---
product_id: 304696514
title: "(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: "€ 238.99"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/304696514-on-serious-mass-high-protein-muscle-building-and-weight-gainer
store_origin: HR
region: Croatia
---

# 250g+ Carbs with zero added sugar 50g Blended Protein for muscle growth 1,250 Calories per serving (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:** € 238.99
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** (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?** € 238.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/304696514-on-serious-mass-high-protein-muscle-building-and-weight-gainer)

## 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

- • **Protein Punch:** 50 grams of premium blended protein to accelerate muscle recovery and growth.
- • **Clean Carb Surge:** Over 250 grams of carbs with NO added sugar—energy that’s pure and sustained.
- • **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.
- • **Advanced Muscle Support:** Includes Creatine, Glutamine & Glutamic Acid for next-level performance and recovery.

## Overview

Optimum Nutrition Serious Mass is a high-calorie weight gainer powder delivering 1,250 calories, 50 grams of blended protein, and over 250 grams of carbohydrates per serving. Enhanced with 25 vitamins and minerals plus creatine and glutamine, it supports muscle growth, recovery, and immune health—perfect for professionals serious about leveling up their physique.

## Description

(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)

## 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 |
|---------------|-------|
| Product Name | HEALTH_PERSONAL_CARE |
| Weight | 0.54 Kilograms |
| Volume | 0.54 Milliliters |
| Units | 5440 Grams |
| Country of origin | us |
| Brand | Optimum Nutrition |
| Format | Powder |
| Age Range Description | Adult |
| Serving Size | 2 scoops, 2 scoops |

## Product Details

- **Brand:** Optimum Nutrition
- **Flavour:** Banana
- **Servings per container:** 16
- **Item weight:** 5.44 Kilograms
- **Material type free:** Finished Product

## Images

![(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 **Size, Flavor** options.

## 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 Croatia*
*Store origin: HR*
*Last updated: 2026-07-11*