---
product_id: 430869783
title: "AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength, Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Cookies & Cream, 13 Servings, 6 SVG"
brand: "gnc"
price: "€ 219.98"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/430869783-amp-mass-xxx-clinically-proven-weight-gainer-protein-powder-improves
store_origin: FI
region: Finland
---

# Clinically proven MyoTOR & BETAPOWER 50g Protein per serving 780 Calories fuel AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength, Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Cookies & Cream, 13 Servings, 6 SVG

**Brand:** gnc
**Price:** € 219.98
**Availability:** ✅ In Stock

## Summary

> 💥 Fuel your gains with clinically proven power — don’t just train, transform!

## Quick Answers

- **What is this?** AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength, Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Cookies & Cream, 13 Servings, 6 SVG by gnc
- **How much does it cost?** € 219.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/430869783-amp-mass-xxx-clinically-proven-weight-gainer-protein-powder-improves)

## 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 Elevated:** BETAPOWER enhances stamina so you can push harder and longer during workouts.
- • **Calorie-Loaded for Gains:** 780 calories per serving to supercharge your mass-building journey without extra meals.
- • **Clean & Tested Confidence:** Banned substance tested against 220+ WADA-listed compounds for safe, elite-level performance.
- • **Power-Packed Protein Punch:** 50g of high-quality protein fuels muscle growth and recovery with every scoop.
- • **Science-Backed Strength Boost:** Clinically proven MyoTOR accelerates strength gains in as little as 2 weeks.

## Overview

GNC AMP Mass XXX is a premium weight gainer protein powder delivering 780 calories and 50g of protein per serving, enhanced with clinically proven MyoTOR and BETAPOWER to boost muscle strength, size, and endurance. Designed for serious athletes and fitness enthusiasts, it supports faster results with fewer sets and is rigorously tested for banned substances, ensuring clean, effective performance.

## Description

AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength, Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Cookies & Cream, 13 Servings, 6 SVG

## 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 |
|---------------|-------|
| Brand | GNC |
| Format | Powder |
| Age Range Description | Adult |

## Product Details

- **Brand:** GNC
- **Flavour:** Cookies and Cream
- **Item weight:** 6.1 Pounds
- **Product benefits:** Mass Gainer Protein
- **Protein source:** Whey

## Images

![AMP Mass XXX, Clinically Proven Weight Gainer Protein Powder, Improves Strength, Size, 780 Calories, 50g Protein, Micronized Amino Acids, Creatine, Betaine, Cookies & Cream, 13 Servings, 6 SVG - Image 1](https://m.media-amazon.com/images/I/71wgmifiPsL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it help you gain weight  ?**
A: it helps a little.  cant rely on it. food helps more obviously.

## 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, Cookies and Cream, 13 Servings, 6
- Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 120 Servings, 600 Grams (Packaging May Vary)
- 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

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-20*