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💥 Bulk smarter, not harder with Gold Standard Pro Gainer!
Optimum Nutrition Gold Standard Pro Gainer is a high-calorie, high-protein weight gainer designed for serious muscle mass and strength gains. Each 10 lb tub delivers 650 calories, 60g of protein, and over 80g of carbs per serving, with less than 8g sugar, making it ideal for clean bulking. Trusted by thousands, it supports post-workout recovery and sustained energy, helping you break through plateaus and build lean muscle efficiently.






















| ASIN | B002DYIZM6 |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #18,949 in Health & Household ( See Top 100 in Health & Household ) #10 in Sports Nutrition Weight Gainers #1,551 in Sales & Deals |
| Brand | Optimum Nutrition |
| Brand Name | Optimum Nutrition |
| Customer Reviews | 4.6 out of 5 stars 1,522 Reviews |
| Diet Type | Kosher |
| Flavor | Chocolate |
| Global Trade Identification Number | 00748927029727 |
| Item Dimensions | 5.91 x 11.42 x 16.93 inches |
| Item Weight | 4.62 kg |
| Manufacturer | Glanbia Performance Nutrition |
| Manufacturer Part Number | 1077769 |
| Model Name | GS - Pro-Gainers Weight Gainer - Protein Powder |
| Model Number | 1077769 |
| Number of Items | 1 |
| Package Type Name | Tub |
| Product Benefits | Muscle Growth, Muscle Strength, Weight Gain |
| Protein | 60 g |
| Recommended Uses For Product | Immune Support |
| Servings per Container | 28 |
| Total Servings Per Container | 28 |
| UPC | 748927029727 |
| Unit Count | 163.04 Ounce |
| Vitamins And Minerals | 22, 29, 330, 4, 50 micrograms |
J**S
Excellent Protein for Clean Bulking
Once again, Optimum Nutrition has a winner. To give you an idea of my lifestyle so you can make a comparison, my style of weight-lifting, eating, etc. is more of a "clean-bulking" program. Many will say the concept of the clean bulk is a myth, but I've done it. Is it perfect? Nah, but it works for me. I watch my diet all the time but am no calorie-counting zealot. I exercise every day of the week with five weight lifting sessions and three half-hour interval training cardio sessions (one day is combined of course). I am 5'6" and weigh 138 lbs with about 7% body fat. I am no expert on fitness but I've made it to where I am and I'm proud of it. So this review won't be the most scientific post on Amazon. First off, this is a GAINER protein. I will say that again because it merits repeating. GAINER. Despite it being visible in gigantic green letters on the package, and in the name, and in the description, I am sure some people managed to glaze over this. This is a higher calorie protein while being lower in fat, sugars, etc. so lean mass can be put on. You will put on some great muscle growth if used appropriately with exercise and proper diet. Despite the fact it's a lean gainer, some loss in definition is inevitable. Not all of those calories will go straight towards building muscle mass alone. I have been using this protein since November 2013 and I have seen some great improvements in my muscle gains and my strength shot through the roof. I am sure having the extra calories from the protein to increase muscle growth attributed to those results. Now I did experience some minor loss in definition with this protein since it is after all a GAINER; even with my constant clean diet not all of the calories went straight to my muscles some of it inevitably went to my fat reserves, particularly around the mid-section of course, but the loss in tone was minor. All in all I am thrilled with the results that this protein gave me and how much it bulked up my muscles with such little change to my "aesthetics" so to speak. The protein tastes fine. I am so sick of seeing "THIS PROTEIN DOESN'T TASTE LIKE CANDY. ONE STAR. THIS IS GROSS DO NOT BUY." If you want a candy like taste then go eat chocolate. This is a protein. If it has all the sugars and flavor additives then guess what? It defeats the purpose. Is it the best tasting one I've had? No, but I don't really care. It did it's job and that's what matters. I highly recommend this protein if you're looking to increase muscle mass without adding as much "other mass" AKA lean mass. The price is also a steal for 10 lbs. Pro Tip: If you open the box they ship it in with a knife, be careful. I learned the hard way.
A**C
Up 30lbs and counting!
If you're like me, you are probably a male between the ages of 17 and 28 and have a REAAALLY difficult time putting on weight. You have probably tried other weight gainers and have been frustrated by one of the following: poor mixability leading to chunky globs of powder that are a nightmare to swallow, terrible flavoring that makes you want to shed tears at the realization of how much money you spent on a sack of god-awful tasting powder, or of course, a product in which you see little if any results from. I've been there. Keyword: been. This describes me before I found ON Pro Gainer. I am 6 feet tall and have always clocked in at about 165-175lbs. Well, in August of 2015 I had a surgery which put me on a long road of recovery. Not only was I in pain, but I completely lost my appetite and began dropping weight quickly. By the beginning of October, I was dipping down to 155lbs. So I searched for mass gainers, and stumbled across this product. While the price tag was a bit more daunting than I would usually take a gamble on, the amount of protein and calories packed into each scoop (however heaping it need be) was enticing, so I gave it a try. Now it's the end of March (7 months later) and I am currently sitting at 186lbs. Of course I've adjusted my diet so I eat more food than I previously did, but much of my gains can be attributed to the use of this product post-workout. What's even more surprising is I only use the product 3-4 times a week! It is much, much easier to keep up a workout routine when you have a good tasting shake to look forward to after you're done. I absolutely demolish the shakes I make with this powder because it is so tasty and satisfying after going hard in the gym. I use bananas, peanut butter, a big scoop of powder, creatine and whole milk, and the shakes turn out super smooth and delicious. My strength gains have shot up, and my body no longer looks like it's in starvation mode. Stop being like the old me; buy this product and stick to a gym routine and you will absolutely see increases in your strength and mass.
F**O
Mixes wonderfully. Not chalky/Sandy
Got this for my husband as he’s been looking for a heavier protein powder as well as to gain some weight. The scoop is massive HOWEVER my husband swears it’s one of the best protein powders he’s ever had. He said it mixes beautifully no clumping so sandy texture just pure chocolate goodness. Hit doesn’t leave you with that extremely stuffed feeling at all he says. We bought the 10lb bag will update on results after he finishes the bag.
L**A
Good
If you wanna gain weight this is the most palatable choice for a bulk
E**S
Tastes great with milk....works as advertised
I have been using ON ProGainer for about a year and it has definitely helped me maintain my weight and add a few pounds too. The taste is excellent and mixes well in a blender with milk. I personally don't like the way it mixes or tastes with water. I love the double chocolate flavor and drink it every single morning mixed with milk, peanut butter, a banana, walnuts and ice cubes. It's delicious. I deducted one star because the 10 pound bag doesn't open wide enough to get the giant scoop out with the powder in it without spilling some powder all over the place. Trust me I have tried. I commend ON for having a heavy duty zip lock on the back but it just doesn't open wide enough. I saved a 5 pound canister and I pour in the bag outside so I don't make a mess in the house. Also, I love the fact it works with my Amazon Dash button.
C**.
It works!
Definitely works if your trying to gain some lean mass. Excellent results! I ended up gaining 6lbs of lean muscle with one bag. This product works great to add to a high protein lean diet if your goals are to put on some lean mass.
G**.
Weight gain and more managed diet.
When people always tell me, "Oh how I so wish I had your metabolism", I am quick to remind them that it such a blessing can also be a curse. I spend so much money on food and am constantly selecting meals based on portion size and calories which is not always practical or enjoyable. Add to that, try eating big AND keeping the food healthy. The same people that wish they had my metabolism are then quicker to respond, "Well you could just eat fast food all the time and get your calories!" No thanks. L I have been using ON's 100% gold standard why for years now and so it was only natural that this gainer be considered. So, last year, this gainer became a regular part of my diet, consuming before bed. I wouldn't do the entire full serving before bed which is a huge scoop from the bag, but rather I would say a 60% serving size which was enough to drink without feeling uncomfortable while going to sleep. Two main things resulted: The first is a marked increase in bodyweight, a good thing in my case and likely want you are looking to do as well if you are reading reviews about this product. I wouldn't say it was dry and tone muscle mass increase, but definitely a bit more size to the physique as usage of this gainer is recommended as a compliment to a weight training program. The second thing that happened, and by my standards more important to me, was a more managed appetite during the day. In the morning I didn't feel like I had to have a large meal (which often required more time and ingredients), then at the end of the night, I didn't feel like I needed to gorge at dinner because I knew I had my gainer shake before bed. I would even attribute some margin of cost savings to this gainer powder.
S**Z
The best
By far the best tasting and best mixing protein out there. I just shake it up with a blender bottle and it’s smooth with no chunks. Dissolves perfectly
M**R
Happy with the product delivery
The packaging was great and genuine product. This product only will work when you have strict diet.
M**M
Decent gainer double chocolate flavor is nice,One serving is one scoop and 3/4 almost two scoops
I did like the taste It’s not too sweet like other gainers which is good I didn’t like that one serving is almost two scoop One scoop is (100gm)
H**A
Five Stars
The best in terms of lean muscle mass and strength build up!! 10/10
A**N
Amazing product...
Amazing product..I have gain 5.5 kg weight in 20 days.
G**V
Highly recommended for beginners
I though I could never gain weight. But I gained 10kg weight (7kg muscle mass) in two months.
Trustpilot
2 weeks ago
1 month ago