Build Serious Size With Every Shake
1,250 calories and 50g protein per serving trusted by lifters for decades.
From Hardgainer to Growing Athlete
Drag the slider to compare. Realistic scenes show the difference when you finally hit a true caloric surplus with consistent daily shakes.
Serious lifters share their size results
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
Marcus T.
Finally broke my plateau
Added two scoops daily after training. Hit 1,250 calories easy and put on eight pounds in six weeks.
Derek L.
Tastes better than expected
Chocolate mixes smooth. I was stuck at 165 for a year. Now 178 and still going up.
Jenna R.
Great for hardgainers like me
Took one serving with breakfast. Carbs kept my energy high through long lifts. Gained five pounds first month.
Tyler K.
Simple way to hit surplus
Whole foods alone never worked. This tub makes the extra 1,250 calories repeatable every day.
Andre M.
Recovery feels faster
50 grams protein plus the carbs helped me train four days straight without feeling wrecked.
Ryan P.
Trusted brand for a reason
Used Optimum Nutrition for years. Serious Mass is the only gainer that actually moved the scale.
Chris B.
Eight pounds in five weeks
Mixed with whole milk. Easy to drink and the numbers on the tub match what I gained.
Sam H.
No more tiny shakes
Standard protein never gave enough calories. This one actually fills the gap I needed.
Luis V.
Consistent daily habit
One tub lasts eight solid days. I just keep the routine and the weight keeps coming.
Matt D.
Energy for heavy sessions
252 grams carbs per serving. My squats went up because I finally had fuel in the tank.
Nicole S.
Helped me stop losing weight
I was dropping pounds from training volume. This shake reversed that fast.
Brandon W.
Visible size in the mirror
Shoulders and back look thicker after six weeks. The calorie count is the real difference.
What Delivers Visible Size Gains
1,250 calories per serving create the surplus needed for real weight gain.
50g protein supports muscle repair after heavy training sessions.
252g carbohydrates fuel workouts and speed up recovery.
8-serving tub makes hitting your daily surplus simple and repeatable.
Chocolate flavor mixes easily so you stay consistent every day.
What Dedicated Lifters Say
4.6 · 5 reviews
Finally broke my plateau
I was eating everything and still stuck at 165. Two shakes a day with this put me at 178 in six weeks. No bloating, just steady gains.
Marcus T.
Powerlifter, Ohio
1,250 calories per serving
30-day money-back guarantee on every tub
Optimum Nutrition Serious Mass
Get it between Saturday, July 18 and Sunday, July 19.
My boyfriend uses it and it really works! With proper maintenance of the diet and regular exercise, extremely useful for gaining mass