TrueGain Mass Gainer:

Training day: Mix 16-20 oz of water with 2 full scoops and consume in the morning and after workout.

Off day: Mix 16-20 oz of water with 2 full scoops and consume between meals.

Warnings: Use this product as a food supplement only. Do not use for weight reduction. Store in room temperature, in a 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.