--- product_id: 47450600 title: "Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings)" brand: "sirenlabs" price: "€ 117.91" currency: EUR in_stock: true reviews_count: 5 url: https://www.desertcart.gr/products/47450600-siren-labs-ultra-karbs-mass-gainer-post-workout-muscle-builder store_origin: GR region: Greece --- # Fast Energy Release Premium Carb Blend Muscle Recovery Boost Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) **Brand:** sirenlabs **Price:** € 117.91 **Availability:** ✅ In Stock ## Summary > Fuel Your Ambition! 🚀 ## Quick Answers - **What is this?** Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) by sirenlabs - **How much does it cost?** € 117.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/47450600-siren-labs-ultra-karbs-mass-gainer-post-workout-muscle-builder) ## Best For - sirenlabs enthusiasts ## Why This Product - Trusted sirenlabs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimized Recovery:** Accelerate your recovery with our advanced carb blend. - • **Convenient & Effective:** Easy to mix, perfect for on-the-go athletes. - • **Stimulant-Free Formula:** No jitters, just pure energy for serious athletes. - • **Unleash Your Potential:** Experience rapid glycogen replenishment for peak performance. - • **Nutrient Super Transporter:** Waxy Maize ensures maximum nutrient absorption. ## Overview Siren Labs Ultra Karbs is a premium mass gainer designed for serious athletes, featuring a patented carbohydrate blend (KarboLyn) that promotes fast energy release and optimal recovery. With no stimulants or caffeine, this product supports sustained energy levels and nutrient absorption, making it an essential addition to any workout regimen. ## Description Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) ## Features - Elite Carbo-Loading Agent: KarboLyn is a patented carbohydrate found in Ultra Karbs that is specifically designed for the serious athlete looking for a fast, easy, convenient and safe way to load the muscle with readily accessible muscle energy (glycogen). - Nutrient Super Transporter: With a high molecular weight and low osmolarity, meaning it bypasses the stomach and is absorbed by the intestines for immediate assimilation, Waxy Maize acts as a 'super transporter' helping to shuttle nutrients into the body at a higher absorption rate. - Premium Quality: Containing no stimulants, creatine or caffeine, Ultra Karbs is for the serious athlete, and it's an essential part of any physical conditioning program. - Supports Workout Results: Ultra Karbs' precise formulation allows you to carbo-load quickly before workouts for maximum performance, helps to maintain energy levels for a long duration of time, and optimizes your recovery afterwards. Combine with a pre-workout supplement for even greater and more enhanced results. - Your Cutting Edge: With its ability to quickly restore glycogen in the muscle during and after training, Ultra Karbs is an ideal solution to help accelerate and optimize your recovery. ## Product Details - **Brand:** SIRENLABS - **Flavor:** Natural Unflavored - **Unit Count:** 35.274 Ounce - **Item Form:** Powder - **Item Weight:** 998 Grams - **Item dimensions L x W x H:** 9.1 x 5.6 x 5.6 inches - **Special Ingredients:** KarboLyn Ultra Premium Carb Blend - **Product Benefits:** Energy Management - **Age Range (Description):** Adult - **Number of Items:** 1 ## Images ![Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) - Image 1](https://m.media-amazon.com/images/I/71qCVRye7pL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Approved product *by K***S on November 4, 2022* Approved product ### ⭐⭐⭐⭐⭐ Best carb I’ve tried *by D***N on December 12, 2019* I’ve been taking this as a performance carb for months and got tired of over paying in store work great with shakes. ### ⭐⭐⭐⭐⭐ Easy to use *by N***N on November 8, 2018* Increase protein to gain weight ## Frequently Bought Together - Siren Labs Ultra Karbs Mass Gainer Post Workout Muscle Builder Healthy Carb Loading - Carbohydrate Blend with KarboLyn - More Energy, Faster Recovery - Weight Gainer for Men (40 Servings) - PMD Sports CG5 Premium Creatine & L Glutamine Powder, Power Recovery, Build Lean Muscle, Increase Workout Performance, Maximum Strength Pre Workout & Post Workout, Unflavored, 60 Servings - PMD Sports Ultra Pump Fuel Insanity - Pre Workout Drink Mix for Energy, Strength, Endurance, Recovery - Complex Carbohydrates and Amino Energy - Cherry Bombsicle (30 Servings) --- ## 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.gr/products/47450600-siren-labs-ultra-karbs-mass-gainer-post-workout-muscle-builder](https://www.desertcart.gr/products/47450600-siren-labs-ultra-karbs-mass-gainer-post-workout-muscle-builder) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-01*