Mass Gainer Complex – Double Chocolate | GNC

GNC Pro Performance® Mass Gainer Complex – Double Chocolate


Item # 370100


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Size: 24 Servings

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Product Information


  • 50g of Fast, Medium and Slow Releasing Quality Protein
  • Infused with Ribose and MCTs for Rapid Muscle Energy
  • With Essential Amino Acids and Great Source of Fiber

When you need results, you need Pro Performance® Mass Gainer Complex. This scientifically advanced formula is powered by a 50g protein complex system that supplies fast, medium and slow digesting quality proteins. This helps ensure your muscles get the amino acids they need quickly and over time for prolonged results.

Pro Performance® Mass Gainer Complex provides the conditionally essential amino acid, arginine, a critical component in helping the body create nitric oxide for greater pumps. It also supplies essential Branched Chain Amino Acids (BCAA) isoleucine, leucine and valine. BCAA help fuel your muscles, preserve muscle energy supplies and help to reduce muscle breakdown during intense exercise.

Pro Performance® Mass Gainer Complex also contains a special blend of fiber and complex carbohydrates to power the body’s primary energy creation machinery. This dual-carbohydrate system provides both rapid-absorbing and prolonged fuel for your muscles when you need it most. It also helps to replenish energy stores after high-intensity training. Pro-Performance® Mass Gainer Complex is also powered by ribose and medium chain triglycerides (MCT) which are quickly absorbed for pure muscle energy – with absolutely no trans fat!

With Pro Performance® Mass Gainer Complex, you get the combination of protein, essential aminos, pure carbs and unique micronutrients to drive your body to help put on the added size that you want – fast!

Label (click image to enlarge)


Mix four scoops (182 g) with 16 fl. oz. of water, milk or your favorite beverage post-workout. For best results take twice daily on both training and non-training days.
Contains: Milk and Soybeans., Contains: Milk, Soy and is manufactured on equipment that also processes Peanut, Wheat and Egg.


KEEP OUT OF REACH OF CHILDREN, Notice: Significant product settling may occur.

Other Ingredients

Maltodextrin, Protein Blend, Cocoa Powder (Dutch Process), Natural and Artificial Flavors, Polydextrose, Ribose, Medium Chain Triglycerides, Lecithin, Sucralose


Store in a cool, dry place away from light.
Distributed by : General Nutrition Corporation Pittsburgh, PA 15222

Nutrition Facts

Serving Size  4 Scoop(s)
Servings Per Container  24

Amount Per Serving     % DV

Calories 700  
  Calories from Fat 40  

Total Fat 4.5g   7%
  Saturated Fat 2.5g   13%
Trans Fat 0g  
Cholesterol 105mg   35%
Potassium 1000mg   29%
Total Carbohydrate 115g   38%
  Dietary Fiber 5g   20%
Protein 50g  
Sugars 6g  
Sodium 270mg   11%

Vitamin A 0   1%
Vitamin C 0   1%
Iron 0   14%

Calcium  0   **

** Daily Value (DV) not established.


5.0 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Gain 20 pounds in 5 months
Best thing I ever taken.
When r u guys getting more in stock?
July 12, 2017
Great Product
Excellent flavor, works like it says, good price. Well pleased with product
February 13, 2017
Pretty good
I bought this on sale because I had switched to a vegetarian diet and lost weight really quickly. I have to admit this is actually a pretty great weight gainer. I take the full 4 scoops serving and don't feel bloated, full, or a sugar rush like the old-school GNC pro weight gain used to make me feel. In fact there is hardly any sugar at all in this. The taste and texture is excellent, just like a smoothie or a milk shake. I gained 3-4 pounds in a little over a week. But I really noticed I was a lot stronger in my workouts and my muscles got stronger really fast. Wish I had been taking this all along!
March 8, 2016
Switched to this from the Walmart Brand Protein. And I feel a HUGE DIFFERENCE. First of all for some reason compared to what I WAS taking, this protein just makes me HUNGRY after taking it! And that's GOOD! It doesn't make me feel full after it breaks down, my body just wants more nutrients and I LOVE THAT!!! Especially since I'm only 140 pounds, and I've been feeling a huge difference in gains. This stuff is AMAZING. I suggest you give it a try!
October 2, 2014
Easy to blend, and tasty
Tastes very well, 4 scoops blend easily with water or milk. I usually use milk but water is just as good. Lasts me a few good weeks.
January 30, 2014
best quality for the price
i take this every day .. morning and after evening workout !!!.. it releases slowly protein i got so far
October 8, 2013
Effective and tastes great
About to finish my first bag. Great results. Gained around 8 pounds. Tastes great. I mix it with 12 ounces of water. Or mix it with 8oz egg whites and 8oz water. 2 scoops either way. 4 scoops is way too much and doesn't fit in shaker. If it's on sale in store again, I'd get it. It has a unique taste in a good way, chocolate is great.
August 25, 2013
Awesome. Period
If you are unsure about which brand to get ...stop looking and buy this mass gainer. I've tried many over the years and this one is best by far. However I've only tried the Dutch chocolate so I cannot say anything about the other flavors.
July 9, 2013
Most Excellent
Just finished my first bag, and using my own workout plan I went from 135 lbs to 145 lbs. Two scoops an hour before lifting, and two scoops immediately after. Out of all the protein supplents I've tried, this is one of the best. Buying my second bag tomorrow.
May 1, 2013
Best Taste
It breaks up really easy and the scoop isn't ginormous. To me it taste better with water and that's the first. It's simple and easy to take, I don't have to chug it or prep my mind for it.
March 24, 2013