--- product_id: 737695331 title: "Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 2 kg)" brand: "reflex nutrition" price: "$128.85" currency: USD in_stock: true reviews_count: 8 category: "Reflex Nutrition" url: https://www.desertcart.us/products/737695331-instant-mass-heavyweight-mass-gainer-over-1000-kcal-per-serving store_origin: US region: United States of America --- # 5g Creapure® creatine boost 60g premium protein blend 1000+ kcal per serving Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 2 kg) **Brand:** reflex nutrition **Price:** $128.85 **Availability:** ✅ In Stock ## Summary > 🏋️‍♂️ Bulk smarter, recover faster, and own every rep with Reflex Instant Mass Heavyweight! ## Quick Answers - **What is this?** Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 2 kg) by reflex nutrition - **How much does it cost?** $128.85 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/737695331-instant-mass-heavyweight-mass-gainer-over-1000-kcal-per-serving) ## 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 - • **Calorie Powerhouse:** Fuel your gains with 1000+ kcal per serving—because muscle growth demands serious energy. - • **Clean & Trusted Formula:** Grass-fed whey, zero added sugars, Halal certified, and free from artificial nasties—pure quality you can trust. - • **Quad-Source Protein Matrix:** 60g of fast-absorbing whey plus slow-release micellar casein for all-day muscle repair. - • **Vitamin & Mineral Fortified:** 18 essential vitamins and minerals to support recovery, immunity, and overall vitality. - • **Creatine-Enhanced Performance:** Includes Creapure® creatine to amplify strength and explosive workout power. ## Overview Reflex Nutrition Instant Mass Heavyweight is a high-calorie mass gainer delivering over 1000 kcal and 60g of premium protein per serving, enhanced with Creapure® creatine and a blend of 18 vitamins and minerals. Designed for hard gainers and serious athletes, it combines fast and slow-digesting proteins for optimal muscle growth and recovery. This clean, Halal-certified formula contains no added sugars or artificial colors, making it a trusted choice for effective post-workout or pre-bed supplementation. ## 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 80% Micellar Casein, 20% Native Whey), Hydrolysed Whey Protein (MILK), Flavouring, Creatine Monohydrate (Creapure®), Colour (Betanin), L-Glutamine, Magnesium Citrate, L-Choline Bitartrate, Vitamin C (L-Ascorbic Acid), Sweetener (Sucralose), Bacillus Coagulans (LactoSpore®), Zinc Bisglycinate, Vitamin E (D-Alpha Tocopherol Acetate), Selenium Enriched Yeast, Ferrous Bisglycinate, Vitamin B3 (Nicotinamide), Copper Bisglycinate, Black Pepper Extract (BioPerine® Piperine), Vitamin A (Retinyl Acetate), Vitamin B5 (Calcium D-Pantothenate), Vitamin D3 (Cholecalciferol), Vitamin B6 (Pyridoxine Hydrochloride), Vitamin B2 (Riboflavin), Vitamin B1 (Thiamine Hydrochloride), Chromium Picolinate, Vitamin B9 (Folic Acid), Vitamin B7 (D-Biotin), Vitamin B12 (Methylcobalamin). 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 For a full serving mix 300 g (approximately five heaped 60ml measures with 700 ml water in a suitable shaker cup or blender, mix until smooth. This product is intended for adults performing high-intensity exercise. When just starting with this product, you may find it beneficial to begin with half the quantity before slowly increasing to the full serving in order to make it fit into your personal calorie plan. Consume Instant Mass® Heavyweight between meals to maintain a positive nitrogen balance, or drink 20-30 minutes after a workout for optimal results. Alternatively, take Instant Mass® Heavyweight 45-60 minutes before bed to contribute to muscle maintenance overnight. Once mixed, consume the shake immediately and don't leave to stand. For a shake that is more calorie-heavy and creamier, try the product with semi-skimmed milk. Safety Warning This product is a food supplement and should be used in conjunction with food as part of a varied and balanced diet and healthy lifestyle, not as a substitute for such. Recommended consumption is one 300 g serving per day. Do not exceed the stated recommended daily dose. This product is not intended for use by persons under the age of 18. Keep out of reach of young children. The scoop included with this product measures by volume not by weight, for precise measurements please use measuring scales. This product is sold by weight, not by number of servings. This product has been manifactured in a facility which is routinely tested for banned substances. Protein contributes to the growth and maintenance of muscle mass. Creatine increases physical performance in successive bursts of short-term, high intensity exercise. The beneficial effect is obtained with a daily intake of 3 g of creatine. Box Contains 1 x 2kg container Manufacturer Contact Information Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK See more Review: Good value and effective - Excellent product, good price. Other similar products I have tried have a sickly sweet synthetic flavour, more expensive and seemingly less effective. Nice taste that isn't overpowering or very sweet. Good consistency when mixed (I don't mix it very well or shake that much and the few clumps I get aren't at all off-putting) Despite the calories and well rounded ingredients I wouldn't think of this as a replacement and am pleased to see that it isn't marketed as such. Rather, if you are training or just generally busy with stuff this feels like an additional surplus/boost to improve your growth and overall health. I am not a big fan of protein powders, meal replacements, pre-workout etc and this feels like it sits somewhere nicely inbeteeen those. I would highly recommend this product to anyone that wants a well rounded powder to supplement their diet. Review: Tastes great no crappy aftertaste - Just bought this Strawberry and Cream First of all it smells amazing . I'm getting old (55) and I'm an extremely busy person ... i don't go to the gym never have never will and bought this as additional calorie intake. 1st impressions .... you will need a massive shaker to fit in a full serving . I ended up doing 1/2 serving with 500ml of water twice. It mixes absolutely fine with no clumping ( I did only add a little at a time to the water ) Tastes absolutely fine with no crappy after taste . No complaints ## Features - Engineered for Gains: This seamless protein shake mix is specifically formulated to accelerate muscle and weight gains and improve post-workout recovery, enhancing overall workout performance for the dedicated, hard gainer and serious athlete alike - Excellent Nutrition Profile: Packed with quality ingredients, each protein shake serving delivers over 1000 kcals, 200g of complex carbohydrates, 60g of muscle gain protein, critical EAAs, creatine, 18 vitamins and minerals (B12, B6, C, Iron, Zinc) - Outstanding Taste Sensation: Our Strawberries and Cream mass gainer flavour isn't just a treat for your taste buds - it's a deliciously creamy escape into indulgence with every sip, all while you are fueling your body for mass gain and muscle recovery - Optimal Timing for Maximum Impact: Consume Instant Mass Heavyweight high protein shake between meals for a positive nitrogen balance, 20-30 minutes post workout for best results or 45-60 minutes before sleep to aid overnight muscle maintenance - Trusted Quality Assurance: Reflex Nutrition's promise to quality means whey protein powder from grass-fed cows - Protein Sources are Glutamine Peptides, Whey Protein Concentrate, Milk Protein, Hydrolysed Whey Protein - Produced in an Informed Sport Registered Facility - Suitable for vegetarians and Halal certified - Zero added sugars, artificial colors, or soy protein, assuring a conscientious choice of weight gainer for your muscle-building objectives ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01E483ON8 | | ASIN | B01E483ON8 | | Age Range Description | Adult | | Allergen Information | Contains: Cereals containing Gluten, Oat, Soy, Wheat | | Benefits | Muscle Growth | | Best Sellers Rank | 1,170 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 9 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 (536) | | Customer reviews | 4.0 4.0 out of 5 stars (536) | | Diet Type | Halal | | Flavour | Strawberry | | Global Trade Identification Number | 05033579001494 | | Is discontinued by manufacturer | No | | Item Dimensions | 20.3 x 20.3 x 25 centimetres | | Item Nype Name | HEALTH_PERSONAL_CARE | | Item Weight | 2000 Grams | | Item model number | Instant Mass Heavyweight Protein | | Manufacturer | Reflex Nutrition Ltd | | Manufacturer | Reflex Nutrition Ltd | | Manufacturer Contact Information | Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK | | Manufacturer Part Number | 100044200032 | | Material Type Free | Caffeine Free, GMO Free | | Model Name | Reflex Nutrition Instant Mass Heavyweight | Mass Protein Powder | | Model Number | Instant Mass Heavyweight Protein | | Number of Items | 1 | | Package Type Name | Tub | | Product Dimensions | 20.3 x 20.3 x 25 cm; 2 kg | | Protein | 60 g | | Protein Source | Whey | | Recommended Uses For Product | During Workout, Post-Workout, Pre-Workout | | Supplement Formulation | Multi-Supplement | | Unit Count | 2000.0 gram | ## Product Details - **Brand:** Reflex Nutrition - **Diet type:** Halal - **Flavour:** Strawberry - **Item weight:** 2000 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:** 2000.0 gram ## Images ![Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream, 2 kg) - Image 1](https://m.media-amazon.com/images/I/71W2uLbZm2L.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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value and effective *by M***E on 3 April 2023* Excellent product, good price. Other similar products I have tried have a sickly sweet synthetic flavour, more expensive and seemingly less effective. Nice taste that isn't overpowering or very sweet. Good consistency when mixed (I don't mix it very well or shake that much and the few clumps I get aren't at all off-putting) Despite the calories and well rounded ingredients I wouldn't think of this as a replacement and am pleased to see that it isn't marketed as such. Rather, if you are training or just generally busy with stuff this feels like an additional surplus/boost to improve your growth and overall health. I am not a big fan of protein powders, meal replacements, pre-workout etc and this feels like it sits somewhere nicely inbeteeen those. I would highly recommend this product to anyone that wants a well rounded powder to supplement their diet. ### ⭐⭐⭐⭐⭐ Tastes great no crappy aftertaste *by A***N on 7 June 2025* Just bought this Strawberry and Cream First of all it smells amazing . I'm getting old (55) and I'm an extremely busy person ... i don't go to the gym never have never will and bought this as additional calorie intake. 1st impressions .... you will need a massive shaker to fit in a full serving . I ended up doing 1/2 serving with 500ml of water twice. It mixes absolutely fine with no clumping ( I did only add a little at a time to the water ) Tastes absolutely fine with no crappy after taste . No complaints ### ⭐⭐⭐⭐ It's very effective *by N***O on 5 January 2026* It's effective but it's not magic. You have to be consistent with it. I added extra weight which I wanted, after a few weeks. Prompt delivery. Well sealed. The protein quality is good. I mix mine with milk. It doesn't upset my tummy. It has a good taste. The only reason I didn't rate it 5 star is the packaging. ## 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 (Strawberries & Cream, 2 kg) - Warrior Protein Shaker Bottle, Includes Wire Mixball Blender – 600ml – Perfect for Mixing Powdered Shakes, Clear, BPA Free, Dishwasher Safe - PhD Nutrition Mixball Shaker, Shaker for Protein Shakes, Wire Mixball Whisk, Red Non-Drip Screw Lid, Transparent Colour, 600 ml --- ## 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.us/products/737695331-instant-mass-heavyweight-mass-gainer-over-1000-kcal-per-serving](https://www.desertcart.us/products/737695331-instant-mass-heavyweight-mass-gainer-over-1000-kcal-per-serving) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-23*