---
product_id: 123565155
title: "Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg)"
brand: "reflex"
price: "B/.464"
currency: PAB
in_stock: true
url: https://www.desertcart.com.pa/products/123565155-reflex-nutrition-one-stop-xtreme-serious-mass-gainer-all-in
store_origin: PA
region: Panama
---

# 5,000mg Creatine Boost 55g Protein Power 10.3g BCAAs for Recovery Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg)

**Brand:** reflex
**Price:** B/.464
**Availability:** ✅ In Stock

## Summary

> 💥 Fuel Your Gains, Own Your Strength!

## Quick Answers

- **What is this?** Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg) by reflex
- **How much does it cost?** B/.464 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/123565155-reflex-nutrition-one-stop-xtreme-serious-mass-gainer-all-in)

## Best For

- reflex enthusiasts

## Why This Product

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

## Key Features

- • **BCAA Recovery Formula:** 10.3g BCAAs accelerate muscle recovery and reduce fatigue post-exercise.
- • **All-in-One Muscle Fuel:** Simplify your gains with one potent shake replacing multiple supplements.
- • **Clean & Certified Quality:** Hormone-free, zero added sugars, Halal certified, and made in an Informed Sport registered facility.
- • **High-Impact Protein Punch:** 55g of premium grass-fed whey protein to maximize muscle growth and repair.
- • **Creatine-Powered Performance:** 5,000mg creatine enhances strength and endurance for intense workouts.

## Overview

Nutrition One Stop® Xtreme is a premium all-in-one mass gainer protein powder delivering 55g of grass-fed whey protein, 10.3g BCAAs, and 5,000mg creatine per serving. Designed for serious muscle growth, it supports strength, endurance, and recovery with added digestive enzymes and essential nutrients. Clean, hormone-free, and Halal certified, it’s the ultimate shake for millennial professionals who demand peak performance and simplicity in their supplement routine.

## Description

Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg)

## Features

- All-in-One Weight Gainer To Simplify Your Supplement Routine: One Stop Xtreme has been formulated to replace the use of numerous supplements, allowing you to take only one protein shake to support muscle growth alongside a balanced healthy diet
- High-performing Weight Gain Shake: One Stop Extreme high protein powder delivers a hit of protein, creatine, BCAAs and other beneficial nutrients to bodybuilders looking to make gains - contributing to the growth and maintenance of muscle mass
- Boosting Stregth and Endurance: Reflex mass gainer protein powder contains creatine, that increases physical performance in successive bursts of short-term, high intensity exercise - With LAB2PRO friendly bacteria and Digezyme digestive enzymes
- Nutritional Excellence: contains L-Leucine, Beta Alanine, Betaine Anhydrous and Taurine, along with essential vitamins and minerals aiding the maintenance of normal protein synthesis, function of the immune system and testosterone production
- Premium Ingredients: Reflex only uses whey protein sourced from grass-fed cows, ensuring a high-quality weight gain protein powder that mixes well, with a smooth texture and a delicious taste
- Produced in an Informed Sport Registered Facility: Suitable for vegetarians and Halal certified - Hormone-free, zero added sugars, artificial colors or soy protein, assuring a conscientious choice of food supplements for weight gain

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Name | HEALTH_PERSONAL_CARE |
| Allergen Information | Contains: Barley, Egg may contain, Milk, Oat, Soy may contain, Wheat |
| Weight | 4350 Kilograms |
| Volume | 4350 Millilitres |
| Units | 4350.0 Grams |
| Storage Instructions | In a cool, dry place |
| Manufacturer contact | Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK |
| Country of origin | United Kingdom |
| Brand | Reflex |
| Format | Powder |
| Age Range Description | Adult |
| Country of origin | United Kingdom |
| Serving Size | 290 g |
| Energy (kcal) | 365.43 kcal |
| Protein | 37.931034482759 g |

## Product Details

- **Brand:** Reflex
- **Flavour:** Cookies & Cream
- **Item weight:** 4350 Grams
- **Material Type Free:** Sugar Free
- **Diet type:** Halal
- **Product benefits:** Muscle Growth
- **Protein source:** Whey
- **Unit count:** 4350.0 Grams
- **Recommended uses for product:** Post-Workout
- **Number of items:** 1

## Images

![Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg) - Image 1](https://m.media-amazon.com/images/I/71PZRm29eJL.jpg)

## Available Options

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

## Frequently Bought Together

- Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Cookies & Cream, 4.35kg)
- Reflex Nutrition Reflex Pre Workout Powder 3000 mg Citrulline Malate 1600 mg Beta-Alanine 125 mg Caffeine Plus B Vitamins and Electrolytes (Fruit Punch) (300 g)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-02-12*