Optimum Nutrition Serious Mass supports , weight gain, muscle building, Banana flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Banana flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Chocolate flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Chocolate flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Chocolate flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Chocolate Peanut Butter flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Chocolate Peanut Butter flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Strawberry flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Strawberry flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Vanilla flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Vanilla flavor, 50g protein per serving
Optimum Nutrition Serious Mass supports , weight gain, muscle building, Vanilla flavor, 50g protein per serving
Optimum Nutrition Serious Mass protein powder, 6 lb container, banana flavor, for muscle gain and weight gain
Optimum Nutrition Serious Mass protein powder, 6lb container, chocolate flavor, for weight gain and muscle building
Optimum Nutrition Serious Mass protein powder, 6lb container, vanilla flavor, for weight gain and muscle building

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。
  • 1回分あたり1,250カロリー
  • 1回分あたりタンパク質が50gが含まれます。
  • 1回分あたり炭水化物が252～254g含まれます。
  • ¥10,000 以上のご注文で 無料配送
  • 小計が16,500円を超える場合は、複数回に分けてのご注文をおすすめします（16,500円を超えると関税の課税対象となり、受取時に別途お支払いいただくことになりますのでご了承ください）
フレーバー:

フレーバー
サイズ:

サイズ
セール価格¥8,380
Price per serving: ¥1,048

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" — Hector Z.
  • "Mass serious weight gainer helped me to gain some extra kgs I highly recommend this for people who wants to gain weight" — Anton
  • "Best weight gainer on market" — Miracles

Reviews

"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!!!"

— MOISES (5/5)

"Good price point. Mixes well and tastes good."

— Allen (5/5)

"Very bad customer service don't answer me"

— Skalar (1/5)

"Arrive fast"

— richard (5/5)

"Me gusto"

— Magali (4/5)

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."

— David J. (4/5)

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."

— Anna R. (4/5)

"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."

— Benny (5/5)

I didn't like the flavor

"I didn't like the flavor"

— Abdulrahman A. (3/5)

I bought this for my

"I bought this for my nephew, a sumo wrestler, and he says it's very easy to drink."

— TATSUYA I. (5/5)

Q&A

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