--- product_id: 429215612 title: "Nutrition Matrix - Sustained-Release Protein Blend, Perfect Chocolate 5 lbs." brand: "syntrax" price: "AR$269219" currency: ARS in_stock: true reviews_count: 13 category: "Syntrax" url: https://www.desertcart.com.ar/products/429215612-nutrition-matrix-sustained-release-protein-blend-perfect-chocolate-5-lbs store_origin: AR region: Argentina --- # Sustained-release protein for all-day muscle fuel rBST-free, grass-fed whey for premium clean protein Instant mixability in water or milk, no clumps Nutrition Matrix - Sustained-Release Protein Blend, Perfect Chocolate 5 lbs. **Brand:** syntrax **Price:** AR$269219 **Availability:** ✅ In Stock ## Summary > 💪 Fuel your hustle with every scoop—protein perfected for the driven professional ## Quick Answers - **What is this?** Nutrition Matrix - Sustained-Release Protein Blend, Perfect Chocolate 5 lbs. by syntrax - **How much does it cost?** AR$269219 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/429215612-nutrition-matrix-sustained-release-protein-blend-perfect-chocolate-5-lbs) ## 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 - • **All-Day Muscle Support:** Sustained-release blend keeps you fueled from morning meetings to evening workouts - • **Clean & Ethical Protein:** rBST-free, grass-fed whey plus undenatured micellar casein and egg white protein for pure, guilt-free gains - • **Trusted by Fitness Pros:** Top-rated with 4.6 stars and a loyal following of over 1,100 reviews—join the elite protein club - • **Mixes Instantly, No Grit:** Thoroughly instantized formula dissolves smoothly with just a spoon—ditch the blender hassle - • **Flavor That Fits Your Lifestyle:** Rich, crave-worthy chocolate that tastes amazing in water or milk—no chalky aftertaste ## Overview Syntrax Nutrition Matrix is a 5 lb sustained-release protein blend combining ultrafiltered whey from rBST-free, grass-fed cows, undenatured micellar casein, and native egg white protein. Designed for smooth instant mixing and superior digestion, it delivers clean, long-lasting muscle nourishment in a delicious chocolate flavor favored by fitness enthusiasts and professionals alike. ## 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 | B09XZB1LRM | | 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 14, 2022 | | Department | All Ages | | Item model number | SM5PC | | Manufacturer | Si03, Inc. | | Product Dimensions | 9 x 6 x 14 inches; 0.08 ounces | ## Product Details - **Brand:** Syntrax - **Flavor:** Perfect Chocolate - **Item Weight:** 2.27 Grams - **Material Type Free:** rBST-Free - **Servings per Container:** 73 ## Images ![Nutrition Matrix - Sustained-Release Protein Blend, Perfect Chocolate 5 lbs. - Image 1](https://m.media-amazon.com/images/I/71cMYX-E8HL.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. ### ⭐⭐⭐⭐⭐ 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. ## Frequently Bought Together - Syntrax Nutrition Matrix Protein Powder, Sustained-Release Protein Blend, Perfect Chocolate, 5 lbs - Syntrax Nutrition Nectar Medical, All Natural Whey Protein Isolate, Unflavored, 2 lbs. --- ## 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.com.ar/products/429215612-nutrition-matrix-sustained-release-protein-blend-perfect-chocolate-5-lbs](https://www.desertcart.com.ar/products/429215612-nutrition-matrix-sustained-release-protein-blend-perfect-chocolate-5-lbs) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-17*