---
product_id: 253312791
title: "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 - Vanilla, 12 Lbs (5.44 KG)"
brand: "optimum nutrition"
price: "R5441"
currency: ZAR
in_stock: true
category: "Optimum Nutrition"
url: https://www.desertcart.co.za/products/253312791-optimum-nutrition-on-serious-mass-high-protein-muscle-building-weight
store_origin: ZA
region: South Africa
---

# 25 Vitamins & Minerals + Creatine boost 50g Blended Protein for muscle growth 1,250 Calories per serving 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 - Vanilla, 12 Lbs (5.44 KG)

**Brand:** optimum nutrition
**Price:** R5441
**Availability:** ✅ In Stock

## Summary

> 💥 Bulk up smarter, not harder with Serious Mass!

## Quick Answers

- **What is this?** 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 - Vanilla, 12 Lbs (5.44 KG) by optimum nutrition
- **How much does it cost?** R5441 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/253312791-optimum-nutrition-on-serious-mass-high-protein-muscle-building-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

- • **Clean Carb Surge:** Over 250g of carbs with zero added sugar to keep your energy clean and consistent.
- • **Calorie Powerhouse:** Fuel your gains with a massive 1,250 calories per serving—because size matters.
- • **Recovery Amplifiers:** Enhanced with Creatine, Glutamine, and Glutamic Acid for faster muscle repair and endurance.
- • **Immune-Boosting Formula:** Vitamin C, Zinc, and Vitamin D support your immune system while you train hard.
- • **Protein-Packed Performance:** 50 grams of premium blended protein to accelerate muscle recovery and growth.

## Overview

Optimum Nutrition Serious Mass is a high-calorie, high-protein weight gainer designed for serious muscle builders. Each serving delivers 1,250 calories, 50 grams of blended protein, and over 250 grams of carbohydrates with no added sugar, complemented by 25 essential vitamins and minerals plus creatine and amino acids to support muscle recovery and immune health. Ideal for post-workout or between meals, it’s the go-to formula for millennials committed to maximizing gains and maintaining peak performance.

## Description

Buy 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 - Vanilla, 12 Lbs (5.44 KG) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

## Features

- Adding Calories Has Never Been This Easy or Tasted So Good
- 1,250 Calories
- 50 Grams of Blended Protein & 25 Vitamins and Essential Minerals
- Over 250 Grams of Carbohydrates with NO ADDED SUGAR
- Creatine, Glutamine and Glutamic Acid

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000GIPJ02 |
| Age Range Description | Adult |
| Allergen Information | Eggs, Milk, Soy, Wheat |
| Best Sellers Rank | #1,058 in Health ( See Top 100 in Health ) #382 in Multiple Vitamin-Mineral Combination Supplements |
| Brand | Optimum Nutrition |
| Brand Name | Optimum Nutrition |
| Caffeine Content Description | Caffeine Free |
| Customer Reviews | 4.4 out of 5 stars 19,483 Reviews |
| Diet Type | Vegetarian |
| Diet type | Vegetarian |
| Flavor | Vanilla |
| Flavour | Vanilla |
| Item Dimensions | 39 x 29 x 14 centimeters |
| Item Weight | 192 Ounces |
| Item weight | 192 Ounces |
| Manufacturer | Glanbia Performance Nutrition |
| Manufacturer Part Number | 1031920 |
| Material Type Free | Finished Product |
| Material type free | Finished Product |
| Model Name | Optimum Nutrition Serious Mass Weight Gainer Protein Powder Vitamin C Zinc and Vitamin D for Immune Support |
| Model Number | 1031920 |
| Net Content Volume | 13.88 Liters |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Benefits | High Calorie, High Protein formula for Muscle and Mass Gain Support |
| Protein Source | Whey |
| Recommended Uses For Product | Post-Workout |
| Servings per container | 16 |
| Supplement Formulation | Multi-Supplement |
| Total Servings Per Container | 16 |
| UPC | 748927023824 |
| Unit Count | 5440 Grams |

## Product Details

- **Brand:** Optimum Nutrition
- **Flavour:** Vanilla
- **Item weight:** 192 Ounces
- **Material type free:** Finished Product
- **Servings per container:** 16

## Images

![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 - Vanilla, 12 Lbs (5.44 KG) - Image 1](https://m.media-amazon.com/images/I/510JUtwvEyL.jpg)

## Available Options

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

## Questions & Answers

**Q: When the date of expiry?**
A: 1 year ahead is the minimum requirement of all nutritional stuff in Amazone

**Q: Is there a version of this product without creatine?**
A: Hi,
This product contains Creatine. There is no version of this product without creatine.

**Q: What is the expiry date ?**
A: October/2022

**Q: What is the date if expiry?**
A: The date of expiry is after 1 year and a half

## Frequently Bought Together

- Optimum Nutrition Serious Mass, Weight Gainer Protein Powder with Creatine
- Nutricost Creatine Monohydrate Micronized Powder 500G, 5000mg Per Serv (5g) - 100 Servings, 17.9 Oz
- VOLTRX Premium Electric Protein Shaker Bottle, Made with Tritan - BPA Free - 24 oz Vortex Portable Mixer Cup/USB Rechargeable Shaker Cups for Protein Shakes

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**Shop now:** [https://www.desertcart.co.za/products/253312791-optimum-nutrition-on-serious-mass-high-protein-muscle-building-weight](https://www.desertcart.co.za/products/253312791-optimum-nutrition-on-serious-mass-high-protein-muscle-building-weight)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-08*