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Optimum Nutrition Pro Gainer

By Optimum Nutrition

Optimum Nutrition Pro Gainer Optimum Nutrition Pro Gainer Optimum Nutrition 4.6 5 287 74.9
$74.90 +
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Species Nutrition Isolyze 44 Serves : Vanilla Peanut Butter

Also add Species Nutrition Isolyze 44 Serves : Vanilla Peanut Butter and save $40 (normally $97.95)

Total: $172.85
Bundle Discount: -$40
Together: $132.85

Jay's Expert Tip

This is a protein and carbohydrate rich gainer. The proteins include whey, casein and egg which is an ideal blend throughout the day. It's less than 5% fat so if you're looking for a low-fat yet relatively calorie-rich gainer, this is a good option.

Meet the experts


Optimum Nutrition Pro Gainer

What is Optimum Nutrition Pro Gainer?

Are you still struggling to get swole?

Have you tried other mass gainers with no success?

Want to boost your size AND your muscle mass?

Optimum Nutrition Pro Gainer is the ultimate in lean mass gainers. The majority of mass gainers are loaded with simple sugars and unhealthy fats. Simple sugars will lead to crashes along with fat gain. So you’ll be gaining mass but you won’t be gaining the muscle mass you want.

Optimum Nutrition Pro Gainer, on the other hand, is packed with a blend of protein to deliver exactly what your muscles need to grow. You’ll also get a range of complex (no crash) carbohydrates, fiber, healthy fats, digestive enzymes, vitamins, minerals, and an insane amount of BCAAs.

What are the benefits of using Optimum Nutrition Pro Gainer?

Each serving of Optimum Nutrition Pro Gainer hits you with 650 calories and 60 grams of elite quality protein. This special formula is made to enhance muscle mass and size, not fat mass. You’ll gain the weight you want, not the weight your doctor will be disappointed about. Thanks to its hardcore protein blend, you’ll be getting amino acids over the course of several hours to support lean muscle gains. The following protein types have been shown to trigger protein synthesis, promote muscle growth, kick start muscle recovery, and boost your energy and performance. (1-6)

Whey Protein Isolate
Whey Protein Concentrate
Calcium Caseinate
Egg Albumin
Hydrolyzed Whey Peptides
Glutamine Peptides

Who should be using Optimum Nutrition Pro Gainer?

Optimum Nutrition Pro Gainer is theperfect supplement for anyone who wants to put on LEAN muscle mass and avoid fat gains. At 650 calories and 60 grams of protein per serving, Optimum Nutrition Pro Gainer is going to help muscle growth and recovery, ensuring that you reach your target weight. Combined with an effective weight training program, Optimum Nutrition Pro Gainer is the ideal option for the hard gainers who are looking to bulk up.


1. Tsutsumi R, Tsutsumi YM. Peptides and proteins in whey and their benefits for human health. Austin J Nutri Food Sci 2014;1(1): 1002

2. Blomstrand E, Eliasson J, Karlsson HK, Köhnke R.Branched-chain amino acids activate key enzymes in protein synthesis after physical exercise. J Nutr. 2006 Jan;136(1 Suppl):269S-73S.

3. Norton, Layne, Layman, Donald. Leucine Regulates Translation Initiation of Protein Synthesis in Skeletal Muscle after Exercise. J. Nutr. February 2006 vol. 136 no. 2 533S-537S.

4. Negro M, Giardina S, Marzani B, Marzatico F. Branched-chain amino acid supplementation does not enhance athletic performance but affects muscle recovery and the immune system. J Sports Med Phys Fitness. 2008 Sep;48(3):347-51.

5. Mourier A, Bigard AX, de Kerviler E, Roger B, Legrand H, Guezennec CY.Combined effects of caloric restriction and branched-chain amino acid supplementation on body composition and exercise performance in elite wrestlers.Int J Sports Med. 1997 Jan;18(1):47-55.

6. De Lorenzo A, Petroni ML, Masala S, Melchiorri G, Pietrantuono M, Perriello G, Andreoli A.Effect of acute and chronic branched-chain amino acids on energy metabolism and muscle performance. Diabetes NutrMetab. 2003 Oct-Dec;16(5-6):291-7.

Total Serves per Package: 14

Serving Size: 1 heaping scoop (165g)

Per 165g ServePer 100g
Energy2719.5 kJ1648.2 kJ
Protein60.1 g36.4 g
Carbohydrate85 g51.5 g
Sugar5 g3 g
Fibre4 g2.4 g
Fat7.9 g4.8 g
Saturated Fat3.5 g2.1 g
Cholesterol60.1 mg36.4 mg
Sodium360 mg218.2 mg

NOTE: THE INGREDIENTS AND NUTRITION INFORMATION IS FOR CHOCOLATE FLAVOUR. These may slighlty vary depending on different flavours.

Maltodextrin, Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Calcium Caseinate, Egg Albumin, 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.

Other Ingredients/Information
20% Vitamin A
35% Vitamin C
50% Calcium
25% Iron
35% Vitamin E
15% Thiamin
35% Riboflavin
20% Niacin
20% Vitamin B6
20% Folic Acid
20% Vitamin B12
20% Biotin
20% Pantothenic Acid
35% Phosphorous
45% Iodine
30% Magnesium
20% Zinc
10% Selenium
20% Copper
35% Manganese
30% Chromium
25% Molybdenum
4% Chloride Percent Daily Values are based on 2,000 calorie diet. Your daily values may be higher of=r lower depending on your daily caloric needs


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.

ELECTRIC BLENDER: 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.

Allergen Information: Contains Milk, Egg, Soy (Lecithin), And Wheat (Glutamine Peptides) Ingredients.

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Reviews of Optimum Nutrition Pro Gainer

Average Rating :

4.6 Based on 285 ratings
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Best tasting gainer everrrr

By Elizabeth reviewed on 17/08/2017
I have been using this product for many years to help my nutritional requirements. It is the best tasting protein I've ever had. Put in the blender with milk and you've got the best tasting milkshake our there.
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Protein Gainer

By Alexander reviewed on 14/08/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Great taste and great results! Has a high carbohydrate content to allow for fast bulking Whilst still having a decent protein content.
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Clean Gainer!!!

By Pep reviewed on 12/08/2017
Mixes and taste great! Ingredient and macro profile is solid! Really helps adding quality calories into my bulk. Another great product from ON.
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Optimun pro gainer

By Rommel reviewed on 10/08/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

It's great, really works for me and the best thing is, it taste so was recommended by my friend who purchased the same kind from Amino Z and he said that I should try it. Because now a days there's a lot of product out there and you dont really know which one works for you and which one taste better. People are always looking for better product and most of the time people listen to comments and reviews and most of all recommendation.
You wouldn't know if it works for you or not till you give it a try. The good news about this, the moment they taste this they will never look for another product. Give it a shot!
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Highly recommend for hard gainers!

By Chris reviewed on 9/08/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Ive tried a lot of weight gainer powders out there and this ones definitely one of my favourite. The chocolate flavour was delicious and mixes easily!
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Pro Gainer

By Simon reviewed on 4/08/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Ordered the vanilla custard by mistake but the flavour grows on you. Probably tastier than the strawberry
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Was just ok

By Hus reviewed on 25/07/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

I had given this a go as there were a lot of reviews in regards to how good it was. It didn't mix as good as the reviews. I didn't really see any gains.
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Bodybuilding & Bulking

By Andy reviewed on 24/07/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

After many year's of training & money spent on Protein powders I finally found the one that stood out from the rest with exceptional results!
Then I was introduced to the world of Optimum Nutrition... thing's soon then changed.
PRO Gainer has a very high Carbohydrate and Protein intake per shake but the best part is it does not make you feel weighted on the gut or that feeling with such a high calorie diet that you feel food up to your throat day in/day out.
Very light and smooth to digest without compromising quality and the flavors are amazing!
A definite recommended product by my books.
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ON pro gainer

By Raja reviewed on 19/07/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Quality protein and carbs packed into one hell of a package. Helped in my bulking process and would recommend to people looking to put on some good mass.
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By Steven reviewed on 7/07/2017

Verified buyerA verified buyer is someone who has purchased this product from Amino Z

Excellent taste. Can't complain with 60g of protein in a serving. Does make you feel full when taking in between meals
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Don’t like the product within 2 scoops? Get your money back!

We understand that trying new supplements sometimes carries some uncertainty. Perhaps you’re not sure about a new flavour, or you just bought the wrong product.

Even if your product is opened, within 2 scoops (or 2 serves) if you’re not happy with it, you can send it back for a full money-back guarantee! We’ll even arrange the return shipping for you so there is no additional cost to you!

Prior to issuing a refund (or replacement), we will just need to receive the item back to ensure that sufficient product remains.

Simply contact us by email, phone, chat or visit us in-store within 30 days of receiving your order that was placed directly with us online through our website, over the phone or in-store.

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Here's what we will do in certain situations:

- Your item has been damaged/lost in transit (we'll replace it)
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So we can fix things quickly for you, please let us know of any issues within 48 hours of receiving your goods. In certain situations we may ask for a photograph (for example if the product is damaged in transit, so we can take it up with the delivery company to avoid future issues).

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In a nutshell, we work really hard on keeping you happy. So if a problem arises, just contact us and we'll do our very best to fix it!

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