For Muscle Building & Weight Gain 1260 Calories 50 g Protein 5 g Creatine Monohydrate Artificially Flavored Protein Powder Supplement Strength Training Perfomance Support Support Weight Gain Goals Authentic Optimum Nutrition Product Informed Choice - We Test You Trust Regularly Tested For Banned Substances Why Serious Mass™? With two heaping scoops, you get... 50 g of protein to support muscle building and recovery‡ 1,260 calories to support calorie surplus for weight and muscle building‡ 253 g of carbohydrate to support fueling of intense workouts and aid in replenishment of glycogen stores 5 g of creatine monohydrate to support strength, power, and performance‡ Naturally Occurring: 8 g Glutamine, 11 g Branched Chain Amino Acids, 24 g Essential Amino Acids Good source of 19 vitamins and minerals Vitamins A, C, E, and zinc help support a healthy immune system Optimum Nutrition® has been trusted to provide the highest quality in post-workout recovery, pre-workout energy and on-the-go sports nutrition for over 35 years and in more than100 countries. We are obsessed with quality . We sweat the details, scrutinizing every ingredient in every product that we make. We hold ourselves to the highest production standard, all so you can unlock you body's full potential. Serious Mass™ is designed to provide serious calories, protein and carbohydrates - making this a convenient way to get extra calories throughout your day. Scale Up Your Serious Mass® About 1 Heaping Scoop 25 g Protein 630 Calories 125 g Carbs About 2 Heaping Scoops 50 g Protein 1,260 Calories 235 g Carbs *see nutrition information for sat fat, cholesterol and sodium content ‡When taken over time addition to normal calorie intake and regular weight resistance training.
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For Muscle Building & Weight Gain 1260 Calories 50 g Protein 5 g Creatine Monohydrate Artificially Flavored Protein Powder Supplement Strength Training Perfomance Support Support Weight Gain Goals Authentic Optimum Nutrition Product Informed Choice - We Test You Trust Regularly Tested For Banned Substances Why Serious Mass™? With two heaping scoops, you get... 50 g of protein to support muscle building and recovery‡ 1,260 calories to support calorie surplus for weight and muscle building‡ 253 g of carbohydrate to support fueling of intense workouts and aid in replenishment of glycogen stores 5 g of creatine monohydrate to support strength, power, and performance‡ Naturally Occurring: 8 g Glutamine, 11 g Branched Chain Amino Acids, 24 g Essential Amino Acids Good source of 19 vitamins and minerals Vitamins A, C, E, and zinc help support a healthy immune system Optimum Nutrition® has been trusted to provide the highest quality in post-workout recovery, pre-workout energy and on-the-go sports nutrition for over 35 years and in more than100 countries. We are obsessed with quality . We sweat the details, scrutinizing every ingredient in every product that we make. We hold ourselves to the highest production standard, all so you can unlock you body's full potential. Serious Mass™ is designed to provide serious calories, protein and carbohydrates - making this a convenient way to get extra calories throughout your day. Scale Up Your Serious Mass® About 1 Heaping Scoop 25 g Protein 630 Calories 125 g Carbs About 2 Heaping Scoops 50 g Protein 1,260 Calories 235 g Carbs *see nutrition information for sat fat, cholesterol and sodium content ‡When taken over time addition to normal calorie intake and regular weight resistance training.
SKU
3-66478
Brand
Optimum Nutrition
Category
health / sports-nutrition / protein / mass-gainers
Variants
1
Customer reviews
5.0
verified purchase
I didn’t see the weight.. I got surprised how much big the bottle in size or should I say box! .. I try it but not as described just a little bit like 2 TSP mixed it with some cold water then I added milk and mixed again .. it’s for sure very vanilla taste.. u can mix it with many things.. next time I will try with frozen strawberries and yogurt.. good ingredients but I don’t know is it enough alone or should I take beside it my normal vitamins.. I love it
8/8/2022
5.0
verified purchase
Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt!
the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered
4/14/2026
5.0
verified purchase
Good taste
Good for use and quality and size and nice scentand package good benefit
1/5/2026
5.0
verified purchase
Biggggg bottle
Took much time for me to complete this bottle, because the bottle is toooooo big. Did not really gain mass probably because i was not following the instruction
10/23/2025
5.0
verified purchase
Quality is super! The ingredients are great! Size arranged! What you need! Performance is felt!
the product arranged, perfectly packed, the effect is definitely there! I will order more! Just as quickly delivered
10/10/2025
5.0
verified purchase
good
The Optimum Nutrition Serious Mass in Vanilla has good use quality — it mixes best with a blender and makes a thick, filling shake. The benefit is it packs in a huge amount of calories and protein, perfect for anyone trying to gain weight or build muscle. The scent is sweet and creamy, and the flavor is a classic vanilla milkshake style. The packaging and size are good, big enough to last a while if used regularly.
9/20/2025
5.0
verified purchase
good
The quality is excellent. The ingredients are safe. The taste is non-existent. The quantity is sufficient for a month and a half. The package is somewhat small. benefit is great.
8/19/2025
5.0
verified purchase
Прекрасно!
Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!
7/28/2025
5.0
verified purchase
Прекрасно!
Thank you very much for this product, it suited me, I like the packaging, comfortable and stylish, I will order more of these products, and recommend them to all my friends and relatives! good!!
7/23/2025
5.0
verified purchase
great
great quality protein quality Ingredients, size is fine, from plant base, package is ok, benefit your health, great composition for support to athletic diet, post and pre workouts, health lifestyle, and make you achieve your goals, and has great taste.
