---
product_id: 399895445
title: "OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian"
brand: "optimum nutrition"
price: "¥21856"
currency: JPY
in_stock: true
reviews_count: 8
category: "Optimum Nutrition"
url: https://www.desertcart.jp/products/399895445-optimum-nutrition-on-serious-mass-high-protein-high-calorie-weight
store_origin: JP
region: Japan
---

# 250g+ Carbs for energy surge 50g High-Quality Protein 1200+ Calories per serving OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian

**Brand:** optimum nutrition
**Price:** ¥21856
**Availability:** ✅ In Stock

## Summary

> 🚀 Bulk Up or Miss Out: The Ultimate Weight Gainer for Serious Achievers

## Quick Answers

- **What is this?** OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian by optimum nutrition
- **How much does it cost?** ¥21856 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/399895445-optimum-nutrition-on-serious-mass-high-protein-high-calorie-weight)

## Best For

- optimum nutrition enthusiasts

## Why This Product

- Trusted optimum nutrition brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive Calorie Boost:** Fuel your gains with 1200+ calories per 2-scoop serving—perfect for those who burn it fast.
- • **Vegetarian & Authentic:** 100% vegetarian formula with sealed purity assurance—join the elite who trust only the best.
- • **Carb-Loaded Energy Surge:** Over 250 grams of carbohydrates to keep your energy levels sky-high and support intense training.
- • **Complete Nutrient Spectrum:** 23+ essential vitamins & minerals plus creatine and glutamine for holistic muscle and health support.
- • **Protein-Powered Muscle Recovery:** 50 grams of premium protein to rebuild and grow muscle after every workout.

## Overview

Optimum Nutrition Serious Mass is a top-tier vegetarian weight gainer powder delivering 1200+ calories, 50g protein, and 250g+ carbs per serving, enriched with 23+ vitamins, minerals, creatine, and glutamine. Designed for fast metabolisms and intense training, it supports muscle growth and recovery with guaranteed purity and quality.

## Description

SERIOUS MASS is the ultimate weight gain and muscle building formula. With +1200 calories per 2-scoop serving and 50 grams of protein to support muscle recovery, this powder makes the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gain goals.

Review: Who said it’s fake and bad product? - Some in the review says that it was a fake product or it contained worms, however it’s totally not true. So I got the parcel today within the expected delivery date and checked the authentication. It found that it was 100% authentic product and the quality of the powder is very good. So, it’s up to you which reviews you want to trust, however don’t just blindly believe whatever you see. Because I was the one who was disappointed with buying this from this seller after seeing the low stared reviews, but the product I got was true one and the quality is good tho.
Review: Dr Arjun - its a good product but inside scoop missing i want that scoop

## Features

- What is Serious Mass: Suitable for Vegetarians, Optimum Nutrition Serious Mass is a high calorie weight gainer which is also high in protein and when taken over time with regular resistance exercise and a balanced diet can help you gain mass and muscle
- Who Needs Serious Mass: People with very active metabolism that struggle to gain weight; Athletes or anyone who has extremely high energy needs that can-not be met only with food
- What's in Serious Mass: 1200+ Calories, 50 Grams of quality Protein and over 250 Grams of Carbohydrates per Serving with 23+ Vitamins & Minerals, Creatine & Glutamine
- When to Consume: Use post-workout and/or between meals to add calories, carbs and protein to your healthy, balanced diet
- Purity - The neck of the tub is sealed with an induction vented liner inside the cap. The product has a plastic shrink wrap seal around the cap (outside) for protection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Q3HFLPY |
| Age Range Description | Adult |
| Allergen Information | Milk, Soy |
| Best Sellers Rank | #1,023 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #1 in Mass & Weight Gainers |
| Brand | Optimum Nutrition |
| Colour | Multicolour |
| Container Type | Jar |
| Country of Origin | India |
| Customer Reviews | 3.9 out of 5 stars 3,125 Reviews |
| Diet Type | Vegetarian |
| Dosage Form | Powder |
| Dose Release Method | Osmotic Release |
| Flavor | Chocolate |
| Flavour | Chocolate |
| Included Components | OPTIMUM NUTRITION |
| Item Dimensions | 20.5 x 20.5 x 26.3 Centimeters |
| Item Form | Powder |
| Item Height | 26.3 Centimeters |
| Item Nype Name | Weight Gain Powder |
| Item Weight | 3000 Grams |
| Manufacturer | Manufactured for OPTIMUM NUTRITION, INC. By Tirupati Wellness Pvt. Ltd., Manufactured for OPTIMUM NUTRITION, INC. By Tirupati Wellness Pvt. Ltd. Surajpur, Nahan Road, Paonta Sahib, Dist. Sirmour-173025 (HP), India. |
| Manufacturer Contact Information | Manufactured for OPTIMUM NUTRITION, INC. By Tirupati Wellness Pvt. Ltd. Surajpur, Nahan Road, Paonta Sahib, Dist. Sirmour-173025 (HP), India. |
| Material Features | Vegetarian |
| Model Name | av2023-OPTIMUM NUTRITION-vitamins minerals high protein high calorie weight gainer with gm creatine-77d22382 |
| Net Quantity | 3000.0 Grams |
| Number of Items | 1 |
| Packer Contact Information | Tirupati Wellness Pvt. Ltd. Surajpur, Nahan Road, Paonta Sahib, Dist. Sirmour-173025 (HP), India |
| Primary Supplement Type | Maltodextrin, Whey, Casein |
| Product Benefits | Muscle Growth |
| Special Ingredients | L-Glutamine |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 9.0 |
| UPC | 748927065763 |
| Unit Count | 3000.0 Grams |
| Usage | Strength Training, Supports Performance, Supports Weight Gain Goals |

## Product Details

- **Brand:** Optimum Nutrition
- **Flavour:** Chocolate
- **Primary Supplement Type:** Maltodextrin, Whey, Casein
- **Net Quantity:** 3000.0 Grams
- **Item Form:** Powder
- **Item Weight:** 3000 Grams
- **Item dimensions L x W x H:** 20.5 x 20.5 x 26.3 Centimeters
- **Special Ingredients:** L-Glutamine
- **Diet Type:** Vegetarian
- **Product Benefits:** Muscle Growth

## Images

![OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian - Image 1](https://m.media-amazon.com/images/I/61DQLVMdwsL.jpg)

## Available Options

This product comes in different **Size, Flavor** options.

## Questions & Answers

**Q: Hello sir my weight is 58 and I want my waight is 65 so which products help  me to my waight gain and how many scoop eat please tell me**
A: Dear buyer, 1,250 calories per serving mixed with water and 1,640 calories when blended into low-fat milk. 
So one Scoop per day will be natural to help you. Best consumption b/w meals or before going to sleep. 
Please scan the Barcode comes on the Product Body to check authenticity of the product. 
Buy genuine from Nutrition Planet Pvt Ltd

**Q: is the product geniune??**
A: Yes

**Q: Is this per-workout or post-workout**
A: Firstly, its a dietary supplement. So take it between meals and after workout. A good diet and any workout is must with this product . Otherwise it goes waste.

**Q: Manufacturer date**
A: Dear Customer, Because this question is linked to a product sold by and shipped by Amazon Seller, you are assured of receiving Optimum Nutrition products that are well within 'best by' dating. This product has a 2-year shelf life from the date of manufacture.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Who said it’s fake and bad product?
*by S***H on 4 November 2024*

Some in the review says that it was a fake product or it contained worms, however it’s totally not true. So I got the parcel today within the expected delivery date and checked the authentication. It found that it was 100% authentic product and the quality of the powder is very good. So, it’s up to you which reviews you want to trust, however don’t just blindly believe whatever you see. Because I was the one who was disappointed with buying this from this seller after seeing the low stared reviews, but the product I got was true one and the quality is good tho.

### ⭐⭐⭐⭐ Dr Arjun
*by P***N on 2 December 2025*

its a good product but inside scoop missing i want that scoop

### ⭐⭐⭐⭐⭐ Effective Mass Gainer With Noticeable Results and No Side Effects
*by B***R on 24 December 2025*

I purchased the 3 kg pack of Optimum Nutrition Mass Gainer and finished the entire pack before writing this review. Over the course of using it, I gained around 2.5 kg in weight, which is a good and steady result. The product mixed well, was easy to consume, and I did not experience any side effects during or after use. Results may vary depending on diet and workout routine, but in my case it worked effectively as a support supplement for weight gain.

## Frequently Bought Together

- OPTIMUM NUTRITION (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian
- Optimum Nutrition (ON) Micronized Creatine Powder - 100 Gram, 33 Serves, 3g of 100% Creatine Monohydrate per serve, Supports Athletic Performance & Power, Unflavored.
- OPTIMUM NUTRITION (ON) Serious Mass Gainer powder (Veg) - Pack of 5 kg (Chocolate), Vitamins & Minerals, High Protein High Calorie Weight Gainer with 3gm Creatine

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*