Pro Gainer
Optimum Nutrition

Pro Gainer

Whey Protein Powder for Serious Muscle Gain*
Over 600 Calories and 60g of Protein and Complex Carbs to Get Big*
9.1  out of 10  (760 Reviews)
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Product Overview

Taste the Gains
Optimum Nutrition Pro Series
  • 60 Grams of High-Quality Protein to Help Kick-Start Recovery
  • 85 Grams of Carbohydrates to Help Restore Energy Levels
  • 650 Calories per Serving With Just 1 Gram of Added Sugar
  • 22 Vitamins & Minerals Because the Nutrient Needs of Very Active Individuals May be Greater Than Less Active People
Optimum Nutrition Pro Gainer
Pro Gainer At A Glance. What - Weight Gain Formula. Usage Occasion - After training or Between Meals. Training Support - Helps Build Muscle and Restore Energy Levels*

Ratings & Reviews

Pro Gainer
Overall Rating
760 Ratings
Verified Buyer Rating
437 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.
Dec 09, 2020
Verified Buyer
  • 10 Double Chocolate

Taste and results are great, I have been using this product since 2008 but have since bought it from other sites due to the price hike. It was $69.95 back in the days, even up to 2017-2018 but $100 is ridiculous!

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

1 Size
10.19 Lbs.
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2 Flavors
Double Chocolate
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Price: $100.99  ($3.61 / Serving)
Flavor Rating: 9.3


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Over 600 Calories and 60g of Protein and Complex Carbs to Get Big*

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: Add 1 heaping scoop of PRO Gainer™ to 16 fluid ounces of cold water or milk in a shaker cup. Close tightly and shake until thoroughly mixed. TIP: By using an electric blender, you can stack this size supporting formula with fresh/frozen fruits, peanut butter, nuts, seeds and other nutrient-dense options. For best results, use in conjunction with a healthy, balanced diet and well-structured exercise program.

* 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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