--- product_id: 49485491 title: "One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Strawberries & Cream, 4.35kg)" brand: "reflex nutrition" price: "฿16742" currency: THB in_stock: true reviews_count: 8 category: "Reflex Nutrition" url: https://www.desertcart.co.th/products/49485491-one-stop-xtreme-serious-mass-gainer-all-in-one-protein store_origin: TH region: Thailand --- # 5,000mg Creapure® Creatine 55g Protein per serving 10.3g BCAAs for muscle recovery One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Strawberries & Cream, 4.35kg) **Brand:** reflex nutrition **Price:** ฿16742 **Availability:** ✅ In Stock ## Summary > 🚀 Bulk smarter, recover faster, and own your gains with One Stop® Xtreme! ## Quick Answers - **What is this?** One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Strawberries & Cream, 4.35kg) by reflex nutrition - **How much does it cost?** ฿16742 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/49485491-one-stop-xtreme-serious-mass-gainer-all-in-one-protein) ## 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 - • **Elite Muscle Fuel:** 55g premium grass-fed whey protein to maximize muscle growth and repair. - • **All-in-One Powerhouse:** Simplify your stack with one shake delivering protein, creatine, BCAAs & carbs. - • **Endurance & Strength Boost:** 5,000mg Creapure® creatine enhances high-intensity workout performance. - • **Clean & Conscientious Formula:** Hormone-free, zero added sugars, vegetarian & Halal certified for mindful gains. - • **Optimized Digestion & Absorption:** Digezyme® enzymes + LAB2PRO® friendly bacteria for gut-friendly nutrient uptake. ## Overview Reflex Nutrition One Stop® Xtreme is a premium all-in-one mass gainer protein powder designed for serious athletes and bodybuilders. Each 145g serving packs 55g of high-quality grass-fed whey protein, 10.3g BCAAs, 5,000mg Creapure® creatine, and 71g carbs to fuel muscle growth, recovery, and endurance. Enhanced with digestive enzymes and probiotics, it ensures optimal nutrient absorption. Free from hormones, added sugars, artificial colors, and soy, it’s vegetarian and Halal certified, making it a clean, effective choice for those committed to serious muscle gains. ## Description Product Description One Stop Xtreme is your one stop shop to extremely quality gains. Want all your protein supplements in one shake? Look no further. One Stop® Xtreme weight gain milkshake from Reflex Nutrition is the ultimate choice for serious athletes and bodybuilders seeking comprehensive nutritional support in a single high protein shake. This high calorie weight gain protein powder is not just a supplement; it's a powerhouse blend designed to fuel intense training sessions and facilitate muscle gains. Formulated to replace a multitude of individual supplements, this bulking protein powder offers an impressive profile of 55g of protein, 10.3g of BCAAs, a combination of 71g of high and low GI carbohydrates, and a substantial 5,000mg of premium Creapure® Creatine per 145g serving. This meticulously crafted blend supports muscle recovery and sustained energy, making it ideal for those looking to bulk up effectively and efficiently. In addition to its core macronutrients, One Stop® Xtreme mass protein powder is enriched with the Digezyme® digestive enzyme complex and LAB2PRO® friendly bacteria, ensuring optimal nutrient absorption. Essential amino acids like L-Leucine, Beta Alanine, Betaine Anhydrous, and Taurine enhance the formula, further aiding in muscle repair. The comprehensive vitamin and mineral matrix in One Stop® Xtreme plays a crucial role in maintaining normal protein synthesis, immune system function, and normal testosterone production - essential for peak physical performance. With its smooth texture and superior taste of the powder, One Stop® Xtreme is not only effective but also enjoyable to consume. Available in both 2.03kg tubs (protein powder 2kg with 14 servings) and larger 4.35kg tubs (with 30 servings), Reflex's high calorie weight gain protein powder is designed to fit the needs of serious users: whether you're preparing for a competition or looking to exceed your personal bests, One Stop® Xtreme is your go-to supplement for achieving formidable results. Ingredients Whey Protein Concentrate (30%) (MILK), Maltodextrin, MILK Protein (12%) (of which 80% Micellar Casein, 20% Native Whey), OAT Flour, BARLEY Flour, Glutamine Peptides (WHEAT), Creatine Monohydrate (Creapure), L-Leucine, Flavouring, Betaine Anhydrous, Beta Alanine, L-Taurine, Magnesium Bisglycinate, Colour (Betanin), Thickener (Cellulose Gum), L-Choline Bitartrate, Digestive Enzyme Complex (DigeZyme - Alpha-Amylase, Neutral Protease, Cellulase, Lactase, Lipase), Sweetener (Sucralose), Vitamin C (L-Ascorbic Acid), Sweetener (steviol glycosides from stevia), Zinc Bisglycinate, Vitamin E (D-Alpha Tocopherol Acetate), Selenium Enriched Yeast, Colour (Anthocyanins), Ferrous Bisglycinate, Protected Lactic Acid Bacteria (Bifidobacterium bifidum, Lactobacillus acidophilus, Lactobacillus rhamnosus), Vitamin B3 (Nicotinamide), Copper Bisglycinate, Piperine (BioPerine), Vitamin A (Retinyl Acetate), Vitamin B5 (Calcium D-Pantothenate), Vitamin D3 (Cholecalciferol), Vitamin B6 (Pyridoxine Hydrochloride), Vitamin B1 (Thiamine Hydrochloride), Vitamin B2 (Riboflavin), Chromium Picolinate, Vitamin B9 (Folic Acid), Vitamin B7 (D-Biotin), Vitamin B12 (Methylcobalamin) Directions Mix 145g (approximately four and a half level 60ml measures) with 400ml of water and mix thoroughly in a shaker cup or blender. On training days take one serving mid morning between meals and one serving after your workout. On non training days take two servings, one mid morning between meals and one serving in the afternoon between meals. Safety Warning This product is a food supplement and should be used in conjunction with food as part of a healthy balanced diet, not as a substitute for such. This product is not intended to diagnose, cure or prevent any disease. This product is not intended for use by persons under the age of 16. Keep out of reach of young children. Do not exceed the stated daily dose. Made in a facility which handles: Products of Crustaceans, V products of Eggs, Gluten and products of Fish. Box Contains 1 x 4.35kg sealed container Manufacturer Contact Information Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK Review: Excellent stuff, i have done my webwork checked out ... - Excellent stuff, i have done my webwork checked out levels combo's of minerals and bcaa's through to creatine mixes this stacks up seriously good easy to mix good strong flavour but not sickly easy to consume on an empty stomach and has nice milkshake consistency. can easily be drank in the morning and pre workout and after the workout again great levels of bcaa and creataine as a stand alone this can save you money as it contains everything you need in one supplement and it really has shown results after consumption after a good workout. can only recommend this as it does exactly what it says. any questions drop me a message Review: Poor packaging lid tampered with - The product itself is great but today’s delivery not so much. The box was absolutely battered and open and the kid was unscrewed on the tub ## Features - All-in-One Weight Gainer To Simplify Your Supplement Routine: One Stop Xtreme has been formulated to replace the use of numerous supplements, allowing you to take only one protein shake to support muscle growth alongside a balanced healthy diet - High-performing Weight Gain Shake: One Stop Extreme high protein powder delivers a hit of protein, creatine, BCAAs and other beneficial nutrients to bodybuilders looking to make gains - contributing to the growth and maintenance of muscle mass - Boosting Stregth and Endurance: Reflex mass gainer protein powder contains creatine, that increases physical performance in successive bursts of short-term, high intensity exercise - With LAB2PRO friendly bacteria and Digezyme digestive enzymes - Nutritional Excellence: contains L-Leucine, Beta Alanine, Betaine Anhydrous and Taurine, along with essential vitamins and minerals aiding the maintenance of normal protein synthesis, function of the immune system and testosterone production - Premium Ingredients: Reflex only uses whey protein sourced from grass-fed cows, ensuring a high-quality weight gain protein powder that mixes well, with a smooth texture and a delicious taste - Produced in an Informed Sport Registered Facility: Suitable for vegetarians and Halal certified - Hormone-free, zero added sugars, artificial colors or soy protein, assuring a conscientious choice of food supplements for weight gain ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004LBPJA0 | | Age Range Description | Kid | | Allergen Information | Contains: Hazelnuts, Milk, Mustard | | Benefits | Muscle Growth | | Best Sellers Rank | 14,426 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 105 in Whey Nutrition Protein | | Brand | Reflex Nutrition | | Brand Name | Reflex Nutrition | | Country Of Origin | United Kingdom | | Customer Reviews | 4.4 out of 5 stars 119 Reviews | | Diet Type | Halal | | Diet type | Halal | | Flavour | Strawberries & Cream | | Global Trade Identification Number | 05033579013084 | | Item Dimensions | 20.3 x 20.3 x 30.1 centimetres | | Item Nype Name | HEALTH_PERSONAL_CARE | | Item Weight | 4350 Grams | | Item weight | 4350 Grams | | Manufacturer | Reflex Nutrition Ltd. | | Manufacturer Contact Information | Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK | | Manufacturer Part Number | 100041435032 | | Material Type Free | Sugar Free | | Model Name | Reflex Nutrition One Stop Xtreme Serious Mass PROTEIN POWDER 55g PROTEIN 10.3g BCAA'S, 73g low GI carbs 5,000mg Creatine & Added Vitamins | | Model Number | One Stop Xtreme | | Number of Items | 1 | | Package Type Name | Tub | | Product benefits | Muscle Growth | | Protein Source | Whey | | Recommended Uses For Product | Post-Workout | | Supplement Formulation | Multi-Supplement | | Unit Count | 4350.0 gram | ## Product Details - **Brand:** Reflex - **Diet type:** Halal - **Flavour:** Strawberries & Cream - **Item weight:** 4350 Grams - **Material Type Free:** Sugar Free - **Number of items:** 1 - **Product benefits:** Muscle Growth - **Protein source:** Whey - **Recommended uses for product:** Post-Workout - **Unit count:** 4350.0 gram ## Images ![One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Strawberries & Cream, 4.35kg) - Image 1](https://m.media-amazon.com/images/I/718fLb6T-6L.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent stuff, i have done my webwork checked out ... *by M***A on 8 February 2018* Excellent stuff, i have done my webwork checked out levels combo's of minerals and bcaa's through to creatine mixes this stacks up seriously good easy to mix good strong flavour but not sickly easy to consume on an empty stomach and has nice milkshake consistency. can easily be drank in the morning and pre workout and after the workout again great levels of bcaa and creataine as a stand alone this can save you money as it contains everything you need in one supplement and it really has shown results after consumption after a good workout. can only recommend this as it does exactly what it says. any questions drop me a message ### ⭐⭐⭐⭐⭐ Poor packaging lid tampered with *by K***N on 27 September 2025* The product itself is great but today’s delivery not so much. The box was absolutely battered and open and the kid was unscrewed on the tub ### ⭐⭐⭐⭐⭐ Highly recommended *by S***N on 7 September 2025* Love these chocolate and strawberry and cookies are best flavours after a few days of having the shakes i know the difference in my self i feel so much better all round health wise energy strength concentration etc ## Frequently Bought Together - Reflex Nutrition One Stop® Xtreme - Serious Mass Gainer - All in One Protein Powder - 55g Protein, 10.3g BCAAs, 5,000mg Creatine - Muscle Building Protein Shake (Strawberries & Cream, 4.35kg) - Reflex Nutrition Omega 3 - Omega 3 Capsules High Strength: 1000mg Fish Oil Supplement with 330mg EPA & 220mg DHA - Support Heart Health & Brain Function - Maintain Normal Blood Pressure (90 Capsules) - Reflex Nutrition Nexgen® Pro Multivitamins and Minerals for Immune Support (90 Caps) - For Active Lifestyles - Multi Mineral and Vitamins for Immune System - Vitamin D Magnesium Vitamin C Zinc --- ## 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.th/products/49485491-one-stop-xtreme-serious-mass-gainer-all-in-one-protein](https://www.desertcart.co.th/products/49485491-one-stop-xtreme-serious-mass-gainer-all-in-one-protein) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-30*