

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.
🚀 Bulk smarter, not harder — Serious Gainz for serious pros.
The Bulk Protein Company's Serious Gainz is a UK-made, high-calorie mass gainer designed for hardgainers and fitness pros aiming for steady muscle growth and weight gain. Each 125g serving packs 460 calories, 27g of a premium protein blend (soy, whey isolate, casein), and 74g of carbs to fuel recovery and performance. Versatile and smooth, it mixes best with milk and comes in five indulgent flavours, supporting your daily calorie surplus with a satisfying, easy-to-drink formula.











| ASIN | B07CGHS11Z |
| ASIN | B07CGHS11Z |
| Age Range Description | Adult |
| Allergen Information | Contains: Oat, Peanuts, Soy |
| Best Sellers Rank | 897 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 18 in Whey Nutrition Protein |
| Brand Name | The Bulk Protein Company |
| Country Of Origin | United Kingdom |
| Country of origin | United Kingdom |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,875) |
| Customer reviews | 4.1 4.1 out of 5 stars (1,875) |
| Diet Type | Vegetarian |
| Flavour | Chocolate |
| 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 |
| 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 | Soy, Whey |
| Recommended Uses For Product | Post-Workout |
| Total Servings Per Container | 40.0 |
| Unit Count | 5000.0 gram |
J**A
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.
J**N
HELL YEAH!!
OMG 5 kilos of it!! Absolute bargain!! Ok so I have used it It mixes very easy, not as thick compared to some other shakes but not a problem, it has good protein to carb ratio The flavour yeah it is chocolate-ish but although not heavenly chocolate it is very pleasant to drink, if you wanted to make it really chocolatey get some raw Coco from the shops and mix it in I am thrilled to bits omg 5 kilos of it 😃😃 All in all well worth the money, tastes better than more expensive ones I’ve bought for much less, I will definitely purchase again ...hmmm if only they had Raspberry ripple 😋 10/10 for the amount 5 kilos 😲
J**S
Terrible powder, flavour and does not blend.
Waste of money, the powder hardily blends into a shake even after thoroughly blending. Weak chocolate flavour and just leaves the powder around the inside of your mouth after each drink. This is a poor product and would not recommend to anyone.
C**S
Good value and lots of it
Good value for the size of the tub (5kg). The flavour was pretty good and it dissolved and mixed fairly well and did not taste gritty like some. It could be added to water, milk or even coffee and tasted fine. Scoop was provided.
C**G
Great value gainer. I like it!
I've been using this for about 3 weeks now and really like it. It's cheap, decent quality, and does the job. The tub was fully sealed unlike some reviewers. I bought the chocolate flavour. It's actually quite nice and a lot better tasting than most powder shakes. Not sure how those who are complaining about the poor mixing are blending theirs, but I use my Nutri Ninja blender and it mixes great. If you don't drink it fairly quickly you do get a little sediment at the bottom (and I mean a little) but a few swirls of your drink container and it's fine. It's easy to get down. I weighed it out and find 4 flat scoops in 500ml of water gives you the 125g you need for 468 calories and 30g of protein. If you wanted to to use 500ml of whole milk instead then that's going to give you an additional (approx.) 300 calories and 17g of protein. So it really depends on how many surplus calories you're needing to start gaining. I've been doing a lot of cardio recently so I have found this gainer actually just keeps my weight consistant - which is great. I know if I wasn't doing cardio then I would definitely have gained weight. I currently have one shake a day but I may increase that to two soon. I expect to see a gain then (will let you know). Remember that this is a food supplement to add surplus calories and protein to your diet. Not some miracle powder. It does what its designed to do. Bar that, I've experienced no ill side effects. No bloating or excessive gas. So no complaints from the other half. If I suddenly go blind or grow an extra testicle in a few weeks I'll let you know. All in all I'm happy with it and think it's great value. I'll definitely be buying another tub!
A**Y
Not for me.
You get your moneys worth with the quantity, but I’m not a fan of it. I’ve used a shaker bottle, mini blender and a proper blender. It leaves a horrible layer at the back of your throat. I don’t find it easy to drink if I’m honest. The flavour doesn’t really blow your mind either. I’ve only used it for a few days, so I don’t think it would be fair rating its effectiveness. I’m not going to buy again just because of the layer of powder it leaves in your throat.
F**Y
My second order
This was a reorder for my son he swears by this product for maintaining a good balance in his diet, he is not a body builder but just likes to keep his calories up or he becomes to thin, he say it's brilliant and like the taste.
D**N
Let's get serious
Been using this a month. The key areas: taste, by no means does this taste bad. You will not wince or wretch at the flavour. I got the choc and it's basically a mild flavour. Imagine hot chocolate with half the amount of powder, milky chocolate. In no way bad! Plus I always add a scoop of choc whey (bulk) which bumps the protein to 50 and adds extra flavour. Works perfect. Texture, I use a basic mesh shaker with semi milk and have had no issues with clumping. Yes there is the very occasional small lump but so what. It does have a slight grainy texture which is a bit odd at first but I actually prefer it now. When I have a whey shake I actually miss it though I wasn't sure about it at first. Price, there are better tasting options out there but when u factor the cost I don't personally see the justification, but hey if money isn't an issue then yeh maybe go with another. So all in all I love it, to those saying it tastes horrible, go suck on a paracetamol, that's a horrible taste this is good, not great but good and a mesh shaker works perfect for me, maybe don't blend it, maybe that's causing the issues mentioned by others. So yeh give it a go😄👍
M**D
Thought I’d try a different protein powder and I’m sure it will do the job, But it does not mix well at all and there is very little in the way of chocolate taste. In fact it doesn’t really taste that good as you can taste more of the oat based ingredient. Find a different protein powder to buy and I’ll be going back to my usual one.
Trustpilot
2 weeks ago
3 days ago