"Well delivered, A must have supplement if you want to gain weight, bulking season, or if you are the skinny type body and struggle gaining weight. This a must have! I recommend Vanilla because is really versatile and you can make all kind of shakes!!!"















シリアス マス
シリアス マスはスプーン2杯で1,250カロリーとタンパク質50gを提供します。ワークアウト後と食間に最適な、目標レベルをアップするシェイク用パウダーです。
栄養成分表示
栄養成分表示
シリアスマス

Overall rating: 4.7055216 / 5 from 163 reviews.
AI Generated Review Summary
Serious Mass by Optimum Nutrition is highly regarded for its effectiveness in muscle building and weight gain, supported by its high-calorie content, quality protein, and great taste. Customers appreciate its ability to fuel intense workouts and its delicious flavors, making it a top choice for athletes aiming for serious muscle and performance goals.
Summary topics
- Muscle Gains: 14%
- Product Quality: 5%
- Product Taste: 35%
- Weight Gain: 9%
Review topics: [results, weight, quality, taste, sugar, works, difference, gains, protein, mixes, calories, order, guy, mass, shaker, serious mass, supplement, delivery, vanilla, option, chocolate, milkshake, price, strawberry].
Review highlights
- "Good product overall it has a good flavor it is not too heavy to drink and it gives you gains super fast" —
- "Mass serious weight gainer helped me to gain some extra kgs I highly recommend this for people who wants to gain weight" —
- "Best weight gainer on market" —
Reviews
"Good price point. Mixes well and tastes good."
"Very bad customer service don't answer me"
"Arrive fast"
"Me gusto"
It’s usually 5 stars but
"It’s usually 5 stars but this last order came with the new Velcro seal package and the flavor just doesn’t seem quite right. I liked the old ziplock style seal better, it stayed air tight. This has been my go to for over 3 years and the flavor just seems off. Still tastes great but it’s usually very consistent."
Wish there wasn't artifical coloring
"Wish there wasn't artifical coloring added. Banana flavor is surprisingly good and not overly artificial tasting. Does the job of giving extra calories to an adult with a very active metabolism in our household. Will likely order again unless we can figure out a cheaper diy mix. Even though we are only doing half sized servings, it still goes fast."
"Absolutely love this, taste is great and I feel very energized during my workouts and after as well, went from not having enough energry and feeling sluggish to wide awake and ready to go. No crash afterwards as well. 10/10 would recommend, definitely getting this again."
I didn't like the flavor
"I didn't like the flavor"
I bought this for my
"I bought this for my nephew, a sumo wrestler, and he says it's very easy to drink."
