Dear Valued Customer, I hope this message finds you well. We wanted to inform you that Optimum Serious Mass in the 1 kg variant is currently not in production by the company. However, we do have the following options available: Optimum Nutrition (ON) Serious Mass: Chocolate, 12 Lbs (5.44 KG) Optimum Nutrition (ON) Serious Mass: Chocolate, 6lb (2.73 KG) Thank You!

When the date of expiry?

1 year ahead is the minimum requirement of all nutritional stuff in Amazone

Is there a version of this product without creatine?

Hi, This product contains Creatine. There is no version of this product without creatine.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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Optimum Nutrition (ON) Serious Mass: High Protein Muscle Building & Weight Gainer Protein Powder, 50 Grams of Protein, Vitamin C, Zinc And Vitamin D For Immune Support - Chocolate, 6 Lbs (2.72 KG)

Product ID: 249603014

Details

Brand
Optimum
Flavour
Chocolate
Item weight
2.72 Kilograms
Material type free
Finished
Servings per container
8

⚡25 Vitamins & Minerals + Creatine boost

💪50g Blended Protein for muscle recovery

🔥1,250 Calories per serving

451.24 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

💥 Bulk smarter, recover faster, and own your gains with Serious Mass!

CLEAN CARB SURGE - Over 250 grams of carbohydrates with zero added sugar—energy that fuels without the crash.
CALORIE POWERHOUSE - Fuel your gains with a massive 1,250 calories per serving—effortless mass building starts here.
RECOVERY AMPLIFIERS - Enhanced with Creatine, Glutamine, and Glutamic Acid for faster muscle repair and endurance.
IMMUNE BOOSTING FORMULA - Infused with Vitamin C, Zinc, and Vitamin D to keep your defenses strong while you bulk.
PROTEIN PACKED PERFORMANCE - 50 grams of premium blended protein to accelerate muscle recovery and growth post-workout.

Optimum Nutrition Serious Mass is a high-calorie weight gainer delivering 1,250 calories and 50 grams of blended protein per serving, enriched with 25 essential vitamins and minerals plus creatine and glutamine to support muscle growth, recovery, and immune health. Perfect for professionals serious about scaling their physique efficiently.

Reviews

User

Perfect value for money

perfect value for money

11.08.2024

User

Highly recommended

Awesome product

3.05.2025

User

Good product

one of the best muscle building protein

29.03.2026

User

expensive but working

its working but slowly

23.11.2022

User

I need my refund back

It’s fake and how come I can’t return it

22.08.2025

User

Value for money

Product is original. Chocolate flavour is just ok.I hope the result will be good.

30.12.2023

User

منتج جيد لمن يشرب الكثير من الماء

اصبت بحصى الكلى و قد كان هو السبب ولكن انا من لم يكن يشرب ما يكفي من الماء

10.04.2023

User

منتج جيد اصلى

شكرا لامازون

24.11.2024

User

انصح بالشراء

اشتريته أربع مرات ممتاز

17.08.2025

User

Good

2.03.2023

User

Super Produkte

Super

18.11.2020

User

Muy rico

Sabe a cola cao y está muy rico no como otras marcas que es difícil de tomar

22.10.2025

User

شكرا

14.07.2026

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451.24 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Asin	B06XH28C1K
Country Of Origin	USA
Is Discontinued By Manufacturer	Yes
Item Model Number	SERIOUS MASS CHOCOLATE 6lbs
Manufacturer	Optimum Nutrition
Product Dimensions	8 x 4 x 6 cm; 272.1 g

Optimum Nutrition (ON) Serious Mass: High Protein Muscle Building & Weight Gainer Protein Powder, 50 Grams of Protein, Vitamin C, Zinc And Vitamin D For Immune Support - Chocolate, 6 Lbs (2.72 KG)

Details

Details

Description

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Reviews

Common Questions