# The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry

The Bulk Protein Company Serious Gainz is a strawberry mass-gainer powder supplied in a 5kg tub. The listing describes a 125g serving as approximately 460 calories, 27g protein and 74g carbohydrates, aimed at people adding calories to a bulking diet.

- [Original product page](https://bargainpostbox.co.uk/product/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [View offer](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: The Bulk Protein Company
- Model: Serious Gainz
- Category: Beauty & Health > Vitamins & Supplements
- Price: 30.39 GBP
- Previous price: 39.99 GBP
- Discount: 24%
- Price checked: 2026-11-12T18:10:08.782Z
- Rating: 4.1 / 5
- Reviews: 1652

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Provides a calorie-dense shake for adding energy and carbohydrates to a bulking diet.
- Listing states 40 servings from the 5kg tub, with preparation instructions for three scoops and 400–500ml of liquid.
- The listed protein blend includes soy and dairy sources, alongside oat flour.

## Pros

- A large tub and stated 40 servings suit buyers planning regular use.
- The stated calorie and carbohydrate content may help people who find it difficult to reach calorie targets through meals alone.
- Can be mixed with water or milk, according to the listing.

## Cons

- The listed allergens include milk, soy and oat, with possible traces of egg, gluten, peanuts and tree nuts.
- A 125g serving is a substantial shake, so it may not suit buyers who prefer smaller, lighter portions.

## Specifications

### Identity
- Brand: The Bulk Protein Company
- Model: Serious Gainz
- Flavour: Strawberry
- Diet type: Vegetarian
- Protein sources: Soy, Whey
- Recommended use: Post-Workout
- Country of origin: United Kingdom
### Nutrition and quantity
- Servings per container: 40.0
- Calories per serving: 460
- Protein per serving: 27g
- Carbohydrates per serving: 74g
- Serving preparation: Mix 3 Scoops \(125g\) with 400-500ML of water. Once shake prepared consume the same day.
- Allergen information: Contains: Egg may contain, Gluten may contain, Milk, Milk may contain, Oat, Peanuts may contain, Soy, Tree nuts may contain
- Material type free: Fat Free
### Dimensions and installation
- Dimensions listed: 29 x 29 x 26 centimetres
- Weight listed: 5 Kilograms
- Package type: Tub

## Before you buy

- Listing details are inconsistent: the title specifies strawberry, the product details claim 27g protein, 460 calories and 74g carbohydrates per serving, while other manufacturer copy gives protein as 26–28g, calories as 400+ and carbohydrates as 70–80g. Treat nutrition figures as claims and check the current label. The product is described as fat free despite listing milk-derived ingredients. Follow the stated serving directions and note the advisory limits use to healthy adults over 18.

## A good fit for

- People looking for a high-calorie powder to supplement a planned bulking diet.
- Buyers who want a strawberry-flavoured powder with both soy and dairy protein sources.

## Less suited to

- Anyone avoiding soy, milk or oats, or who needs to avoid the listed potential allergen traces.
- Buyers seeking a low-calorie or small-serving protein shake.

## Customer feedback

Customer feedback reports positive impressions of effectiveness, serving size and value, but experiences with texture, mixability, taste and drinkability vary. Some find it mixes well and tastes pleasant, while others describe a chalky or powdery texture and find it difficult to drink. For a shake intended as a substantial calorie addition, taste and texture may affect how easy it is to use regularly. These views are customer impressions and do not verify the listed nutrition claims.
- Positive themes: Customers report finding the powder effective.
- Positive themes: Customers appreciate the large serving size and describe it as good value.
- Negative themes: Some customers describe a chalky or powdery texture.
- Mixed feedback: Feedback on taste, drinkability and mixability is divided.

## Frequently asked questions

### How much powder does the listing recommend per shake?
The directions say to mix 3 scoops \(125g\) with 400–500ml of water and consume the prepared shake the same day.
### What nutrition does the listing claim per serving?
One listing section states approximately 460 calories, 27g protein and 74g carbohydrates. Other manufacturer copy gives ranges or lower-bound wording, so check the product label for the current figures.
### Which allergens are listed?
The listing names milk, oat and soy, and says egg, gluten, peanuts and tree nuts may be present.
### Can it be mixed with milk?
Yes. Manufacturer copy says it can be mixed with water or milk. Milk adds another dairy source to an already milk-containing product.

## Alternative options

- [Huel Black Edition Powder \| 17 Meals 40g Protein \| Chocolate \| 17 Servings \| 8g Fibre \| 27 Vitamins and Minerals \| Gluten Free \| 40g of plant-based Protein powder](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [Huel Complete Protein Powder \| 26 Servings \| Chocolate Fudge Brownie \| 20g Protein Per Serving \| Gluten-Free \| No Soy \| Plant-Based Vegan Protein Powder](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [Myprotein Snickers® Impact Whey Protein Powder – White Chocolate & Peanut Flavour \| 1 kg \(32 Servings\) \| 20g Protein per Serving, Low Sugar, Under 120kcal](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [NAKED Mass - Unflavored Natural Weight Gainer Protein Powder - 3531g - GMO, Gluten, and Soy Free. No Artificial Ingredients - 1,216 Calories per Serving](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [Warrior Serious Protein 4.5g, High Protein Powder, Soy and Milk Shake Blend \| 24g Protein Per Scoop, No Added Sugar, Low Fat, Protein Shake Powder, 150 Servings, Easy Mix \(Chocolate Milkshake\)](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [APE Nutrition Beef Protein Powder Cacao & Maple Sea Salt Grass-Fed 1.2KG \| Rich in Collagen & Amino Acids - Supports Muscle Growth & Recovery](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [USN Muscle Fuel Anabolic All-In-One Muscle Mass Gainer, Strawberry Flavour - 2kg, 54g Protein Powder, 5g Creatine Powder & 5g BCAA Powder For Maximum Muscle Growth, Post Workout Recovery Drink Mix](https://bargainpostbox.co.uk/visit/usn-muscle-fuel-anabolic-strawberry-mass-gainer)
- [EarthChamp Vegan Protein Powder Vanilla 1kg Plant Based, High Protein \| No Artificial Sweeteners - Dairy, Gluten, Lactose & Soya Free, with Vitamin D, B6 & B12, Ideal for Shakes & Smoothies](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [Bulk Vegan Protein Powder, Vanilla, 1 kg \| Plant Based Protein Shake, New & Improved Formula, 28 Servings](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)
- [SCI-MX Ultra Muscle - Protein Powder for Muscle Development + 23 Vitamins & Minerals - Strawberry • 5g Creatine + 7.8g BCAAs per Serving • 1.5kg](https://bargainpostbox.co.uk/visit/sci-mx-ultra-muscle-strawberry-protein-powder-1-5kg)
- [SCI-MX Pro-V Gain • Vegan Vanilla Flavour • 900g \(20 servings\) \| SCI-MX Pro-V Gain • Vegan Vanilla Flavour • High Protein Formula • Muscle Growth Support • Plant Based Nutrition](https://bargainpostbox.co.uk/visit/sci-mx-pro-v-gain-vegan-vanilla-protein-powder-b09xbsl6m5)
- [Optimum Nutrition Serious Mass Protein Powder, 2.73 Kg, 8 Servings \| Chocolate, High Calorie Mass Gainer with Vitamins, Creatine and Glutamine, Supports Muscle Building](https://bargainpostbox.co.uk/visit/the-bulk-protein-company-serious-gainz-strawberry-mass-gainer)

## Add-ons

- [Serious Shredz Bulk Diet Whey Protein Powder 4kg Meal Replacement Shake \| Diet Whey Protein, 133 Servings, L-Carnitine, Green](https://bargainpostbox.co.uk/visit/bulk-protein-company-serious-shredz-diet-whey-4kg)
- [Warrior Creatine Monohydrate Powder 500g Pure Micronised \(166 Servings\) \| Creatine Supplement for Women & Men, Easy Dissolve,](https://bargainpostbox.co.uk/visit/warrior-creatine-monohydrate-powder-500g)

## Images

![The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry — 1](https://bargainpostbox.co.uk/i/F57tCmVnSrNIeEVPyLXmiq6V8J0iICkJ7T-j8Ls4ZL3DcMcKSuKVDYZytC-VWRyYBznI8eT2ghPFP78vwQiPmXfFuEGbDVyzX05c0y3rkxurTmdPts7_4QXL.jpg)

![The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry — 2](https://bargainpostbox.co.uk/i/UcvKD8UjZJz2e1D0hy_htZc_IHDKRyHXND7VBaSm65fcV_WjTFhydDFc-DzTnFIi2ML-pvNc08GnPJCQbN_Ncw7zGE7vYwkJmWy-ql1b04tWkLodbmCzZPX-.jpg)

![The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry — 3](https://bargainpostbox.co.uk/i/TXdAQkW59vUen2pZa5I4O0sctEuGxhHXQwWnlBSrWOEtr5K6y6fGI8ifKEYrBdnpVEec7fydvdYM9kLmgLUcOnn7KaRYvw_H5U9FgDcWPJWEX205Lkdz6Chj.jpg)

![The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry — 4](https://bargainpostbox.co.uk/i/LGqzohAWr9QktDRbUwjxYE4pQy1Tmr6jsSMQpVMdh-8zuAtRPGQQia1-MuNGPtHcPPWquL5Lei56vgCP4g5jbZbX7u1_mbJHl38n4QbsLHlM0v6BZiMg7zkv.jpg)

![The Bulk Protein Company Serious Gainz 5kg Mass Gainer, Strawberry — 5](https://bargainpostbox.co.uk/i/CmsD923l8QVsSd0RFp3elai5OG9BTfxOGQvbgnS2EEwF2tlw7Rb9AdhyLs3F2y2omsCodRe2Vmjc4DzH3Bsx1a9-NlS1LuUgM2jStbE-g2KcZOcMo_an6447.jpg)