Optimum Nutrition - Serious Mass Vanilla - 6 lbs.
Putting on mass has never been so easy with Optimum Nutrition Serious Mass. This weight gainer powder contains a whopping 1,250 calories per serving, with 2 massive 167g scoops packing 50g of blended protein including Whey Concentrate and Isolates, as well as casein and egg proteins. Plus over 250g of carbohydrates, no added sugar, as well as creatine, glutamine and glutamic acid to support strength and recovery, look no further if you want to take your muscle building to the next level. Plus with as little as 7g of fat and enhanced with 25 vitamins and minerals, you can forget dirty bulking to increasing your calorie intake, and reach for a tub of Optimum Nutrition Serious Mass instead, to flood your body with muscle building nutrients capable of sky-rocketing your daily intake of proteins and carbohydrates. Available in Banana, Vanilla and Chocolate, prepare for one of the most delicious and best textured shakes on the market. Don’t forget to mix with low fat milk to step up your calorie game to the next level!
Putting on mass has never been so easy with Optimum Nutrition Serious Mass. This weight gainer powder contains a whopping 1,250 calories per serving, with 2 massive 167g scoops packing 50g of blended protein including Whey Concentrate and Isolates, as well as casein and egg proteins. Plus over 250g of carbohydrates, no added sugar, as well as creatine, glutamine and glutamic acid to support strength and recovery, look no further if you want to take your muscle building to the next level. Plus with as little as 7g of fat and enhanced with 25 vitamins and minerals, you can forget dirty bulking to increasing your calorie intake, and reach for a tub of Optimum Nutrition Serious Mass instead, to flood your body with muscle building nutrients capable of sky-rocketing your daily intake of proteins and carbohydrates. Available in Banana, Vanilla and Chocolate, prepare for one of the most delicious and best textured shakes on the market. Don’t forget to mix with low fat milk to step up your calorie game to the next level!
Putting on mass has never been so easy with Optimum Nutrition Serious Mass. This weight gainer powder contains a whopping 1,250 calories per serving, with 2 massive 167g scoops packing 50g of blended protein including Whey Concentrate and Isolates, as well as casein and egg proteins. Plus over 250g of carbohydrates, no added sugar, as well as creatine, glutamine and glutamic acid to support strength and recovery, look no further if you want to take your muscle building to the next level. Plus with as little as 7g of fat and enhanced with 25 vitamins and minerals, you can forget dirty bulking to increasing your calorie intake, and reach for a tub of Optimum Nutrition Serious Mass instead, to flood your body with muscle building nutrients capable of sky-rocketing your daily intake of proteins and carbohydrates. Available in Banana, Vanilla and Chocolate, prepare for one of the most delicious and best textured shakes on the market. Don’t forget to mix with low fat milk to step up your calorie game to the next level!
Putting on mass has never been so easy with Optimum Nutrition Serious Mass. This weight gainer powder contains a whopping 1,250 calories per serving, with 2 massive 167g scoops packing 50g of blended protein including Whey Concentrate and Isolates, as well as casein and egg proteins. Plus over 250g of carbohydrates, no added sugar, as well as creatine, glutamine and glutamic acid to support strength and recovery, look no further if you want to take your muscle building to the next level. Plus with as little as 7g of fat and enhanced with 25 vitamins and minerals, you can forget dirty bulking to increasing your calorie intake, and reach for a tub of Optimum Nutrition Serious Mass instead, to flood your body with muscle building nutrients capable of sky-rocketing your daily intake of proteins and carbohydrates. Available in Banana, Vanilla and Chocolate, prepare for one of the most delicious and best textured shakes on the market. Don’t forget to mix with low fat milk to step up your calorie game to the next level!
in 22 offers
The lowest price for Optimum Nutrition - Serious Mass Vanilla - 6 lbs. right now is $76.40 at Oxygen Nutrition, compared across 18 retailers.
The all-time low was $31.66 on 2 May 2026 — today's price is 141% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 9 June 2026.
Last updated at 09/06/2026 16:30:08
OPTIMUM NUTRITION Serious Mass Protein Powder Gainer, Banana, 2.72kg - [2024/2025 plastic neck band packaging may vary]
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Optimum Nutrition Serious Mass, 2.72kg / Vanilla
Same-day delivery $12.90
Optimum Nutrition Serious Mass Vanilla 2.72kg
Delivery $9.95
Optimum Nutrition Serious Mass Vanilla 2.72kg
Delivery between Fri – Tue $9.95
Optimum Nutrition Serious Mass Chocolate 2.72kg
Delivery between Fri – Tue $9.95
Optimum Nutrition Serious Mass Chocolate 2.72kg
Delivery between 12–17 June $9.95
Optimum Nutrition Serious Mass Vanilla 2.72kg
Delivery between 12–17 June $9.95
Optimum Nutrition Serious Mass, 2.72kg / Chocolate // Powerhouse Supplements
Delivery $10
Optimum Nutrition - Serious Mass, 2.72kg / Vanilla
Delivery between Fri – Tue $12.90
OPTIMUM NUTRITION ON Serious Mass 2.72kg
14-day returns
originally posted on influenster.com
I've been trying to gain weight for about 4 years, being 6ft and weighting 9st (57kg) and I was very skinny for my form, I had decided to go hard this time and my gym friend recommended this particular powder over other ones I had been previously trying as he said it had helped people with similar issues to gain weight. So I started Gym again with this shake (two scoops on a morning on rest days and 2x2 scoops morning and after gym sessions) and within a week started to notice results. Now results wont just come from gym and this shake if you're like me, I've had to stick between 3500 - 5000 calories daily, with high carb high protein foods (as lean as possible meat) and a healthy side of multivitamins. The result is I gained 11 pounds (5kg) in 4 weeks, which for me ... MoreI've been trying to gain weight for about 4 years, being 6ft and weighting 9st (57kg) and I was very skinny for my form, I had decided to go hard this time and my gym friend recommended this particular powder over other ones I had been previously trying as he said it had helped people with similar issues to gain weight. So I started Gym again with this shake (two scoops on a morning on rest days and 2x2 scoops morning and after gym sessions) and within a week started to notice results. Now results wont just come from gym and this shake if you're like me, I've had to stick between 3500 - 5000 calories daily, with high carb high protein foods (as lean as possible meat) and a healthy side of multivitamins. The result is I gained 11 pounds (5kg) in 4 weeks, which for me was mind boggling. So if you feel it's extremely hard to gain weight and are looking around, contemplate giving this a try, eat healthy and work out, I can almost promise this will work. It is hard work though, and it will cost a bit more monthly, but I feel better right now mentally and physically than I ever have in my life.
originally posted on walmart.com
This is an excellent meal replacement, or supplemental meal to get your daily calorie intake up. The taste is great, very much like a milkshake when mixed with milk. It blends very well, though make sure you use either a large enough shaker (otherwise some may stick to the underside of the drinking spout and will require some additional shaking) or use a blender. I personally recommend splitting the servings into two single scoop servings, split throughout the day. I like to do 12oz of milk with one scoop in the morning after a workout, and another identical shake after my dinner, sort of like a dessert. The high calorie, high protein, and high nutrient content makes this a great addition to anyone interested in fitness, who might be struggling to meet their caloric ... MoreThis is an excellent meal replacement, or supplemental meal to get your daily calorie intake up. The taste is great, very much like a milkshake when mixed with milk. It blends very well, though make sure you use either a large enough shaker (otherwise some may stick to the underside of the drinking spout and will require some additional shaking) or use a blender. I personally recommend splitting the servings into two single scoop servings, split throughout the day. I like to do 12oz of milk with one scoop in the morning after a workout, and another identical shake after my dinner, sort of like a dessert. The high calorie, high protein, and high nutrient content makes this a great addition to anyone interested in fitness, who might be struggling to meet their caloric needs through food alone, or for those who don't have the time to make that extra high calorie meal every day.
originally posted on Holland & Barrett
Not sure why people don’t like the vanilla I love it!!! Just now as excited to try the other flavours of vanilla is said to be the worst ha! I absolutely love this shake and how much calories I can get from just one drink!! I struggle to gain weight (appetite and fast metabolism issues) and this is THE best I have ever tried. I love how it does not have all of that nonsense thickening agents (guar gum, xanthan gum, etc) that makes protein shakes taste terrible! I hate the slippery and heavy texture it gives so I am absolutely thrilled that I found this one that has none of those nasty ingredients! Please don’t ever change the formulation it’s perfect!!
| Product dimensions | 21 x 21 x 27 cm; 2.72 Kilograms |
| Country of origin | USA |
| Item form | Powder |
| Flavour | Vanilla |
| Product benefits | Muscle Growth |
OPTIMUM NUTRITION Serious Mass Protein Powder Gainer, Banana, 2.72kg - [2024/2025 plastic neck band packaging may vary]
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Optimum Nutrition Serious Mass, 2.72kg / Vanilla
Same-day delivery $12.90
Optimum Nutrition Serious Mass Vanilla 2.72kg
Delivery $9.95
Optimum Nutrition Serious Mass Vanilla 2.72kg
Delivery between Fri – Tue $9.95
Optimum Nutrition Serious Mass Chocolate 2.72kg
Delivery between Fri – Tue $9.95
I've been trying to gain weight for about 4 years, being 6ft and weighting 9st (57kg) and I was very skinny for my form, I had decided to go hard this time and my gym friend recommended this particular powder over other ones I had been previously trying as he said it had helped people with similar issues to gain weight. So I started Gym again with this shake (two scoops on a morning on rest days and 2x2 scoops morning and after gym sessions) and within a week started to notice results. Now results wont just come from gym and this shake if you're like me, I've had to stick between 3500 - 5000 calories daily, with high carb high protein foods (as lean as possible meat) and a healthy side of multivitamins. The result is I gained 11 pounds (5kg) in 4 weeks, which for me ... MoreI've been trying to gain weight for about 4 years, being 6ft and weighting 9st (57kg) and I was very skinny for my form, I had decided to go hard this time and my gym friend recommended this particular powder over other ones I had been previously trying as he said it had helped people with similar issues to gain weight. So I started Gym again with this shake (two scoops on a morning on rest days and 2x2 scoops morning and after gym sessions) and within a week started to notice results. Now results wont just come from gym and this shake if you're like me, I've had to stick between 3500 - 5000 calories daily, with high carb high protein foods (as lean as possible meat) and a healthy side of multivitamins. The result is I gained 11 pounds (5kg) in 4 weeks, which for me was mind boggling. So if you feel it's extremely hard to gain weight and are looking around, contemplate giving this a try, eat healthy and work out, I can almost promise this will work. It is hard work though, and it will cost a bit more monthly, but I feel better right now mentally and physically than I ever have in my life.
This is an excellent meal replacement, or supplemental meal to get your daily calorie intake up. The taste is great, very much like a milkshake when mixed with milk. It blends very well, though make sure you use either a large enough shaker (otherwise some may stick to the underside of the drinking spout and will require some additional shaking) or use a blender. I personally recommend splitting the servings into two single scoop servings, split throughout the day. I like to do 12oz of milk with one scoop in the morning after a workout, and another identical shake after my dinner, sort of like a dessert. The high calorie, high protein, and high nutrient content makes this a great addition to anyone interested in fitness, who might be struggling to meet their caloric ... MoreThis is an excellent meal replacement, or supplemental meal to get your daily calorie intake up. The taste is great, very much like a milkshake when mixed with milk. It blends very well, though make sure you use either a large enough shaker (otherwise some may stick to the underside of the drinking spout and will require some additional shaking) or use a blender. I personally recommend splitting the servings into two single scoop servings, split throughout the day. I like to do 12oz of milk with one scoop in the morning after a workout, and another identical shake after my dinner, sort of like a dessert. The high calorie, high protein, and high nutrient content makes this a great addition to anyone interested in fitness, who might be struggling to meet their caloric needs through food alone, or for those who don't have the time to make that extra high calorie meal every day.
Not sure why people don’t like the vanilla I love it!!! Just now as excited to try the other flavours of vanilla is said to be the worst ha! I absolutely love this shake and how much calories I can get from just one drink!! I struggle to gain weight (appetite and fast metabolism issues) and this is THE best I have ever tried. I love how it does not have all of that nonsense thickening agents (guar gum, xanthan gum, etc) that makes protein shakes taste terrible! I hate the slippery and heavy texture it gives so I am absolutely thrilled that I found this one that has none of those nasty ingredients! Please don’t ever change the formulation it’s perfect!!
Serious Mass has helped me to go from 159 lbs. to 167 lbs. in about 2 months, and that is with half a serving a day. I went from 153 lbs. to 159 lbs. by eating more and strength training and then hit a wall. At 55 years and 5'9" I simply couldn't eat the amount of food required to gain more weight and strength. And as long as I still see gains while working out I will continue to go with half a serving a day. I blend a handful of frozen strawberries and frozen sliced banana with 12 oz of cold water until smooth, add half a serving of Serious Mass, blend it and then add 12 oz of whole milk for another short burst. This results in a good tasting drink that is not frothy. I take it to work in a thermos bottle and usually finish it within 5 hours. Blending it with just ... MoreSerious Mass has helped me to go from 159 lbs. to 167 lbs. in about 2 months, and that is with half a serving a day. I went from 153 lbs. to 159 lbs. by eating more and strength training and then hit a wall. At 55 years and 5'9" I simply couldn't eat the amount of food required to gain more weight and strength. And as long as I still see gains while working out I will continue to go with half a serving a day. I blend a handful of frozen strawberries and frozen sliced banana with 12 oz of cold water until smooth, add half a serving of Serious Mass, blend it and then add 12 oz of whole milk for another short burst. This results in a good tasting drink that is not frothy. I take it to work in a thermos bottle and usually finish it within 5 hours. Blending it with just water left an aftertaste that I didn't like too much. I have been using ON Whey Protein since I started working out, one serving with 12 oz of whole milk in the morning with breakfast, and then one serving with 8 oz of cold water 30 minutes after my workout in the evening. Serious Mass is a great addition that has been helping me meet my daily protein goals, gain weight and strength at the same time.
I got this product a few days ago. It tastes very good, unlike most shakes. When I blended it with milk and water, it was smooth (the thickness really depends on how much water-or whatever fluid-you add to it) and very easy to drink. It kinda tastes and smells like vanilla milkshake. I blended 2 heaped scoops with milk and water. However, I felt bloated and had slight abdominal discomfort almost all through the day. I guess I should have started with one scoop (as suggested for new users). All in all it seems good, I would just need to reduce to one scoop and keep using.
It's ok but not the best . I would expect for $125 to get a months supply but it only lasts 2 weeks. Its 2 scoops per serve but they are not scoops they are jugs, it's literally a jug inside the bag not a usual scoop, that's how you get so many carbs and calories per serve because you are consuming 2 jugs of powder per serve which my blender struggled mixing. It will put on fat and weight so make sure you are actually working out other wise it will be just fat you put on. Wouldn't buy it again unless I was 50 kg and was really looking to put on fat fast.
I really enjoyed using this product, I was able to successfully bulk up to approximately 230 pounds. However, I do have a few gripes with this product. For the price, I really do wish that it had more servings. 50 dollars and only 8 servings is a lot of money to be paying per serving. There are many more things that can bulk you up for cheaper. not only that but the mass gaining ingredients in this product consist almost exclusively of sugars, which isn't good if your are trying to maximize muscle growth for your bulk. You may find yourself gaining more fat instead. Setting that aside this will definitely help you gain weight fast, and I will recommend this product especially if you have a hard time gaining weight.
I've been using this product (chocolate) for years to add more muscle quicker while I work out. I have gained 25 lbs of muscle as a result :) It tastes great too. I mix mine with milk, vanilla ice cream, and 3 scoops of Serious Massin a 72 oz. Ninja blender. I highly recommend this product and GNC sells it at a good price. Oh, and it comes with a scoop in the bag. Save your scoop as sometimes but not very often the one you get somehow gets sunk down to the bottom of the bag. It is a very fine powder and you'll make a mess trying to get that buried scoop out.
It does what it's supposed to as long as you follow the servings. This is my second time using it consistently first time me starting weighing at 6'1 145. 8 months of lifting and drinking these daily. Sometimes 2 full serving shakes in one day. I managed to put on 45 pounds without looking fat. I had just kinda bulked up. I started a new job so I lost the consistency. But recently picked it back up in April. And I've managed to put on almost 10 pounds in 2 months. Doing the same thing as the first time. Drinking 1-2 a day and going to the gym and blasting myself. Be weary though, it's a bit rough on the taste, I always try to add a good amount of ice to mine I think it helps the chocolate go down. I also noticed that on my first time through my cholesterol was ... MoreIt does what it's supposed to as long as you follow the servings. This is my second time using it consistently first time me starting weighing at 6'1 145. 8 months of lifting and drinking these daily. Sometimes 2 full serving shakes in one day. I managed to put on 45 pounds without looking fat. I had just kinda bulked up. I started a new job so I lost the consistency. But recently picked it back up in April. And I've managed to put on almost 10 pounds in 2 months. Doing the same thing as the first time. Drinking 1-2 a day and going to the gym and blasting myself. Be weary though, it's a bit rough on the taste, I always try to add a good amount of ice to mine I think it helps the chocolate go down. I also noticed that on my first time through my cholesterol was elevated from around month 6 til I stopped taking it. I assume because I was beating on my body for a while that's why it started to elevate. This is probably best used for a 2-3 month time span
I had been underweight my entire life, really struggling to gain weight. This product worked exactly as advertised, helping me gain weight and at a very affordable price when subscribing. Tasted great, especially when combined with full fat yoghurt, milk & almond butter. HEALTH WARNING - soon after using this product, my periodic blood test showed a significant decline in kidney function. 3 months later, similar results. My consultant mentioned that these results are common in younger people who take supplementary weight/muscle gain products. I immediately cancelled my subscription to this product. Fast forward to today and after another blood test my kidney function has returned to normal. My review score reflects the product itself, affordability, and how well it ... MoreI had been underweight my entire life, really struggling to gain weight. This product worked exactly as advertised, helping me gain weight and at a very affordable price when subscribing. Tasted great, especially when combined with full fat yoghurt, milk & almond butter. HEALTH WARNING - soon after using this product, my periodic blood test showed a significant decline in kidney function. 3 months later, similar results. My consultant mentioned that these results are common in younger people who take supplementary weight/muscle gain products. I immediately cancelled my subscription to this product. Fast forward to today and after another blood test my kidney function has returned to normal. My review score reflects the product itself, affordability, and how well it serves its purpose. However, please be aware of potential longer term health consequences.
| Product dimensions | 21 x 21 x 27 cm; 2.72 Kilograms |
| Country of origin | USA |
| Item form | Powder |
| Flavour | Vanilla |
| Product benefits | Muscle Growth |