Price: $42.94 ($8.44 / Pound) & FREE Shipping on orders over $49. Details
Price: $40.79 ($8.01 / Pound) $42.94 Save $2.15 (5%)
Price: $42.94
In Stock. Ships from and sold by Gift-wrap available.
In Stock. Ships from and sold by

5 Pound 3 Sizes: 5 Pound
5.09 Pound Loading details...
10 Pound Loading details...
5 Pound Loading details...

Add Accessories

Added to your Cart

Subscribe & Save:

Deliver 1 every
2 months (Most common)
Deliver 1 every
2 months (Most common)
Select Your Recurring Delivery
Deliver 1 every
  • 1 month
  • 2 months (Most common)
  • 3 months
  • 4 months
  • 5 months
  • 6 months

Cancel anytime. Already a member? Sign in

One-time purchase:

Pro Gainer, Double Chocol... has been added to your Cart

Other Sellers on Amazon
Add to Cart
$53.99 ($10.61 / Pound)
+ Free Shipping
Sold by: Sundarbans
Add to Cart
$55.99 ($11.00 / Pound)
+ Free Shipping
Sold by: XSNonline

Save up to 15% on Optimum Nutrition When You Subscribe

Pro Gainer, Double Chocolate, 5.09 Pounds

4.5 out of 5 stars 689 customer reviews
| 71 answered questions
About the Product
  • Ultimate lean gainer formula
  • 7 Superior Proteins Including Whey, Casein, and Egg
  • High Protein to Carb Ratio
  • Mixes Effortlessly with a Blender, Shaker, or Spoon
  • It is recommended that consumers check with a qualified health care professional to ensure the product is appropriate for him or her

Frequently Bought Together

  • Pro Gainer, Double Chocolate, 5.09 Pounds
  • +
  • Optimum Nutrition Creatine Powder, Unflavored, 600g
  • +
  • BlenderBottle Classic Loop Top Shaker Bottle, Clear Black, 28 Ounce
Total price: $65.16
Buy the selected items together

Product Description

Flavor: Double Chocolate | Size: 5 Pound

Don't judge a gainer based solely upon its calories per serving. Because when it comes to gaining lean mass, not all calories are created equally. Unlike typical weight-gain formulas that are loaded with simple sugars and fat, Pro Complex Gainer derives a much higher percentage of calories from protein - 7 premium sources of protein to be exact. By also supplying complex carbohydrates, dietary fiber, medium chain triglycerides (MCTs), digestive enzymes, vitamins, essential minerals, and great taste as well, ON's created the ideal lean gainer. Pro Complex Gainer was made with quality, not quantity in mind. Because ON understands that you want to get big, not fat. The Ingredients That Make Up the Mass High Quality Proteins: Pro Complex Gainer is comprised of high biological value proteins, which means they are easily digested and absorbed so they provide a full complement of amino acids to support the rebuilding process. 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 sustained energy that help prevent proteins from being burned off as fuel. Each serving of Pro Complex Gainer provides 85 grams of carbohydrates and 4 grams of fiber with only 5 grams of sugar. In addition Pro Complex Gainer supplies medium chain triglycerides (MCTs) and other energy-dense lipids. Micronutrients: Various vitamins and essential minerals are utilized during the growth process. Without these micronutrients your body cannot effectively process proteins, carbohydrates, or fats. Each serving of Pro Complex Gainer provides 25 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 ...

Product Details

Flavor: Double Chocolate | Size: 5 Pound
  • Product Dimensions: 8.1 x 8.1 x 10.3 inches ; 5.1 pounds
  • Shipping Weight: 5.5 pounds (View shipping rates and policies)
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B0015R3A1S
  • UPC: 795186403812 748927029710
  • Item model number: 1030485
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (689 customer reviews)
  • Amazon Best Sellers Rank: #4,081 in Health & Personal Care (See Top 100 in Health & Personal Care)

From the Manufacturer

High-Protein Weight Gainer

Putting on size requires a balance of heavy training and quality nutrition. Because everyone’s a little different, some have a harder time packing on muscle than others. PRO Gainer is a high-protein formula delivering calories that count during recovery. Each shake provides ample amounts of supplemental protein, carbs, vitamins and minerals to build on the amount you’re getting through a balanced diet of food. Use PRO Gainer as your post-workout recovery shake and/or a high-protein meal between meals.

Beyond The Basics

60 grams of quality proteins per scoop and 85 grams of carbohydrates to help restore glycogen levels. Also contains 24 vitamins & minerals and 5 grams of dietary fiber per serving. Ideal for stacking with other size-supporting ingredients.

Calories That Count

Recovery from heavy training requires amino acids from protein to help kick-start the recovery process as well as carbohydrates to help restore glycogen energy depleted during intense training. PRO Gainer packs plenty of both into 650 quality calories.

Micronutrient Support

The vitamin and mineral needs of weight room warriors may outweigh those of less determined individuals. That’s why PRO Gainer is formulated with a micronutrient blend of 24 vitamins and minerals to build on the amount you get from a healthy balanced diet.

Optimal Usage Occasions

Between meals, post-workout to help kick-start the recovery process and before bed to help feed recovering muscles throughout the night.

The Brand You Trust For Quality

Optimum Nutrition (ON) was founded in 1986 with a mission to set higher standards for the sports nutrition industry. As one of the few manufacturers to own and operate state-of-the-art production facilities that are GMP compliant, ON’s commitment to quality is uncompromising. You’ll appreciate the extra effort the industry leader puts into assuring ingredient purity, effortless mixing and exceptional taste.

Important Information

Maltodextrin, Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, Hydrolyzed Whey Peptides, Glutamine Peptides), Cocoa (Processed With Alkali), Lipid Blend (Medium Chain Triglycerides, High Oleic Sunflower Oil), Partially Hydrogenated Guar Gum, Natural and Artificial Flavors, Lecithin, Vitamin/Mineral Blend (Dimagnesium Phosphate, Calcium Carbonate, Tricalcium Phosphate, Maltodextrin, Ascorbic Acid, Ferric Orthophosphate, Molybdenum Aa Chelate, D-alpha Tocopheryl Acetate, Boron Proteinate, 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, Aminogen, Sucralose, Acesulfame Potassium, Lactase.

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Flavor Name: Double ChocolateSize: 10 Pound
I've tried multiple protein powders, but this one breaks up super well in water. Tastes just like a chocolate beverage and doesn't leave you feeling bloated, heavy, or necessarily "full" afterwards. It's an excellent choice for those such as myself who have a hard time consuming enough calories and protein during the day to see any sort of gains.

The one major thing I'd like everyone to be aware of is this: ONE "HEAPING" SCOOP IS NOT A FULL SERVING. One "heaping" scoop is supposed to be 165g, but if you notice on the pictures, it's roughly 120g. You will literally need to stack an additional 1/2-3/4 cup on top of the entire full cup and hope that no protein comes piling down off the sides in order to get close to a full serving.

A better way to measure:

***Each 1/4 cup is 25g (so, 1/4 cup = 25g; 1/2 cup = 50g; 3/4 cup = 75g; 1 full cup = 100g)***

I take one full cup in the morning and sort of ballpark around 3/4 cups post-workout to ensure I'm getting the full serving. Just wanted to give people a heads up, especially if you're trying to keep track of these sort of things.
Comment 120 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Verified Purchase
After much research, several years ago I started using this muscle-gainer and have enjoyed it ever since. To me it is almost the perfect work-out / weight-lifting / energy / muscle-gaining drink. It has a great amount/ratio of carbs (85g ... only 5g in sugars), protein (60g .. several types), vitamins/minerals (usually only 20%-35% RDA ... some drinks put in 100% in many areas but I want to use a multi-vitamin, GNC Mega Men, instead), and taste (I have enjoyed my favorite banana, strawberry, and vanilla). It also has low sodium (15% RDA) and cholesterol (20% RDA) relative to many other drinks I saw, which are quite high in these areas ... beware. I don't drink it every day, just usually about half a serving before a workout and half after. That gives me enough carbs/energy to enjoy the workout and then protein after for good/reasonable muscle growth, all the while staying low in body-fat. It easily mixes with lowfat milk or soy milk, and tastes good with both. I'd give it 6 stars if I could.
5 Comments 72 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Flavor Name: Vanilla CustardSize: 10 Pound Verified Purchase
As an amateur/hobby bodybuilder, this single product has become a staple in my diet over the past 3 years. When I started getting serious about lifting again out of college, I had dropped to 145lbs from my previous high of 175lbs. My metabolism is fast, and I simply had trouble keeping up for a number of reasons: time, money, and the difficulty eating the calories I needed in solid foods. I then found this product, which has helped all three of those issues.

VALUE - At approximately $2.25 a serving (when using subscribe and save), this is one of the cheapest quality 650 calorie meals you can provide your body with. I found this to be much more cost effective than trying to put together my own meal. Thanks to Amazon's subscribe and save, the prices compete with the other bigger online supplement retailers and I don't have to worry about re-ordering.

PERFORMANCE - I can drink an entire serving in 2-5 minutes without feeling bloated/sick (taste ranges from acceptable to good - banana cream and vanilla are must tries). I have one serving every morning, and one at some point after my workout and before bed. This accounts for 1300 of my 3500 daily calorie intake. For me, without the aid of liquid weight gainers - it would be impossible to achieve my calorie goals and gain lean mass. I especially would struggle in the morning -- I often don't have time to prepare a good meal, and have trouble eating too many solid foods first thing in the morning. Also - understand that while 60 grams of protein a serving may seem like too much, this is not 60 grams of pure whey protein that is metabolized very quickly. It is packed with 7 sources of protein (faster and slower metabolized proteins) so it takes several hours for your body to metabolize the protein.
Read more ›
2 Comments 74 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Flavor Name: Double ChocolateSize: 5 Pound Verified Purchase
This stuff tastes great, mixes well, and is very easy on my stomach. I used it for months as a breakfast shake and would recommend it to anyone looking for a quick liquid meal with a good macronutrient profile.

But it never really felt like 650 calories. It just wasn't as dense as I would expect, and my body didn't take as long to process it as I would expect for so many calories. The serving size on the back says "1 heaping scoop (165g)". I decided to test the volume vs weight measurement, so I bought a food scale. I filled one scoop all the way up until it was a little over the top and I added it to my blender which had been tared to zero on the scale. It was 100g, or 60% of 1 serving.

Given that, serving size should be more like 2 scoops. If you only use 1 scoop you are getting about 400 calories, not 650, and about 36g of protein, not 60. This makes a lot more sense when I consider the serving size of other protein and carb powders I've used.

I've found that Optimum tends to be optimistic in their serving sizes (it takes incredible physics to fit a serving into their scoops), whereas Now foods tends to be spot on (1 scoop really equals 1 serving). I haven't tried other brands, but recommend you go by weight using a food scale rather than scoop size if you want to really know what you are eating.
Comment 26 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Set up an Amazon Giveaway

Pro Gainer, Double Chocolate, 5.09 Pounds
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more about Amazon Giveaway
This item: Pro Gainer, Double Chocolate, 5.09 Pounds

Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. assumes no liability for inaccuracies or misstatements about products.