---
product_id: 48373881
title: "The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Vanilla, 5kg)"
brand: "the bulk protein company"
price: "¥30783"
currency: JPY
in_stock: true
reviews_count: 10
category: "The Bulk Protein Company"
url: https://www.desertcart.jp/products/48373881-the-bulk-protein-company-serious-gainz-whey-protein-powder-weight
store_origin: JP
region: Japan
---

# 81g carbs for energy 30g protein blend 468 kcal per serving The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Vanilla, 5kg)

**Brand:** the bulk protein company
**Price:** ¥30783
**Availability:** ✅ In Stock

## Summary

> 💥 Serious calories, serious gains — don’t just bulk, dominate your bulk!

## Quick Answers

- **What is this?** The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Vanilla, 5kg) by the bulk protein company
- **How much does it cost?** ¥30783 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-the-bulk-protein-company-serious-gainz-whey-protein-powder-weight)

## 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

- • **Calorie Powerhouse:** Fuel your gains with 468 calories per serving—perfect for hardgainers chasing serious mass.
- • **Creamy Shake Experience:** Mixes best with milk for a smooth, dessert-like shake that makes daily bulking a treat, not a chore.
- • **Carb-Loaded Energy Boost:** 81g of quality carbs to replenish glycogen and keep your workouts unstoppable.
- • **Flexible & Filling Formula:** Customize thickness and calorie intake to stay consistently in surplus without feeling bloated.
- • **Triple-Action Protein Blend:** Fast, medium, and slow-release proteins (whey isolate, soy, casein) for nonstop muscle recovery.

## Overview

Serious Gainz by The Bulk Protein Company is a 5kg high-calorie mass gainer powder delivering 468 calories, 30g of a multi-source protein blend, and 81g carbs per serving. Designed for hardgainers and bulking pros, it supports muscle growth, recovery, and sustained energy with a smooth, customizable shake experience available in multiple dessert-inspired flavors.

## Description

Product Description SERIOUS GAINZ by The Bulk Protein Company is a high-calorie mass gainer protein powder designed for hardgainers and anyone who struggles to eat enough to stay in a calorie surplus. Delivering approximately 468 calories, 30g of protein and 81g of carbohydrates per serving, it is positioned as one of the high calorie drinks for weight gain, helping support size, strength and steady progress during bulking phases. Each serving combines soy protein powder, whey isolate protein powder, casein protein powder and oat flour to provide both fast and sustained amino acid release, supporting muscle recovery, lean muscle growth and improved training performance. Formulated as a bulking protein powder, SERIOUS GAINZ can be mixed 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 is easier to drink during heavy bulking periods. Its naturally thick, dessert-style consistency can be customised to suit your preference—use more liquid for a lighter protein shake, blend with ice or fruit for added smoothness, or keep it dense for a more filling post-workout option. This flexibility allows you to tailor each serving to your taste, routine and daily calorie goals. SERIOUS GAINZ is designed to support consistency, helping you meet increased nutritional demands throughout your bulking journey. The balanced combination of protein sources and slow- and fast-digesting carbohydrates helps refuel muscles, restore glycogen levels and maintain high protein intake across the day. Available in popular flavours including Chocolate, Cookies & Cream, Vanilla, Strawberry and Banana, it offers a smooth, sweet flavour experience that fits naturally 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

Review: Using it for years - Been using this product for years... Started at £25 about 7 years ago obviously due to British pound going down in value the price has risen. Still a good price. High carb shake with minimul sugars. I have bought similar products from Holland and Barrett and The sugar content is half the carb intake. I went from 10st to 17 on this in few years I have been taking. I bulk in winter and this helps... after a high calorie breakfast I also down one of these. People say it doesn't go well with water. No protein shakes you will ever take will taste well with water. I use 350ml water 250ml milk and it tastes good! I did a bulk last year I was 15.5st and went upto 18.5 by summer. I gained 1st extra in muscle. I went down to 16.5 off bulk and stayed at that weight even on The cut. I have around ,18% body fat. 22in winter. Also buy serious protein to add that extra 25g to the protein intake. 1.5-2g of protien per kg of body weight. If you not making gainz then you probably not doing this. This product has helped me a lot through out the years and I stand by serious protein and serious gainz to make my gainz.
Review: Pretty Good - Just started with Protein powder again after workouts. I’d used the Amfit stuff at first which was good but I thought I’d try a bigger Bulk tub. This was on offer with a further 10% off so a real bargain. Comes in the big black tub with snap seal and a scoop. Each scoop gives decent Carbs and Protein for your after workout/run nutrition. I got the strawberry flavour which is reasonably palatable, so of the powders are truly awful but this is pretty good. I have noticed if you make it up and leave it for a while it does develop a strange taste and texture so I tend to mix it up as I need it. It comes in various flavours which I haven’t tried but if they are the same as this one they will be good. I mix it with water, not tried milk but I would think it would be even better with Milk. All in all I’ll definitely buy again and at this price you can even double up if required.

## Features

- HIGH-CALORIE MASS GAIN FORMULA WITH 30G PROTEIN PER SERVING – SERIOUS GAINZ by The Bulk Protein Company is positioned as one of the high calorie drinks for weight gain, delivering approximately 468 calories, 30g protein and 81g carbs per serving to help hardgainers stay in a consistent calorie surplus. Designed for anyone needing extra calories to increase size and strength, it supports muscle recovery, training performance and progressive weight gain when paired with a structured eating 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 powder, whey isolate protein powder, casein protein powder and oat flour delivers both fast and sustained amino acid release, helping refuel muscles, restore glycogen levels and maintain a high daily protein intake for better recovery and improved 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 |
|---------------|-------|
| - Saturates | 0.65 g |
| - Sugars | 0.42 g |
| ASIN | B01AEWOIBA |
| ASIN  | B01AEWOIBA |
| Age Range Description | Adult |
| Allergen Information | Contains: Gluten, Milk, Oat, Peanuts, Soy |
| Best Sellers Rank | 652 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 13 in Whey Nutrition Protein |
| Brand | The Bulk Protein Company |
| Carbohydrate | 62.17 g |
| Country of origin | gb |
| Customer Reviews | 4.0 4.0 out of 5 stars (8,425) |
| Customer reviews | 4.0 4.0 out of 5 stars (8,425) |
| Date First Available | 10 Jan. 2016 |
| Energy (kcal) | 373.56 kcal |
| Fat | 3.79 g |
| Fibre | 2.25 g |
| Format | Powder |
| Is discontinued by manufacturer  | No |
| Item model number  | B142 |
| Manufacturer  | Warrior |
| Manufacturer contact | Guinness Road Trading Estate, Unit 1& 3, Guinness Rd, Trafford Park, Stretford, Manchester M17 1SB |
| Product Dimensions  | 29 x 29 x 26 cm; 5 kg |
| Product Name | Serious Gainz |
| Serving Size | 3 scoops, 3 scoops |
| Storage Instructions | Please store in a cool, dry place out of reach of children. |
| Units | 5000.0 gram |
| Weight | 5 kg |

## Product Details

- **Brand:** The Bulk Protein Company
- **Diet type:** Vegetarian
- **Flavour:** Vanilla
- **Item weight:** 5 Kilograms
- **Material Type Free:** Fat Free
- **Number of items:** 1
- **Protein source:** Whey
- **Recommended uses for product:** Post-Workout
- **Servings per container:** 40
- **Unit count:** 5000.0 gram

## Images

![The Bulk Protein Company, SERIOUS GAINZ - Whey Protein Powder - Weight Gain, Mass Gainer - 30g Protein Powders (Vanilla, 5kg) - Image 1](https://m.media-amazon.com/images/I/71R3ZoN2TUL.jpg)

## Available Options

This product comes in different **Size, 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Using it for years
*by J***A on 6 January 2026*

Been using this product for years... Started at £25 about 7 years ago obviously due to British pound going down in value the price has risen. Still a good price. High carb shake with minimul sugars. I have bought similar products from Holland and Barrett and The sugar content is half the carb intake. I went from 10st to 17 on this in few years I have been taking. I bulk in winter and this helps... after a high calorie breakfast I also down one of these. People say it doesn't go well with water. No protein shakes you will ever take will taste well with water. I use 350ml water 250ml milk and it tastes good! I did a bulk last year I was 15.5st and went upto 18.5 by summer. I gained 1st extra in muscle. I went down to 16.5 off bulk and stayed at that weight even on The cut. I have around ,18% body fat. 22in winter. Also buy serious protein to add that extra 25g to the protein intake. 1.5-2g of protien per kg of body weight. If you not making gainz then you probably not doing this. This product has helped me a lot through out the years and I stand by serious protein and serious gainz to make my gainz.

### ⭐⭐⭐⭐⭐ Pretty Good
*by T***N on 15 February 2024*

Just started with Protein powder again after workouts. I’d used the Amfit stuff at first which was good but I thought I’d try a bigger Bulk tub. This was on offer with a further 10% off so a real bargain. Comes in the big black tub with snap seal and a scoop. Each scoop gives decent Carbs and Protein for your after workout/run nutrition. I got the strawberry flavour which is reasonably palatable, so of the powders are truly awful but this is pretty good. I have noticed if you make it up and leave it for a while it does develop a strange taste and texture so I tend to mix it up as I need it. It comes in various flavours which I haven’t tried but if they are the same as this one they will be good. I mix it with water, not tried milk but I would think it would be even better with Milk. All in all I’ll definitely buy again and at this price you can even double up if required.

### ⭐⭐⭐⭐ Decent protein powder for the price
*by M***. on 5 May 2025*

Mixes well with no clumping, the cookies and cream taste is generally good, but there is a powdery gritty aftertaste which I'm not keen on. I can deal with it for the price as I can't afford the prices of the optimum nutrition protein powder now both me and my son are using it.

## 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)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-19*