---
product_id: 415488172
title: "Optimum Nutrition (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 1 kg (Chocolate) with Vitamins and Minerals, Suitable for Vegetarians"
brand: "optimum nutrition"
price: "฿3188"
currency: THB
in_stock: true
reviews_count: 8
category: "Optimum Nutrition"
url: https://www.desertcart.co.th/products/415488172-optimum-nutrition-on-serious-mass-high-protein-high-calorie-weight
store_origin: TH
region: Thailand
---

# 24 Essential Vitamins & Minerals 50g High-Quality Protein 1200+ Calories per serving Optimum Nutrition (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 1 kg (Chocolate) with Vitamins and Minerals, Suitable for Vegetarians

**Brand:** optimum nutrition
**Price:** ฿3188
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate Your Bulk Game — Because Gains Wait for No One!

## Quick Answers

- **What is this?** Optimum Nutrition (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 1 kg (Chocolate) with Vitamins and Minerals, Suitable for Vegetarians by optimum nutrition
- **How much does it cost?** ฿3188 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/415488172-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 with fast metabolisms.
- • **Nutrient-Rich Formula:** Packed with 24 vitamins, minerals, creatine & glutamine to support overall health and performance.
- • **Versatile & Convenient:** Blend with fruits, nuts, or peanut butter for a personalized calorie-dense shake anytime post-workout or between meals.
- • **Certified Quality & Purity:** Manufactured in a world-class facility with NSF, FSSC 22000 & OHSAS 18001 certifications for your peace of mind.
- • **Muscle Recovery Powerhouse:** 50 grams of premium whey protein isolate & concentrate to accelerate muscle repair and growth.

## Overview

Optimum Nutrition Serious Mass is a vegetarian-friendly, high-calorie weight gainer delivering over 1200 calories and 50 grams of protein per serving. Designed for those struggling to gain mass, it combines premium European whey proteins with 24 essential vitamins and minerals, creatine, and glutamine. Produced in a certified world-class facility in India, this formula supports muscle recovery and healthy weight gain when paired with resistance training and a balanced diet.

## 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 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
- What's in Serious Mass: 1200+ Calories, 50 Grams of Protein and over 250 Grams of Carbohydrates per Serving with 24 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
- How to Use: Prepare using an electric blender. Add fresh or frozen fruits, peanut butter, nuts & other calorie dense foods to boost your weight gain potential.
- Note - Product should be tightly sealed after each and every use. Please store in a cool and dry place. Avoid direct sunlight
- Our Ingredients like Whey protein Isolate and Whey protein concentrate are imported from Europe. Blending is done at a world class facility in India carrying the highest quality and safety certifications like NSF, FSSC 22000 and OHSAS 18001.
- Country of Origin: India (Product designed in the USA)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09QXTRNW6 |
| ASIN  | B09QXTRNW6 |
| Best Sellers Rank | #1,119 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #2 in Mass & Weight Gainers |
| Country of Origin | India |
| Country of Origin  | India |
| Customer Reviews | 3.9 3.9 out of 5 stars (3,200) |
| Date First Available  | 21 January 2022 |
| Generic Name | Weight Gain Powder |
| Generic Name  | Weight Gain Powder |
| Included Components | OPTIMUM NUTRITION |
| Included Components  | OPTIMUM NUTRITION |
| Item Dimensions LxWxH | 25 x 15 x 15 Centimeters |
| Item Dimensions LxWxH  | 25 x 15 x 15 Centimeters |
| Item Weight | 750 g |
| Item Weight  | 750 g |
| Item model number | 1115238 |
| Item model number  | 1115238 |
| 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  | 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. |
| Net Quantity | 1000.0 Grams |
| Net Quantity  | 1000.0 Grams |
| Packer | Tirupati Wellness Pvt. Ltd. Surajpur, Nahan Road, Paonta Sahib, Dist. Sirmour-173025 (HP), India |
| Packer  | Tirupati Wellness Pvt. Ltd. Surajpur, Nahan Road, Paonta Sahib, Dist. Sirmour-173025 (HP), India |
| Product Dimensions | 25 x 15 x 15 cm; 750 g |
| Product Dimensions  | 25 x 15 x 15 cm; 750 g |

## Product Details

- **Brand:** Optimum Nutrition
- **Diet Type:** Vegetarian
- **Flavour:** Chocolate
- **Item Form:** Powder
- **Item Weight:** 750 Grams
- **Item dimensions L x W x H:** 25 x 15 x 15 Centimeters
- **Net Quantity:** 1000.0 Grams
- **Primary Supplement Type:** vitamins
- **Product Benefits:** Muscle Growth
- **Special Ingredients:** L-Glutamine

## Images

![Optimum Nutrition (ON) Serious Mass High Protein High Calorie Weight Gainer Powder - 1 kg (Chocolate) with Vitamins and Minerals, Suitable for Vegetarians - Image 1](https://m.media-amazon.com/images/I/71uXZbooOeL.jpg)

## Available Options

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

## Questions & Answers

**Q: Which importer???**
A: Touchstone retail

**Q: Serious mass vegetarian and non vegetarian,  both are original?**
A: Yes...

**Q: 17 age wale le sakte hai**
A: Yeah

**Q: I have ordered vanilla flavour and u sent chocolate flavour....not fair**
A: Chocolate is far better than vanilla:

## 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 - 1 kg (Chocolate) with Vitamins and Minerals, Suitable for Vegetarians
- 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 High Protein High Calorie Weight Gainer Powder - 3 kg (Chocolate) with Vitamins and Minerals, Vegetarian

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-05*