---
product_id: 304696514
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 - Banana, 12 Lbs (5.44 KG)"
brand: "optimum nutrition"
price: "R5750"
currency: ZAR
in_stock: true
reviews_count: 13
url: https://www.desertcart.co.za/products/304696514-optimum-nutrition-on-serious-mass-high-protein-muscle-building-weight
store_origin: ZA
region: South Africa
---

# 250g+ Carbs, No Added Sugar 50g Blended Protein 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 - Banana, 12 Lbs (5.44 KG)

**Brand:** optimum nutrition
**Price:** R5750
**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 - Banana, 12 Lbs (5.44 KG) by optimum nutrition
- **How much does it cost?** R5750 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/304696514-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 250 grams of carbohydrates with zero added sugar for sustained energy.
- • **Calorie Powerhouse:** Fuel your gains with a massive 1,250 calories per serving—because size matters.
- • **Immune Boost Formula:** Packed with Vitamin C, Zinc, and Vitamin D to keep you strong inside and out.
- • **Muscle Recovery Master:** 50 grams of premium blended protein to accelerate muscle repair and growth.
- • **Elite Performance Blend:** Includes Creatine, Glutamine, and 25 essential vitamins & minerals for next-level results.

## Overview

Optimum Nutrition Serious Mass is a high-calorie, high-protein weight gainer designed for adults aiming to build muscle and increase mass efficiently. Each 12 lb container delivers 1,250 calories, 50 grams of blended protein, and over 250 grams of carbohydrates per serving, enhanced with creatine, glutamine, and 25 essential vitamins and minerals including immune-supporting Vitamin C, Zinc, and Vitamin D. Perfect for post-workout recovery and between-meal nutrition, this banana-flavored formula supports serious muscle growth without added sugars.

## Description

Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized 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 pack on the pounds and help you develop the physique you’ve always wanted.

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B002LMMREC |
| Is Discontinued By Manufacturer | No |
| Item Model Number | SERIOUS MASS BANANA 12lbs |
| Manufacturer | Optimum Nutrition |
| Product Dimensions | 8 x 4 x 6 cm; 5.44 kg |

## Product Details

- **Brand:** Optimum Nutrition
- **Flavour:** Banana
- **Item weight:** 5.44 Kilograms
- **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 - Banana, 12 Lbs (5.44 KG) - Image 1](https://m.media-amazon.com/images/I/619w3kQLEBL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 2nd time buyer!
*by  on Reviewed in the United Arab Emirates 25 April 2024*

Effective!!! Try it now!

### ⭐⭐⭐⭐⭐ Genuine
*by  on Reviewed in the United Arab Emirates 9 January 2020*

Its a genuine product.

### ⭐⭐⭐⭐ Will recommend
*by  on Reviewed in the United Arab Emirates 3 December 2025*

It works superbly

## Frequently Bought Together

- 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 - Banana, 12 Lbs (5.44 KG)
- Cellucor C4 Original Pre Workout Powder Energy Drink Supplement For Men & Women with Creatine, Caffeine, Nitric Oxide Booster, Citrulline & Beta Alanine Orange Burst - 60 Servings (Packaging May Vary)
- Optimum Nutrition (ON) Micronized Creatine Monohydrate Powder for Muscle Building Support - Unflavored, 300 Grams, 60 Servings - Package May Vary

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---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-27*