--- product_id: 374923608 title: "Reflex Instant Mass Heavyweight Mass Gainer Protein, Blueberry, 5.4kg | Over 1000 kcal per serving with 60g protein and creatine. High calorie protein shake for post workout or before bed." brand: "reflex nutrition" price: "€ 187.48" currency: EUR in_stock: true category: "Reflex Nutrition" url: https://www.desertcart.hr/products/374923608-reflex-instant-mass-heavyweight-mass-gainer-protein-blueberry-5-4kg store_origin: HR region: Croatia --- # Sustained-release carbs 1000+ kcal/serving 20g protein/100g Reflex Instant Mass Heavyweight Mass Gainer Protein, Blueberry, 5.4kg | Over 1000 kcal per serving with 60g protein and creatine. High calorie protein shake for post workout or before bed. **Brand:** reflex nutrition **Price:** € 187.48 **Availability:** ✅ In Stock ## Summary > 🚀 Bulk smarter, recover faster, and own your gains with Reflex Instant Mass Heavyweight! ## Quick Answers - **What is this?** Reflex Instant Mass Heavyweight Mass Gainer Protein, Blueberry, 5.4kg | Over 1000 kcal per serving with 60g protein and creatine. High calorie protein shake for post workout or before bed. by reflex nutrition - **How much does it cost?** € 187.48 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/374923608-reflex-instant-mass-heavyweight-mass-gainer-protein-blueberry-5-4kg) ## Best For - reflex nutrition enthusiasts ## Why This Product - Trusted reflex nutrition brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Carb Complex:** Avoid sugar crashes with a slow-release carbohydrate blend designed for long, intense workouts. - • **Power-Packed Calorie Surge:** Fuel your gains with 1000+ calories per 300g serving—perfect for hard gainers who refuse to settle. - • **Quad-Source Protein Matrix:** Experience rapid and sustained muscle recovery with 4 premium whey proteins plus micellar casein. - • **Creatine-Enhanced Performance:** Boost explosive power and endurance with clinically proven Creapure® creatine monohydrate. - • **18 Essential Vitamins & Minerals:** Support every phase of training with a comprehensive micronutrient profile for total body resilience. ## Overview Reflex Nutrition Instant Mass Heavyweight (5.4kg) Blueberry is a premium weight gainer designed for athletes and hard gainers. Each 300g serving delivers over 1000 kcal, 60g carbohydrates, and 60g protein from a sophisticated blend of four whey proteins and micellar casein for immediate and sustained muscle nourishment. Enhanced with Creapure® creatine and a slow-release carb matrix, it fuels intense workouts and supports explosive performance. Fortified with 18 vitamins and minerals, this caffeine- and GMO-free formula is your all-in-one solution for muscle growth, recovery, and sustained energy. ## Description Product Description Reflex Nutrition’s Instant Mass Heavyweight protein powder is developed for hard gainers and athletes seeking a quality blend of proteins and complex carbohydrates. With over 1000 calories per shake, this bulking protein powder formula fuels your body with substantial quantities of macronutrients for building and maintaining muscle mass. Our protien blend combines four premium sources of whey protein with slow-releasing micellar casein, catering to both immediate and sustained amino acid delivery. The Whey Protein Concentrate is carefully processed to preserve its purity, while Hydrolysed Whey Protein is enzymatically treated for rapid absorption. Together with Native Whey, these form a full-spectrum protein assault that contributes effectively to muscle growth and recovery. Instant Mass Heavyweight bodybulding supplement is crafted with a multifaceted carbohydrate matrix. This intelligent carb blend sidesteps the pitfalls of simple sugars and syrups, opting instead for a sustained-release energy supply - It's the perfect partner for the long, intense workout sessions. Each serving of protein supplements is also power-packed with 18 added vitamins and minerals, amplifying the nutrition profile and supporting your body’s demands through all phases of training - whether you’re prepping, pushing through, or in post-workout recovery, Reflex's weight gain protein powder formula will help you achieve your goals. Incorporated into this mix is creatine powder, scientifically proven to increase physical performance in successive bursts of short-term, high-intensity exercise, ideal for those aiming to dominate in their sport. This high protein shake is available in two sizes to accommodate your training intensity and frequency (protein powder 2kg and protein powder 5.4kg). Choose your flavour from a variety including traditional favourites and exciting new taste profiles (vanilla protein powder, strawberry protein powder, chocolate protein powder and more). Ingredients maltodextrin. GLUTAMINE PEPTIDES (WHEAT). OAT FLOUR. WHEY PROTEIN CONCENTRATE (MILK)( emulsifier( SOYA LECITHIN)). MILK PROTEIN(OF WHICH MICELLAR CASEIN (MILK)(80%)NATIVE WHEY PROTEIN (MILK)(20%)). HYDROLYSED WHEY PROTEIN (MILK). flavouring. creatine monohydrate( Creapure(R)). magnesium citrateL-glutamine. colours( betanin. anthocyanins). L-choline bitartrate. L-ascorbic acid. sweetener( sucralose). Bacillus coagulans( Lactospore(R))zinc bisglycinate P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions Recommended daily portion - 1 portion. Safety Warning Store in a cool dry place away from direct sunlight and moisture. Do not use if the inner safety seal under the cap is broken or missing. Manufacturer Contact Information Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK See more ## Features - The product contains 1538 kJ/363 kcal per 100 g, as well as 2.2 g fat (of which 0.9 g is saturated fat), 65 g carbohydrates (of which 4.8 g is sugar) and 20 g protein. A 300 g serving provides correspondingly higher amounts according to this information. - is specially designed to complement your lifestyle - Suitable for supplementary use as part of a varied diet – without health or function-related claims. - Stir 300 g of powder into sufficient liquid and consume as needed. The nutritional values per serving correspond to three times the values per 100 g. Taste and texture may vary slightly depending on the variety. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09JL96KJ6 | | ASIN | B09JL96KJ6 | | Age Range Description | Adult | | Allergen Information | Contains: Milk may contain | | Benefits | Muscle Growth | | Best Sellers Rank | 2,685 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 24 in Protein Nutrition Blends | | Brand Name | Reflex Nutrition | | Country Of Origin | United Kingdom | | Country of origin | United Kingdom | | Customer Reviews | 4.0 4.0 out of 5 stars (57) | | Customer reviews | 4.0 4.0 out of 5 stars (57) | | Diet Type | Halal | | Flavour | Blueberry | | Global Trade Identification Number | 05033579001470 | | Guaranteed software updates until | unknown | | Is discontinued by manufacturer | No | | Item Dimensions | 13 x 38 x 45.5 centimetres | | Item Weight | 5400 Grams | | Item model number | Instant Mass Heavyweight Protein | | Manufacturer | Reflex Nutrition | | Manufacturer | Reflex Nutrition | | Manufacturer Contact Information | Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK | | Manufacturer Part Number | 100076540077 | | Material Type Free | Caffeine Free, GMO Free | | Model Name | Instant Mass Heavyweight (5.4kg) Blueberry | | Model Number | Instant Mass Heavyweight Protein | | Net Content Volume | 22.48 Litres | | Number of Items | 1 | | Package Type Name | Tub | | Product Dimensions | 13 x 38 x 45.5 cm; 5.4 kg | | Protein | 12 g, 60 g | | Protein Source | Whey | | Recommended Uses For Product | During Workout, Post-Workout, Pre-Workout | | Supplement Formulation | Multi-Supplement | | Unit Count | 1.0 gram | | Vitamins And Minerals | 0.1, 0.11 milligrams | ## Product Details - **Brand:** Reflex Nutrition - **Diet type:** Halal - **Flavour:** Blueberry - **Item weight:** 5400 Grams - **Material Type Free:** Caffeine Free, GMO Free - **Number of items:** 1 - **Product benefits:** Muscle Growth - **Protein source:** Whey - **Recommended uses for product:** During Workout, Post-Workout, Pre-Workout - **Unit count:** 1.0 gram ## Images ![Reflex Instant Mass Heavyweight Mass Gainer Protein, Blueberry, 5.4kg | Over 1000 kcal per serving with 60g protein and creatine. High calorie protein shake for post workout or before bed. - Image 1](https://m.media-amazon.com/images/I/71OWMgrIu1L.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: Why isnt the nutritional info shown?!** A: The company sent me only half my order on multiple occasions and the wrong flavour. The fact that the nutritional info isnton there is no surprise **Q: how well does this mix in an ordinary shaker? i know some are clumpy and chalky tasting, thank you** A: Hi I would recommend blend for 7 seconds if that. If you have a good shaker and give it a good shake it will be just as smooth great mix chocolate for me taste wonderful **Q: Has it got any. Bcaa,s pls** A: Finished it a long time ago so don’t have the package. But i checked the photos and googled the BCAA’s and based on this, the product doesn’t have any of the 9 essential amino acids aka BCAA. So it’s a No and you’ll have to buy it separately. **Q: Must I work out to use this?** A: I won't buy this again as found the taste not to my liking at all as for working out I would as I belive this will help you gain weight but mostly on the stomach if you don't work out ## Frequently Bought Together - Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Blueberry, 5.4 kg) - Bulk Iconic Shaker Bottle, 750ml, Clear, Leak-Proof, BPA-Free, Wire Mixing Ball for Lump-Free Shakes, Convenient Carry Handle, Transparent Fill Level, Dishwasher Safe - Warrior Protein Shaker Bottle, Includes Wire Mixball Blender – 600ml – Perfect for Mixing Powdered Shakes, Clear, BPA Free, Dishwasher Safe --- ## 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.hr/products/374923608-reflex-instant-mass-heavyweight-mass-gainer-protein-blueberry-5-4kg](https://www.desertcart.hr/products/374923608-reflex-instant-mass-heavyweight-mass-gainer-protein-blueberry-5-4kg) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-30*