Review Graph
Top Rated Flavors
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Most Recent
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Most Helpful
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All Reviews (680)
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Verified Buyers (647)
Laura H
Healthy Lifestyle
Verified Buyer
best protein powder on the market, effective nutritionally complete meal replacement option, tastes like chocolate milk*
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Zemir M
Verified Buyer
Optimum Nutrition is high quality products. It tastes good and has high quality ingredients. *
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Sunkiss
Build Muscle
Verified Buyer
The vanilla flavor is amazing!!! I will definitely be buying this flavor again, I mixed it with banana & oats, this is the best flavor I ever had.*
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George C
Verified Buyer
Mixes well, Vanilla taste is one of the best tasting that I have tried. The scoop is extremely large compared to other mass gainers. I like the fact that there is more protein unit measure than other mass gainers.*
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Alfonso M
Verified Buyer
This taste best with Almond milk. I break it down into two servings. One after a work out, one before bed. *
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Calvin S
Increase Endurance
Verified Buyer
very tasteful for me will stick with this flavor. great feeling from this brand*
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Walter C
Healthy Lifestyle
Verified Buyer
It's very good to up your mass for me he is the best choice*
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Kelly
Verified Buyer
One of if not the best mass gainer on the market. Would definitely recommend.*
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John S
Verified Buyer
Plenty of good tasting protein. I have only used the chocolate flavour but plan on buying vanilla next. 12 pound bag is by far the best bargain out there. I have purchase numerous times - never been disappointed *
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John S
Verified Buyer
Excellent product, best price on internet. Consistent quality, I have ordered numerous times in last couple of years., always satisfied. *
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Matteo G
Build Muscle
Verified Buyer
My favorite. I always take it since tried it. The most complete.*
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Anne M
Healthy Lifestyle
Verified Buyer
Nice product can you please check yours and also good brand *
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ELIT FITNESS
Verified Buyer
I really like this product I will definitely buy it back again*
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Sean Y
Build Muscle
Verified Buyer
Really like flavor mixes great. Delivery time was on point. We definitely be ordering again from Muscle and Strength. Thank you..*
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Tony A
Build Muscle
Verified Buyer
Excellent brand, great sale highly recommended for extra calories to gain weight. *
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fritzson E
Burn Fat
Verified Buyer
"I’ve been using Optimum Nutrition Serious Mass and it’s been a game changer. Great for bulking up with solid calorie and protein content. Tastes good, mixes well, and helps with recovery. I gained weight steadily without feeling bloated. Definitely a top pick for hard gainers!"*
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Mariya M
Build Muscle
Verified Buyer
I love this product, Banana or Vanilla are my go to flavors due to being able to mix them with multiple things.*
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Q user
Verified Buyer
I got the vanilla flavor. There is a little artificial aftertaste.*
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Jerrt1
Build Muscle
Verified Buyer
Mixes well, great taste and quick delivery. Site is easy to navigate.*
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Mike
Increase Strength
Verified Buyer
I always chooses this flavor and this particular mass gainer for it is very easy to mix and consume. No lumps etc.*
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Amady samba S
Build Muscle
Verified Buyer
Gained mass. Awesome. Tastes good and easy to drink. I ordered again*
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Mike
Increase Strength
Verified Buyer
This one is my favorite. Been using it ever since the first time buying it.*
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Scott W
Build Muscle
Verified Buyer
Great product, I take it as a protein by using a standard protein scoop (2scoops), (not the huge laundry scoop included). It has the perfect protein to carb ratio for building lean muscle, I mix with water, ice and a dab of PB Fit powder peanut butter and a teaspoon of instant coffee grounds. Taste amazing!!!*
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Sagnik S
Build Muscle
Verified Buyer
It is really an amazing product. As a working class individual hitting the gym everyday, it is a must product for the proper protein intake day in and day out.*
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Reda S
Build Muscle
Verified Buyer
One of the Best Mas gainers with no doubt good stuff and great Quality for anyone who wants to gain mass*
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Mike
Increase Strength
Verified Buyer
Easy to mix and easy to consume in my point of view. The Flavour is amazing.*
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rock
Build Muscle
Verified Buyer
Good experience with serious mass gainers; gained about 8 pounds in two weeks.*
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Ali D
Verified Buyer
Best brand best quality. I can see the changes. I git 3 kgs in a month and a half*
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ELIT FITNESS
Verified Buyer
Between the others articles that I Bought, it is the best one*
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Kurt F
Verified Buyer
Great mass gainer for those who struggle to put on weight. I do half serving with oatmeal banana and peanut butter and milk. Works great.*
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Orrion B
Verified Buyer
This has been one of the most beneficial gainers I’ve tried. Very flavorful.*
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Ricardo P
Build Muscle
Verified Buyer
It is a classic classic from a leading brand. I love Optimum Nutrition*
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Ricardo P
Build Muscle
Verified Buyer
I take it daily, it is a friend to keep you at the desired weight*
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Ricardo P
Build Muscle
Verified Buyer
I love Optimum Nutrition. This product is the best in mass gainer*
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Bodybuilder Mami
Increase Strength
Verified Buyer
Looking to put on size quickly, this is a great item. Mixes well with water or almond milk *
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Kevaughan G
Verified Buyer
great tasting whey protein that mixes easily in water or the beverage of your choice. *
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Mike
Increase Strength
Verified Buyer
Very tasty and easy to consume. I really do like this product and I would recommend it to anyone who is looking to gain mass.*
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Orrion B
Verified Buyer
I truly wish I’d have started using this long ago. Perfect if you need to put on some weight.*
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Wade H
Verified Buyer
Amazingly delicious. Want weight? Take Serious Mass! Worth every penny *
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Kelly
Verified Buyer
One of the best mass gainers on the market. Definitely up there. Very trustworthy and efficient*
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Kurt F
Verified Buyer
One of the best weight gainers on the market. Packed with carbs for that hard gainer type person.*
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Orrion B
Verified Buyer
Tried this one out about 3 months ago and swear by it. Solid product..*
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Ravi B
Verified Buyer
One of the oldest mass gainer out there... First time I used this I felt gains*
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Bodybuilder Mami
Increase Strength
Verified Buyer
My female client went from 117 to 137lbs in a year. This along with her strength and conditioning program really transformed her body.*
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Orrion B
Verified Buyer
Perfect flavor. I subscribed to Optimum Nutrition recently and I’m sold.*
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* Muscle & Strength does not imply any medical claims from this review. There are no
guarantees of specific results and results may vary.
* 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.
