---
product_id: 470884999
title: "Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces"
brand: "syntrax"
price: "€ 92.43"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.nl/products/470884999-syntrax-nutrition-matrix-sustained-release-protein-blend-peanut-butter-cookie
store_origin: NL
region: Netherlands
---

# Sustained-release protein for all-day muscle fuel Instant mixability—no clumps, just smooth shakes Peanut Butter Cookie flavor with real cookie pieces Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces

**Brand:** syntrax
**Price:** € 92.43
**Availability:** ✅ In Stock

## Summary

> 🥜 Fuel your gains with flavor that sticks around!

## Quick Answers

- **What is this?** Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces by syntrax
- **How much does it cost?** € 92.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/470884999-syntrax-nutrition-matrix-sustained-release-protein-blend-peanut-butter-cookie)

## 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

- • **Mixes in Seconds:** Instantized formula dissolves effortlessly in water or milk—no blender needed.
- • **Guilt-Free Indulgence:** Rich peanut butter cookie flavor with real cookie pieces satisfies cravings without compromise.
- • **All-Day Muscle Support:** Sustained-release blend of whey, micellar casein & egg white protein keeps you fueled longer.
- • **Trusted by Fitness Pros:** Highly rated with 4.6 stars and praised for smooth digestion and great taste.
- • **Clean & Premium Ingredients:** rBST-free, grass-fed whey ensures top-tier protein quality for conscious consumers.

## Overview

Syntrax Nutrition Matrix is a 5 lb sustained-release protein blend combining rBST-free grass-fed whey, micellar casein, and egg white protein. Designed for smooth mixing and superior digestion, it delivers steady amino acid release to support muscle recovery and growth. Available in a crave-worthy Peanut Butter Cookie flavor with real cookie pieces, it’s a premium choice for fitness enthusiasts seeking both taste and performance.

## 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!

Review: Awesome Protein amazing Price - I’ve been obsessed with fitness and bodybuilding for over 20 years. I’ve tried dozens of different brands and flavors of protein powders over the years. I know Syntrax is a quality company, so I switched to this protein from another product/brand. I love this stuff! It tastes good, it mixes really well and it digests really well for me. No bloating or gas. It’s also very reasonably priced! $28 for 2 pounds is amazing for quality protein. I love that it also contains egg white protein as well as whey and micellar Casein I will be ordering lots more and I can’t wait to try other flavors!
Review: Not a fan of the flavor - I'm gonna be confusing. I'm giving it 5 stars but 3 on here. 5 because unbiased, altogether, this is great. No problems with the seller, shipping went smooth, product was great, it blended nicely, & tastes like yummy strawberry milk. No chalky flavor or grittiness. It was really good. 3 because biased, I had some issues. Still no problems with the seller or shipping. I'd recommend the seller to others. The product was also goodish. It was smooth & did blend nice. Wasn't chalky & no grittiness. The downside was it tasted like milk. I was expecting more of a cream flavor. Milk tastes gross. I tried adding strawberry/chocolate syrup/powder to tone down the milk but it didn't work. If you love strawberry milk, you'll love this. If you don't like the taste of milk, it's probably not for you. I'd use the seller for something else though.

## Features

- Sustained-Release Protein Blend
- Contains rBST-Free, Grass-Fed Whey
- Undenatured Micellar Casein & Egg White Protein
- Best-Tasting Protein in Water or Milk
- Mixes Instantly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B08T22T4FY |
| Best Sellers Rank | #186,006 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #60 in Peanut-Butter Cookies |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,133) |
| Date First Available  | September 1, 2022 |
| Item model number  | SM5PB |
| Manufacturer  | Si03, Inc. |
| Product Dimensions  | 9 x 6 x 14 inches; 5 Pounds |

## Product Details

- **Brand:** Syntrax
- **Diet Type:** Halal, Kosher, Vegetarian
- **Flavor:** Peanut Butter
- **Item Weight:** 5 Pounds
- **Servings per Container:** 63

## Images

![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces - Image 1](https://m.media-amazon.com/images/I/61Hne2XAwWL.jpg)
![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces - Image 2](https://m.media-amazon.com/images/I/61yFQHjqqYL.jpg)
![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces - Image 3](https://m.media-amazon.com/images/I/71BbB+4MhpL.jpg)
![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces - Image 4](https://m.media-amazon.com/images/I/71VhWUIURzL.jpg)
![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Peanut Butter Cookie 5 lbs. Real Cookie Pieces - Image 5](https://m.media-amazon.com/images/I/814zTiC0MsL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome Protein amazing Price
*by J***S on February 20, 2025*

I’ve been obsessed with fitness and bodybuilding for over 20 years. I’ve tried dozens of different brands and flavors of protein powders over the years. I know Syntrax is a quality company, so I switched to this protein from another product/brand. I love this stuff! It tastes good, it mixes really well and it digests really well for me. No bloating or gas. It’s also very reasonably priced! $28 for 2 pounds is amazing for quality protein. I love that it also contains egg white protein as well as whey and micellar Casein I will be ordering lots more and I can’t wait to try other flavors!

### ⭐⭐⭐⭐⭐ Not a fan of the flavor
*by S***L on October 8, 2024*

I'm gonna be confusing. I'm giving it 5 stars but 3 on here. 5 because unbiased, altogether, this is great. No problems with the seller, shipping went smooth, product was great, it blended nicely, & tastes like yummy strawberry milk. No chalky flavor or grittiness. It was really good. 3 because biased, I had some issues. Still no problems with the seller or shipping. I'd recommend the seller to others. The product was also goodish. It was smooth & did blend nice. Wasn't chalky & no grittiness. The downside was it tasted like milk. I was expecting more of a cream flavor. Milk tastes gross. I tried adding strawberry/chocolate syrup/powder to tone down the milk but it didn't work. If you love strawberry milk, you'll love this. If you don't like the taste of milk, it's probably not for you. I'd use the seller for something else though.

### ⭐⭐⭐⭐⭐ Gainz o clock
*by A***G on December 25, 2025*

I would use this in my nightly shake. Easier to hit protein goals for those gainz! Tasted pretty good. I always mixed with water, raspberries, PB and honey maybe.

## Frequently Bought Together

- Syntrax Nutrition Matrix Protein Powder, Sustained-Release Protein Blend, Real Cookie Pieces, Peanut Butter Cookie, 5 lbs
- Syntrax Nutrition Trophix Protein Powder, Ultra Sustained-Release Protein Blend, Real Vanilla Bean Specks, Creamy Vanilla, 5 lbs, Kosher

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nl/products/470884999-syntrax-nutrition-matrix-sustained-release-protein-blend-peanut-butter-cookie](https://www.desertcart.nl/products/470884999-syntrax-nutrition-matrix-sustained-release-protein-blend-peanut-butter-cookie)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-17*