--- product_id: 429215613 title: "Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Milk Chocolate 5 lbs." brand: "syntrax" price: "R2970" currency: ZAR in_stock: true reviews_count: 7 category: "Syntrax" url: https://www.desertcart.co.za/products/429215613-syntrax-nutrition-matrix-sustained-release-protein-blend-milk-chocolate-5 store_origin: ZA region: South Africa --- # Sustained-release protein for all-day muscle fuel Instant mixability—no clumps, just smooth shakes rBST-free, grass-fed whey for clean nutrition Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Milk Chocolate 5 lbs. **Brand:** syntrax **Price:** R2970 **Availability:** ✅ In Stock ## Summary > 💪 Fuel smarter, recover stronger—protein that works as hard as you do! ## Quick Answers - **What is this?** Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Milk Chocolate 5 lbs. by syntrax - **How much does it cost?** R2970 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/429215613-syntrax-nutrition-matrix-sustained-release-protein-blend-milk-chocolate-5) ## 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 - • **Effortless Mixing:** Instantized formula dissolves perfectly with just a spoon—no blender needed - • **All-Day Muscle Support:** Sustained-release blend keeps you fueled from morning meetings to evening workouts - • **Clean, Premium Protein:** rBST-free, grass-fed whey plus undenatured micellar casein and egg white protein for pure, high-quality gains - • **Trusted by Fitness Pros:** Top-ranked and highly rated by over 1,100 users who demand quality and value - • **Flavor That Fits Your Lifestyle:** Rich milk chocolate taste that blends seamlessly in water or milk, making your protein ritual a treat, not a chore ## Overview Syntrax Nutrition Matrix is a 5 lb sustained-release protein blend featuring rBST-free, grass-fed whey, undenatured micellar casein, and egg white protein. Designed for smooth mixing and all-day muscle nourishment, it delivers premium quality protein with a delicious milk chocolate flavor, making it a top choice for fitness enthusiasts seeking clean, effective 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! Review: HEALTHY and TASTY - I love this protein powder. It has good ingredients, it's tasty, and it's cost effective. Review: Matrix Milk Chocolate for the win! - If you live chocolate this is your protein! I have been using this brand for 10 years because it is creamy and not overly sweet like Premier Protein Shakes. I use unsweetened almond milk and mix several days worth at a time before I go to bed. I do this because for it to be creamy I let it sit overnight, if you mix and drink immediately it can be a little grainy. I have tried other brands over the years and go back to this one every time. ## 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 | B09Y2C33YM | | Best Sellers Rank | #29,624 in Health & Household ( See Top 100 in Health & Household ) #167 in Sports Nutrition Whey Protein Powders | | Customer Reviews | 4.6 4.6 out of 5 stars (1,133) | | 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 ![Syntrax Nutrition Matrix - Sustained-Release Protein Blend, Milk Chocolate 5 lbs. - Image 1](https://m.media-amazon.com/images/I/71oyjYON0WL.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ HEALTHY and TASTY *by N***9 on August 8, 2025* I love this protein powder. It has good ingredients, it's tasty, and it's cost effective. ### ⭐⭐⭐⭐⭐ Matrix Milk Chocolate for the win! *by B***L on December 12, 2025* If you live chocolate this is your protein! I have been using this brand for 10 years because it is creamy and not overly sweet like Premier Protein Shakes. I use unsweetened almond milk and mix several days worth at a time before I go to bed. I do this because for it to be creamy I let it sit overnight, if you mix and drink immediately it can be a little grainy. I have tried other brands over the years and go back to this one every time. ### ⭐⭐⭐⭐⭐ Love the taste! *by A***R on March 2, 2026* Great taste! My go to for many years now. New packaging design. I’m a milk chocolate fan. ## 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 --- ## 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.co.za/products/429215613-syntrax-nutrition-matrix-sustained-release-protein-blend-milk-chocolate-5](https://www.desertcart.co.za/products/429215613-syntrax-nutrition-matrix-sustained-release-protein-blend-milk-chocolate-5) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-04-25*