--- product_id: 48373881 title: "Serious Gainz - Vegetarian Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein (Vanilla, 5kg) | Mass Gainer, 40 Servings, 27g Protein, 460 kcal, Whey Isolate & Oat Flour, Weight Gain & Recovery (Vanilla)" brand: "the bulk protein company" price: "¥37954" currency: JPY in_stock: true category: "The Bulk Protein Company" url: https://www.desertcart.jp/products/48373881-serious-gainz-vegetarian-whey-protein-powder-weight-gain-mass-gainer store_origin: JP region: Japan --- # 74g carbs complex 27g protein blend 460 kcal per serving Serious Gainz - Vegetarian Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein (Vanilla, 5kg) | Mass Gainer, 40 Servings, 27g Protein, 460 kcal, Whey Isolate & Oat Flour, Weight Gain & Recovery (Vanilla) **Brand:** the bulk protein company **Price:** ¥37954 **Availability:** ✅ In Stock ## Summary > 🚀 Serious Gainz: Bulk smarter, recover faster, and never miss a rep! ## Quick Answers - **What is this?** Serious Gainz - Vegetarian Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein (Vanilla, 5kg) | Mass Gainer, 40 Servings, 27g Protein, 460 kcal, Whey Isolate & Oat Flour, Weight Gain & Recovery (Vanilla) by the bulk protein company - **How much does it cost?** ¥37954 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/48373881-serious-gainz-vegetarian-whey-protein-powder-weight-gain-mass-gainer) ## Best For - the bulk protein company enthusiasts ## Why This Product - Trusted the bulk protein company brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Creamy Shake Experience:** Mixes best with milk for a smooth, dessert-like shake that makes daily bulking a treat, not a chore. - • **Versatile Flavour Range:** Vanilla and more—enjoy your mass gainer in shakes, oats, or smoothies without flavor fatigue. - • **Carb-Loaded Energy Boost:** 74g of complex carbs to replenish glycogen and keep your workouts unstoppable. - • **Calorie-Packed Powerhouse:** Fuel your gains with 460 calories per serving—perfect for hardgainers chasing serious mass. - • **Triple-Action Protein Blend:** Fast + sustained amino acid release from soy, whey isolate, and casein for nonstop muscle recovery. ## Overview The Bulk Protein Company's Serious Gainz is a 5kg vegetarian mass gainer delivering 460 calories, 27g protein, and 74g carbs per serving. Designed for hardgainers, it combines soy, whey isolate, casein, and oat flour for fast and sustained muscle recovery. Ideal for post-workout nutrition, it mixes best with milk for a creamy texture and comes in multiple flavors to keep your bulking routine fresh and enjoyable. ## Description Product Description SERIOUS GAINZ by The Bulk Protein Company is a high-calorie mass gainer designed for hardgainers and anyone who struggles to maintain a calorie surplus. Delivering approximately 460 calories, 27g of protein and 74g of carbohydrates per serving, it supports size, strength and steady progress during bulking phases.Each serving combines soy protein, whey isolate, casein and oat flour to provide both fast and sustained amino acid release, helping support muscle recovery, lean muscle growth and improved training performance. Formulated as a versatile bulking protein powder, SERIOUS GAINZ can be mixed with water or milk depending on preference. Many users prefer milk for a smoother, richer texture, while adding liquid first and shaking thoroughly helps reduce clumps and improve consistency. Designed to support consistency, SERIOUS GAINZ helps meet increased nutritional demands throughout your bulking journey. The combination of protein sources and carbohydrates helps refuel muscles, restore glycogen levels and maintain daily calorie intake. Available in a range of flavours including Chocolate, Cookies & Cream, Vanilla, Strawberry and Banana, it fits easily into shakes, oats, smoothies and high-calorie recipes. Ingredients Ultra-Fine OAT Flour, Ultra-Premium Maltodextrin, SOY Protein Isolate, Flavouring, Anti-Caking Agent (Silicon Dioxide), Whey (MILK) Protein Isolate, Casein (MILK) Protein, Whey (MILK) Protein Concentrate, Sweetener (Sucralose) 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 Mix 3 Scoops (125g) with 400-500ML of water. Once shake prepared consume the same day. Safety Warning Advisory: Intended for use by healthy adults, over the age of 18. Please store in a cool, dry place, out of reach of children. Box Contains 1 x The Bulk Protein Company Serious Gainz Mass Gainer Protein Powder Vanilla 5 kg Manufacturer Contact Information Guinness Road Trading Estate, Unit 1& 3, Guinness Rd, Trafford Park, Stretford, Manchester M17 1SB See more ## Features - HIGH-CALORIE MASS GAIN FORMULA WITH ~27G PROTEIN PER SERVING – SERIOUS GAINZ by The Bulk Protein Company delivers approximately 460 calories, 27g protein and 74g carbs per serving, helping support a consistent calorie surplus. Designed for hardgainers and anyone looking to increase size and strength, it supports muscle recovery, training performance and steady weight gain when combined with a structured nutrition plan. - SUPPORTS MUSCLE GROWTH & POST-WORKOUT RECOVERY – Each serving provides a balanced blend of protein and carbohydrates to replenish energy after training and support lean muscle growth. The combination of soy protein, whey isolate, casein and oat flour delivers both fast and sustained amino acid release, helping refuel muscles, restore glycogen levels, maintain a high daily protein intake and support performance between sessions. - MIXES BEST WITH MILK FOR A SMOOTHER, MORE ENJOYABLE SHAKE – As a bulking protein powder, SERIOUS GAINZ can be prepared with water or milk, though many users prefer milk for a smoother, richer and more consistent texture. Adding liquid first, shaking thoroughly or using a blender helps reduce clumps and creates a creamier shake that’s easier to drink during heavy bulking phases. This preparation method makes each serving more enjoyable and supports daily consistency as calorie needs increase. - SMOOTH, SWEET FLAVOUR EXPERIENCE YOU CAN ENJOY DAILY – This whey protein powder delivers a rich, dessert-style taste that makes each protein shake enjoyable as part of your daily bulking routine. Available in popular flavours such as Chocolate, Cookies & Cream, Vanilla, Strawberry and Banana, it offers options suited to both classic and dessert-style preferences. Whether you mix it with water or milk, or blend it into oats and smoothies, the flavour stays satisfying across long bulking phases. - FILLING FORMULA DESIGNED TO HELP MAINTAIN A DAILY CALORIE SURPLUS – This mass gainer delivers a dense, satisfying shake that helps men and women stay on track with daily calorie targets during bulking phases. Its naturally filling consistency supports a sustained surplus, while starting with smaller servings, adding more liquid or spacing intake can help maintain comfortable, consistent nutrition throughout the day. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01AEWOIBA | | ASIN | B01AEWOIBA | | Age Range Description | Adult | | Allergen Information | Contains: Gluten, Milk, Oat, Peanuts, Soy | | Benefits | Muscle Growth, Weight Gain, Recovery, High Protein, High Calorie | | Best Sellers Rank | 880 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 15 in Whey Nutrition Protein | | Brand Name | The Bulk Protein Company | | Customer Reviews | 4.0 4.0 out of 5 stars (1,237) | | Customer reviews | 4.0 4.0 out of 5 stars (1,237) | | Diet Type | Vegetarian | | Flavour | Vanilla | | Guaranteed software updates until | unknown | | Is discontinued by manufacturer | No | | Item Dimensions | 29 x 29 x 26 centimetres | | Item Nype Name | Serious Gainz | | Item Weight | 5 Kilograms | | Item model number | B142 | | Manufacturer | Warrior | | Manufacturer | Warrior | | Manufacturer Contact Information | Guinness Road Trading Estate, Unit 1& 3, Guinness Rd, Trafford Park, Stretford, Manchester M17 1SB | | Manufacturer Part Number | B142 | | Material Type Free | Fat Free | | Model Name | Serious Gainz | | Model Number | B142 | | Number of Items | 1 | | Package Type Name | Tub | | Product Dimensions | 29 x 29 x 26 cm; 5 kg | | Protein Source | Whey | | Recommended Uses For Product | Post-Workout | | Total Servings Per Container | 40 | | Unit Count | 5000.0 gram | ## Product Details - **Brand:** The Bulk Protein Company - **Diet type:** Vegetarian - **Flavour:** Vanilla - **Item weight:** 5 Kilograms - **Material Type Free:** Fat Free - **Product benefits:** Muscle Growth, Weight Gain, Recovery, High Protein, High Calorie - **Protein source:** Whey - **Recommended uses for product:** Post-Workout - **Servings per container:** 40 - **Unit count:** 5000.0 gram ## Images ![Serious Gainz - Vegetarian Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein (Vanilla, 5kg) | Mass Gainer, 40 Servings, 27g Protein, 460 kcal, Whey Isolate & Oat Flour, Weight Gain & Recovery (Vanilla) - Image 1](https://m.media-amazon.com/images/I/71R3ZoN2TUL.jpg) ## Available Options This product comes in different **Flavor** options. ## Questions & Answers **Q: How many calories per shake ?** A: It has 468 kcal per 125g if this helps are its 30g protein and 81g carbs **Q: Is this product any good for rapid recovery post cycling training or I should look for a different kind of powder? Any recommendations?** A: this is designed as a mass gainer and can be used to help with recovery if on a budget. due to the level of calories per serving it can be split into 2 or even 3 servings instead of 1 mass gain serving. however there are specialist recovery ready to drink shakes available if you are not on a budget. I use for goodness shake recovery drinks from my local supermarket but at £2 per bottle it becomes expensive! hence buying this mass gainer **Q: I don’t want this for muscle but to just genuinely up my weight and add more calories. I am a women 5ft7 and under 8st. Have no clue about this stuff** A: Hi well you want a high carb meal replacement shake. If you type that in, you should get all the results on Google. Then you can pick the flavour etc. this wouldn’t be any good for weight gain as you require. I do PT and food etc. instagram me: focusonyou78 In box me. I can help you more that way. Free of charge **Q: My package came and seal was open and nearly off why would this be??** A: Sent this back ## Frequently Bought Together - The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Vanilla, 5kg) - Warrior Protein Shaker Bottle, Includes Wire Mixball Blender – 600ml – Perfect for Mixing Powdered Shakes, Clear, BPA Free, Dishwasher Safe - Warrior Creatine Monohydrate Powder – Micronised for Easy Mixing and Consumption – Proven to Improve Physical Performance / Recovery, 5g Servings (Unflavoured, 300g) --- ## 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.jp/products/48373881-serious-gainz-vegetarian-whey-protein-powder-weight-gain-mass-gainer](https://www.desertcart.jp/products/48373881-serious-gainz-vegetarian-whey-protein-powder-weight-gain-mass-gainer) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-26*