---
product_id: 429215613
title: "Matrix Sustained‑Release Protein Powder Blend, Milk Chocolate 5 lb"
brand: "syntrax"
price: "€ 254.06"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/429215613-matrix-sustained-release-protein-powder-blend-milk-chocolate-5-lb
store_origin: HR
region: Croatia
---

# Sustained-release protein delivery Multi-source protein complex rBST-free, grass-fed whey Matrix Sustained‑Release Protein Powder Blend, Milk Chocolate 5 lb

**Brand:** syntrax
**Price:** € 254.06
**Availability:** ✅ In Stock

## Summary

> 💪 Elevate your gains with the protein blend that works as hard as you do!

## Quick Answers

- **What is this?** Matrix Sustained‑Release Protein Powder Blend, Milk Chocolate 5 lb by syntrax
- **How much does it cost?** € 254.06 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/429215613-matrix-sustained-release-protein-powder-blend-milk-chocolate-5-lb)

## Best For

- syntrax enthusiasts

## Why This Product

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

## Key Features

- • **Instant Mixability:** Ultra-instantized formula dissolves effortlessly with just a spoon—no blender needed
- • **All-Day Muscle Fuel:** Advanced sustained-release blend keeps amino acids flowing for hours
- • **Lean & Low-Carb Power:** Zero sugar and low carbs to fuel lean muscle without the extra bulk
- • **Clean & Premium Protein:** rBST-free, grass-fed whey ensures top-tier nutrition and purity
- • **Complete Recovery Matrix:** Combines whey, micellar casein, egg white, and glutamine peptides for total muscle support

## Overview

Syntrax Matrix is a 5 lb sustained-release protein powder featuring a multi-source complex of ultrafiltered whey, micellar casein, native egg white protein, and glutamine peptides. Designed for continuous amino acid delivery, it supports muscle recovery and growth with premium rBST-free, grass-fed whey, zero sugar, and low carbs. Perfectly instantized for easy mixing, it’s a top choice for fitness enthusiasts seeking clean, long-lasting protein nutrition.

## Description

Matrix is a sustained release protein blend that derives from ultrafiltered whey protein, ultrafiltered micellar casein, native egg white protein and glutamine peptides. Matrix is thoroughly instantized so that every scoop dissolves perfectly in your favorite beverage using only a spoon for vigorous stirring. Matrix is available in 11 amazing flavors!

## Features

- Multi-Source Protein Complex: Features Undenatured Micellar Casein and Egg White Protein for comprehensive muscle recovery and growth
- Sustained-Release Protein Blend: Advanced formula delivers a continuous stream of amino acids throughout the day for optimal muscle support
- Premium Quality Ingredients: Contains rBST-Free, Grass-Fed Whey for superior protein nutrition and quality assurance
- Low Carb Nutrition: Zero sugar and low carbohydrate content supports lean muscle development and fitness goals
- Complete Protein Matrix: Combines ultrafiltered whey protein, micellar casein, native egg white protein, and glutamine peptides for comprehensive amino acid profile

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B09Y2C33YM |
| Best Sellers Rank | #182 in Sports Nutrition Whey Protein Powders |
| Date First Available | April 15, 2022 |
| Item Model Number | SM5MC |
| Manufacturer | Si03, Inc. |
| Product Dimensions | 9 x 6 x 14 inches; 5 pounds |

## Product Details

- **Brand:** Syntrax
- **Flavor:** Milk Chocolate
- **Item Weight:** 5 Pounds
- **Material Type Free:** rBST-Free
- **Servings per Container:** 73

## Images

![Matrix Sustained‑Release Protein Powder Blend, Milk Chocolate 5 lb - Image 1](https://m.media-amazon.com/images/I/71oyjYON0WL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ High Quality, Good Taste, Easy Mix
*by  on Reviewed in the United States June 1, 2026*

Top quality

### ⭐⭐⭐⭐⭐ Love the taste!
*by  on Reviewed in the United States March 2, 2026*

Great taste! My go to for many years now. New packaging design. I’m a milk chocolate fan. I put some ice cubes in, water, half a scoop of protein, and half a banana to start my day. I finish it quickly!

### ⭐⭐⭐⭐⭐ Good just mix it up good
*by  on Reviewed in the United States March 12, 2026*

I like the macros and the taste is good not very chemically . You do have to mix pretty aggressively so don’t expect to use a spoon . Texture is fine when mixed properly.

## Frequently Bought Together

- Syntrax Nutrition Matrix Protein Powder, Sustained-Release Protein Blend, Milk Chocolate, 5 lbs
- Syntrax Matrix Whey Protein, Peanut Butter Cookie, 5 Pound

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**Shop now:** [https://www.desertcart.hr/products/429215613-matrix-sustained-release-protein-powder-blend-milk-chocolate-5-lb](https://www.desertcart.hr/products/429215613-matrix-sustained-release-protein-powder-blend-milk-chocolate-5-lb)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-29*