---
product_id: 306749192
title: "GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds"
brand: "gnc"
price: "1098 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Gnc"
url: https://www.desertcart.ro/products/306749192-gnc-amp-mass-xxx-clinically-proven-weight-gainer-protein-powder
store_origin: RO
region: Romania
---

# MyoTOR boosts strength in 2 weeks 50g protein per serving 780 calories fuel GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds

**Brand:** gnc
**Price:** 1098 Lei
**Availability:** ✅ In Stock

## Summary

> 🚀 Fuel your gains, crush your limits, and own your strength.

## Quick Answers

- **What is this?** GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds by gnc
- **How much does it cost?** 1098 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/306749192-gnc-amp-mass-xxx-clinically-proven-weight-gainer-protein-powder)

## Best For

- gnc enthusiasts

## Why This Product

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

## Key Features

- • **Endurance Meets Innovation:** BETAPOWER and creatine combine to elevate stamina and workout performance to new heights.
- • **Power-Packed Protein Punch:** 50g of high-quality protein fuels muscle growth and recovery with every scoop.
- • **Clean & Tested for Champions:** Screened against 220+ banned substances, ensuring safe, elite-level supplementation.
- • **Calorie Surge for Serious Gains:** 780 calories per serving to supercharge your mass-building journey without extra meals.
- • **Clinically Proven Strength Boost:** MyoTOR accelerates muscle strength improvements in as little as 2 weeks—science-backed results.

## Overview

GNC AMP Mass XXX is a clinically proven weight gainer protein powder delivering 780 calories and 50g of protein per serving, enriched with MyoTOR, creatine, and BETAPOWER to boost muscle size, strength, and endurance. Designed for adults seeking serious mass gains, it supports faster strength improvements within 2 weeks and is rigorously tested for banned substances, making it a trusted choice for performance-driven athletes.

## Description

Buy GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Great supplement - This is a great way for me to start my day. Extra protein and carbs to kick off a fulfilled day of work. Taste good and goes down well with milk and helps me keep on weight
Review: Cheaper than the store - Works really well

## Features

- Clinically Proven Gainer: Mass XXX mass gainer combines high-quality protein powder, key nutrients, and science-backed innovations—including MyoTOR, creatine, and BETAPOWER—to fuel proven results and performance
- Increase Mass with 40% Fewer Sets: Delivers 50g of protein, including naturally occurring EAAs, plus carbs, and healthy fats—and it’s clinically proven to help get better results out of workouts
- Improve Muscle Strength in As Early as 2 Weeks: MyoTOR is clinically proven to accelerate improvements in strength with as little as 2 weeks of training and included in every serving of Mass XXX mass gainer
- Improve Stamina: Take resistance training to a new limit with MyoTOR’s clinically studied support for improved muscle endurance and BETAPOWER’s athletic performance benefits
- Banned Substance Tested: Product was tested and monitored for over 220 banned substances on the 2020 World Anti-Doping Agency (WADA) Prohibited list via LGC skip lot testing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B091D1L7K4 |
| Age Range Description | Adult |
| Best Sellers Rank | #35,830 in Health & Household ( See Top 100 in Health & Household ) #23 in Sports Nutrition Weight Gainers |
| Brand | GNC |
| Brand Name | GNC |
| Customer Reviews | 4.6 out of 5 stars 542 Reviews |
| Flavor | Vanilla |
| Item Dimensions | 7.99 x 7.99 x 12.4 inches |
| Item Height | 12.4 inches |
| Item Weight | 6.7 Pounds |
| Manufacturer | GNC |
| Number of Items | 1 |
| Package Type Name | Canister |
| Product Benefits | Supports overall health and wellness by providing essential nutrients and targeted ingredients for daily vitality and specific health needs. Product Benefits Supports overall health and wellness by providing essential nutrients and targeted ingredients for daily vitality and specific health needs. See more |
| Protein Source | Casein, Soy, Whey |
| Recommended Uses For Product | Post-Workout |
| UPC | 048107213763 |
| Unit Count | 96.1 Ounce |

## Product Details

- **Brand:** GNC
- **Flavor:** Vanilla
- **Item Weight:** 6.7 Pounds
- **Product Benefits:** Supports overall health and wellness by providing essential nutrients and targeted ingredients for daily vitality and specific health needs.
- **Protein Source:** Casein, Soy, Whey

## Images

![GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds - Image 1](https://m.media-amazon.com/images/I/71Omq3k6C+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great supplement
*by M***T on October 20, 2025*

This is a great way for me to start my day. Extra protein and carbs to kick off a fulfilled day of work. Taste good and goes down well with milk and helps me keep on weight

### ⭐⭐⭐⭐⭐ Cheaper than the store
*by E***N on November 5, 2025*

Works really well

### ⭐⭐⭐⭐⭐ Protein shake
*by M***X on April 13, 2025*

Great product. Started seeing results in 3 weeks. Does have a lot of calories. Everything you need to bulk up fast.

## Frequently Bought Together

- GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Vanilla, 13 Servings, 6 Pounds
- GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Strawberry, 13 Servings, 6 Pounds
- GNC AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength and Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Chocolate, 13 Servings, 6 Pounds

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-25*