Pro Gainer
Optimum Nutrition

Pro Gainer

When Protein Powder Contributing to Muscle Growth
Contains Over 600 Calories with 60g of Protein and 85g of Carbs to Support Muscle Growth
9.1  out of 10  (760 Reviews)
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Product Overview

The Bigger Picture of Lean Gainers

Don't judge a gainer based solely upon its calories per serving. Because when it comes to gaining musle mass, not all calories are created equally. Unlike typical weight management formulas that are loaded with simple sugars and fat, Pro Complex Gainer derives a much higher percentage of its calories from 7 premium protein sources. By also supplying complex carbohydrates, dietary fiber, medium chain triglycerides (MCTs), digestive enzymes, vitamins, essential minerals, and great taste as well, we've created the weight management supplement to support muscle gain. Pro Complex Gainer was made with quality, not quantity, in mind. Because we understand that you want to build quality muscle and keep fat increases to a minimum.

The Ingredients That Make Up the Mass:

High-Quality Proteins: Pro Complex Gainer is comprised of high quality proteins, which are easily digested and absorbed to provide a full complement of amino acids for muscle growth and maintenance. Each serving of Pro Complex Gainer provides a 60-gram dose of premium muscle-building protein made from 7 unique sources.

Complex Carbohydrates & Lipids: Carbohydrates and lipids (fats and oils) provide an energy source that the body uses as fuel. Each serving of Pro Complex Gainer provides 85 grams of carbohydrates and 4-5 grams of fiber with only 5 grams of sugar. In addition Pro Complex Gainer supplies medium chain triglycerides (MCTs) and other lipids.

Micronutrients: Various vitamins and essential minerals are utilized by the body for overall well-being. Without these micronutrients, which can be obtained through a well-balance diet, your body cannot effectively process proteins, carbohydrates, or fats. Each serving of Pro Complex Gainer provides 26 vitamins and essential minerals.

Calories: To gain just one extra pound, you need to consume approximately 3,500 calories-above and beyond what you normally consume through foods, beverages, and supplements. Pro Complex Gainer provides over 600 calories per serving.

Pro Complex gainer: Quality mass through premium proteins and nutrient-dense calories.

Beyond The Basics

  • Ultimate Weight Management Formula
  • 650 Calories
  • Few Sugars
  • 7 Superior Proteins Including Whey, Casein, and Egg
  • High Protein to Carb Ratio
  • Mixes Effortlessly with a Blender, Shaker, or Spoon
  • Easy to Drink

Ratings & Reviews

Pro Gainer
Overall Rating
760 Ratings
Verified Buyer Rating
436 Ratings
Average Flavor Rating
5 Flavors
Top Rated Flavor
Double Chocolate
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.
Apr 12, 2020
Verified Buyer
  • 9 Double Chocolate

Best hard gainer protein ever. I’ve been using for years. Price is ridiculous on here but now they price match. I ran out of my last bag (which I caught on sale at vitamin Shoppe for $23.00) 🙌🏾. I ordered Saturday afternoon from bodybuilding and was delivered Sunday morning. Can’t beat that..

Mar 24, 2020
  • 9 Double Chocolate

the price on this site has gone from 60-70$ for a 10lbs bag to 100$ for a 10lbs bag so I will have to buy from cheaper sites.. Very high price in this site.

Feb 13, 2020
Verified Buyer
  • 7 Double Chocolate

$30 cheaper on other websites and with faster or same speed shipping.

Dec 12, 2019
Verified Buyer

I have been buying this for several years and it’s the best protein shake to gain weight but the price on this site has gone from 60-70$ for a 10lbs bag to 100$ for a 10lbs bag so I will have to buy from cheaper sites

Dec 05, 2019

I order banana cream flavor I got double chocolate... I got packet opened asked them to send new one they told no. Asked them I will send you guys a pic and please refund my shipping cost for return they again told no... no help of this guys. Please dont buy from there unless you want to receive open packet product and no support or help. Dont wast your money here.

Dec 02, 2019
  • 10 Vanilla Custard

Bought this on the ON website for $67.99/10 LBS and they think $80 is good after a 20% discount. I won't order from this site ever again. Just google for a promo and you will find one, i used one for 15% off.

Nov 28, 2019
Verified Buyer
  • 10 Double Chocolate

Great product been using for years. Also echoing other's sentiments. Price has been jacked up and is no longer reasonable to purchase from this site until it is adjusted.

Nov 09, 2019
Verified Buyer
  • 10 Double Chocolate

Great product when it was 70 bucks, its cheaper on other sites. Was nice knowing ya

Nov 07, 2019
Verified Buyer
  • 10 Double Chocolate

I've been buying this product from for 2 years because it's a great product that works with no side effects. HOWEVER, I WONT BE BUYING IT AGAIN from I bought for $69.99 for two years, now they just went from $69.99 to $100.99. I mean who does that. Then i went to the main manufacturer website, "Optimum Nutrition", guess what, it's listed for $79.99 plus a coupon of 15% off, final total $69.99. Not only they lost my business on this product, but with all other supplements i was buying along with it. when i talk to one their representative, she said it's an error in pricing and they'll fix it, that was 4 months ago, still the same.

Oct 29, 2019
  • 1 Double Chocolate

Already found another source @ $70 No longer will buy from here.

Oct 24, 2019
Verified Buyer

Finding another product until the price changes back to something reasonable.. Ripoff.

Oct 09, 2019
  • 10 Double Chocolate

Product was great and seen some differences without workout BUT pricing makes me throw out 🥵

Oct 03, 2019
Verified Buyer
  • 10 Double Chocolate

very great product, 100%

Oct 02, 2019
Verified Buyer
  • 9 Double Chocolate

Love the high protein content and chocolate flavor, but $99... seriously? The sales promos cant even be used on this. Ripoff

Sep 26, 2019
Verified Buyer

This awesome .. tasty and light sugar for people who like something not too sweet or thick. I use it with milk and it's amazing.

1 Size
4.6 Kilograms
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2 Flavors
Double Chocolate
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Price: £75.99  (£2.71 / Serving)
Flavor Rating: 9.3


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Contains Over 600 Calories with 60g of Protein and 85g of Carbs to Support Muscle Growth

What's in Optimum Nutrition Pro Gainer

10.16 Lbs. Double Chocolate
Serving Size 1 heaping scoop (165 g)
Servings Per Container28
Amount Per Serving
Calories 650       
% Daily Value *
Total Fat 8 g 10%
Saturated Fat 4 g 20%
Trans Fat 0 g       
Cholesterol 80 mg 27%
Sodium 380 mg 17%
Total Carbohydrate 85 g 31%
Dietary Fiber 5 g 18%
Total Sugars 7 g       
Includes 2g Added Sugars 4%
Protein 60 g 120%
Vitamin D 0 mcg 0%
Calcium 540 mg 40%
Iron 4.8 mg 25%
Potassium 350 mg 8%
Vitamin A 290 mcg 30%
Vitamin C 23 mg 25%
Vitamin E 5.3 mg 35%
Thiamin .3 mg 25%
Riboflavin .4 mg 30%
Niacin 4.2 mg 25%
Vitamin B6 .4 mg 25%
Folate 130 mcg 35%
Vitamin B12 1.1 mcg 45%
Biotin 58 mcg 190%
Pantothenic Acid 2 mg 40%
Phosphorus 330 mg 25%
Iodine 29 mcg 20%
Magnesium 125 mg 30%
Zinc 2.9 mg 25%
Selenium 12 mcg 20%
Copper .4 mg 45%
Manganese .8 mg 35%
Chromium 37 mcg 110%
Molybdenum 20 mcg 45%
Chloride 180 mg 8%
* 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, Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Calcium Caseinate, Egg Whites, Whey Peptides, Whey Glutamine Peptides), Cocoa (Processed With Alkali), Lipid Blend (Medium Chain Triglycerides, High Oleic Sunflower Oil), Partially Hydrogenated Guar Gum, Natural And Artificial Flavor, Lecithin, Vitamin and Mineral Blend (Dimagnesium Phosphate, Calcium Carbonate, Tricalcium Phosphate, Maltodextrin, Ascorbic Acid, Ferric Orthophosphate, Molybdenum Amino Acid Chelate, D-Alpha Tocopheryl Acetate, Boron Amino Acid Chelate, Niacinamide, Zinc Oxide, Manganese Sulfate, D-Calcium Pantothenate, Selenomethionine
Pyridoxine Hydrochloride, Vitamin A Palmitate, Cupric Oxide, Chromium Polynicotinate, Thiamin Hydrochloride, Riboflavin, Beta Carotene, Folic Acid, Biotin, Potassium Iodide, Cyanocobalamin), Salt, Carbogen® Enzyme Blend (Maltodextrin, Amylase, Cellulase, Hemicellulase), Aminogen® Protease, Sucralose, Acesulfame Potassium, Lactase.
Contains: Milk, Egg, Soy, and Wheat.

Directions For Pro Gainer:

SHAKER CUP: Add 1 heaping scoop of PRO Gainer™ to 16 oz of cold water and shake until thoroughly dissolved. TIP: Using milk will add additional calories, carbs and proteins to the nutrient profile of your gainer shake. You can also stack your shake with creatine and other size-supporting supplements.


By using an electric blender, you can turn your gainer shake into a nutrient-dense mini-meal. Add in fresh or frozen fruit, peanut butter, nuts, seeds and size-supporting supplements. TIP: Adding a couple of ice cubes can improve the consistency of your shake.

* 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.
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