BSN True Mass 1200 - 4.73kg / Chocolate - Protein Blends

BSN True Mass 1200

4.73kg / Chocolate
£66.79
Skip to product information
BSN True Mass 1200 - 4.73kg / Chocolate - Protein Blends

BSN True Mass 1200

£66.79
Free Delivery When You Spend £100
Size4.73kg
00
Hours
00
Mins
00
Secs
FOR SAME DAY DISPATCH
  • Hit a calorie surplus fast—1,200+ calories in one convenient, great‑tasting shake.
  • Support muscle growth and recovery with 50+ g of multi‑phase protein per serving.
  • Train with steady energy thanks to complex carbs, including ground whole oats.
  • Enjoy an indulgent chocolate milkshake flavour with a thick, satisfying texture.
  • Perfect for hard gainers—use post‑workout, between meals or before bed to keep progress on track.

BSN True Mass 1200 — The High‑Calorie Mass Gainer That Actually Tastes Incredible

BSN True Mass 1200 Chocolate Milkshake 4.8kg mass gainer powder

Struggling to eat enough to grow? When your appetite and schedule can’t keep up with your goals, BSN True Mass 1200 steps in. This ultra‑premium mass gainer powder delivers a serious dose of high‑quality calories in minutes—so you can focus on lifting heavy, recovering faster, and stacking up consistent gains.

Built for hard gainers, busy athletes, and big appetites

True Mass 1200 combines a multi‑source protein blend (whey, casein, milk protein isolate and egg albumen) with a complex carbohydrate matrix featuring ground whole oats. The fast + slow protein release supports muscle repair for hours, while the carb blend keeps energy stable—ideal for tough sessions and long days. Added MCTs and fibre help make each serving thick, satisfying, and surprisingly easy to drink.

Big nutrition per serving—made simple

  • Approx. 1,248 kcal per 2 rounded scoops (320 g)
  • 54 g protein from fast and sustained sources to support muscle growth
  • 210 g carbohydrates (with oats) to refuel glycogen and power performance
  • Fibre and MCTs to round out a more complete, satisfying shake

Why athletes choose True Mass 1200

  • High‑calorie convenience: Pack in quality calories quickly—no constant cooking required.
  • Fast + slow protein: Whey hits fast; casein and milk proteins support you for longer.
  • Smoother energy: Oat‑enhanced carbs help fuel training without the sugar crash.
  • Seriously good taste: Rich Chocolate Milkshake flavour that makes bulking enjoyable.
  • Easy to fit into your plan: Roughly 4:1 carbohydrate to protein profile.

Who is it for?

True Mass 1200 is ideal for hard gainers, high‑output athletes, or anyone who struggles to hit daily calories from food alone. Use it to support muscle and strength goals, accelerate post‑workout recovery, or to bridge long gaps between meals.

How to use it for best results

  • Post‑workout: Refill glycogen and kick‑start recovery.
  • Between meals: Keep calories climbing on busy days.
  • Before bed: A satisfying shake to help you reach your target intake.

Pro tip: Blend with milk, banana, oats, or nut butter for even more calories—or stick to cold water for a lighter shake that still tastes amazing.

Product details

  • Brand: BSN
  • Product: True Mass 1200 (Chocolate Milkshake)
  • Size: 4.88 kg tub
  • Barcode (EAN): 5060245603539

Nutrition & Ingredients

BSN True Mass 1200, Chocolate Milkshake - 4800g
Nutrition Facts
Serving Size:2 Rounded Scoops (320g)
Servings Per Container:15
Amount
Per 100g
Amount
Per Serving
%RI*
Energy 1631.88 kcal 5222 kJ / 1248 0%
Fat 5.62 g 18 g 0%
Of which saturates 1.53 g 4.9 g 0%
Carbohydrate 65.62 g 210 g 0%
Of which sugars 5.94 g 19 g 0%
Fibre 4.69 g 15 g 0%
Protein 16.88 g 54 g 0%
Salt 0.28 g 0.89 g 0%
Sodium 111.25 mg 356 mg 0%

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

Ingredients:Sodium

Other ingredients:Complex Carbohydrate Blend (Maltodextrin, Oat Flour, Polydextrose), Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Milk Protein Isolate, Micellar Casein, Hydrolyzed Whey Protein, Egg Albumen), (Emulsifier: Soy Lecithin), Sunflower Oil Powder [MILK], Fat Reduced Cocoa Powder (3.7%), Flavourings [MILK], Medium Chain Triglyceride Powder [MILK], Thickeners (Cellulose Gum, Xanthan Gum, Guar Gum, Gum Arabic), Sweeteners (Acesulfame Potassium, Sucralose), Glutamine Peptides.

Directions & Warnings

WarningsAllergen Warning: Manufactured on equipment, which processes products containing milk, egg, soybeans, wheat, and tree nuts. ALLERGEN INFORMATION: Contains Milk, Egg, Wheat and Soy (Lecithin) ingredients.

Calories 1230kcal kcal
0%
RDI
Protein 50g g
100%
RDI
Fat 16g g
0%
RDI
Sat Fat 5g g
0%
RDI
Salt 0 g
0%
RDI
Carbs 222g g
0%
RDI
Values per serving
Please note that this information may be subject to change.
For the most accurate and up-to-date details, please refer to the product packaging.

Container Size

4.73kg

Serving Size

310g

Cost Per Serving

£4.38
per serving

Barcodes

4.73kg / Chocolate 5060245603539
4.73kg / Strawberry 5060245603546
4.73kg / Vanilla 5060245603522

Ingredients

  • Container Size: 4.73kgServing Size: 2 Scoops (310g)Servings Per Container: 15ChocolateAmount Per Serving:Total Calories: 1
  • 230Protein: 50gTotal Carbohydrates: 222g-Sugars: 16g-Dietary Fibre: 16gTotal Fat: 16g-Saturates: 5g-Trans: 0gCholesterol: 150MGSodium: 530MGIngredients:Complex Carbohydrate Blend (Maltodextrin
  • Whole Oat Flour)
  • Protein Blend (Whey Protein Concentrate
  • Calcium Caseinate
  • Milk Protein Isolate
  • Whey Protein Isolate
  • Micellar Casein
  • Egg Albumin
  • Hydrolysed Whey Protein
  • Glutamine Peptides)
  • Creamer (Sunflower Oil
  • Corn Syrup Solids
  • Sodium Caseinate
  • Mono \u0026amp; Diglycerides
  • Dipotassium Phosphate
  • Tricalcium Phosphate
  • Soya Lecithin
  • Tocopherols)
  • Cocoa (Processed with Alkali)
  • Natural \u0026amp; Artificial Flavors
  • Polydextrose
  • Lecithin
  • Gum Blend (Cellulose Gum
  • Xanthan Gum
  • Guar Gum
  • Gum Arabic)
  • MCT Powder (Medium Chain Triglycerides
  • Skimmed Dried Milk
  • Disodium Phosphate
  • Silicon Dioxide)
  • Vanillin
  • Sweeteners (Acesulfame Potassium
  • Sucralose).Allergens \u0026amp; Dietary Attributes:Contains milk and soya derivatives. Suitable for vegetarians. Please Note: Nutritional facts and ingredients may vary slightly between flavours.
  • 5 stars: 13 (54%)
  • 4 stars: 4 (17%)
  • 3 stars: 2 (8%)
  • 2 stars: 2 (8%)
  • 1 star: 3 (13%)
S
Sandeep
Best in class

Awesome

M
Marcus
Good buy, not the best mix.....

Only dislike about this, is that it don't mix as good as serious mass. Which is why I’ll always choose mad over true mass. Still good either way

M
MGS Customer
Whey Protein Powder is fine but came torn

The box the packet arrived in was damaged and power was spilling from it. Was disappointed. Even though it was is reasonable value for money, I wouldn't buy it again due to what happened.

But aside from that, the Whey Protein Powder does as it says.

D
Danial
Great taste

I stopped using this stuff as I didnt really see it working. It does have a great taste and mixes quite well but does it work, no

K
Kirsty
Best I've tried!

I NEVER write review's on shakes! But OMG the BEST chocolate protien shake ive tried! Its delicious! And ive tried loads! No bad after taste not bloating or pain! I go gym two hours aday and trying to build muscle i eat well! But this helps me get more macros i need! Will be buying again!! :)

N
Natalia
happy man

Happy husband , instagramming all his sporty staff

D
Daryl Bibby
Too much powder needed

Powder to milk ratio is all wrong. Not the best.

A
Aurimas Mikalauskas
Worth it

All good

S
S
Good flavour and easy to mix, thickens really fast and quite sickly though

Very good flavour with 3/4 water 1/4 whole milk, but after drinking it I notice it thickens on the edges and where you drink from the shaker and find myself scraping away this gelatine type stuff off the part I drink from, I assume this is from the xanthan gum in the ingredients; not sure why they would put xanthan gum in it but that and I find myself feeling quite sickly if im not sipping it throughout the hour. 7/10

0
0
With an Ice Cube

really good one! a trick to mix well in a shaker is put one ice cube and mix again. almost like a blender 👌

V
Vp
Really tasty

Excellent taste! Mixes well with a shaker! And delivery was super fast I loved it.

D
Dm
Perfect for bulking

Firstly this tasted amazing which is always so important when it comes to protein shakes. Secondly it really did help me put on mass, I used one of these shakes almost as a 4th or 5th meal in the day as I normally would struggle to hit my macros for carbs when bulking. You know you're getting good stuff with BSN and this did exactly what I needed to do, I will definitely be buying again when I run out.

P
Puskal Rai
Damage

It was damaged when I got it.

J
Junior
DO NOT BUY!!!

Product was terrible!! I think it was a scam as my powder had what could only be described as wood and metal shavings inside. Was sooo angry and disappointed, threw whole thing away obviously. Save your money buy from a safe respectable outlet.

M
Mark
Avoid buying this, maltodextrin wrecks your immune system

This has a lot of maltodextrin. First time I took even half of dose and it gave me a noticable blood sugar spike and chills (apparently because of sugar crash later). I am not a diabetic and absolutely healthy young person. Now 2 days after I started taking this crap I caught a cold and I never felt worse. I know if I wasn't taking it I wouldn't catch that cold and even if I would it would not be so severe. Now I am bed ridden with sinus infection instead of training at the gym. So think twice fellows gym goers. Read about it and found out that maltodextrin changes something inside your GI tract and this affects immune cells. I guess it is hard to find a decent weight gainer nowadays that doesn't impact your health negatively.... Can't they just use damn oat flour + sugar instead?? Obviously would be healthier alternative. Maltodextrine = bad.

O
Owen
Better than most, very sweet!

a bit too sweet for my liking, becomes hard to consistently drink because of how sugary the mix is. Tastes better than what I've had from other products but not something I can continue using but might be for you.

J
Josh Taylor
Very good

I've been using this for a couple months now and it's really helped me put some size on, haven't been training as much due to covid-19 but still haven't really lost much weight thanks to the shakes.

Flavour is really nice aswell.

Not heavy on my stomach either and I have quite a sensitive stomach to shakes so if your abit 50/50 on powder due to this reason I’d recommend you try this stuff.

W
Wisdom
Was 12 stone before it now 13 stone

The taste isn't bad or good but's vanilla so you can put whatever you want in there (it's why I got vanilla).

I think it lasted for over 15 days tbh.

When mixed it's not thick and it literally is just 2 scoops (albeit they are large - but they are provided so...).

You can drink it similar to a normal milkshake which is rare with protein powders.

I will be ordering again as I'm trying to get to 14 stone now, then I'll probably buy more of your lots stuff haha!

T
That Guy
My go to weight gainer

After years of trying different gainers and giving up then trying some more I finally found this one and this one actually works for me. It blends easier than any weight gainer I've had before, the powder is so fine. The taste is great in chocolate, never bothered to try any other flavour. It's a massive amount of calories if you go for the recommended amount so I usually only have one shake instead of the recommended two and take it before and after gym. Altogether, and through a diet increase, I've put on about 10kg over the last half a year which is amazing for me. Fully endorse this product, well it's worked for me anyway.

L
Liam
Mass

Tastes great

L
Ley
Incredible product

One of the best weight gainers. I have tried all sorts of weight gainers but this one is exceptionally and does what it says. so if you’re looking for a weight gainer, I recommend this product. 10/10

A
Ash
Its half OK

The powder is okay but i wouldn't recommend it to others, as the ingredients displayed on My GYm Supplements is false. And the ingredients showed on the product i have is very different. The flavour is okay, but after it gets to the bottom of the bag.. The flavour starts to taste very stale and bitter. like it wasn't just protein powder. it really loses it taste and flavour as you finish the to bottom of the bag. but when you mix it with ICE CUBES.. it taste better.. WITHOUT ICE CUBES. its very bad in flavour. BETTER WITH ICE CUBES or a cold milk drink.

S
Sam Pn
The quality was great

It was one of the best weight gainer that I had.

M
Mr H Osborne
What the hell is in this?

I was going to return this, however they wanted to charge me for the return, so I just threw it instead. Firstly, when I opened up the package it had plastic type feathers in it, some sort of manufacturing fault? I've used this brand before, and this is the first time I've had some sort of wheat like scum on the top/bottom of my shake despite mixing it. See photo's attached, absolutely vile.

Why Shop With Us?

Experience the difference with our premium service and quality products

MyGymSupplements

EASY TO NAVIGATE

Clear product details so you know exactly what you are getting

MyGymSupplements

Fast UK Dispatch

Order by 3pm (Mon-Fri) for same-day dispatch

MyGymSupplements

Fully tracked

With DPD's one hour delivery windows so you know when and where your parcel will be delivered

MyGymSupplements

Top Brands

Shop from the best in Gym Supplementation to give you the edge

Have you seen 👀

Shop Highlights

New Arrivals
New Arrivals

New Arrivals

Best Sellers
Best Sellers

Best Sellers

Protein
Protein

Protein

Pre-Workout
Pre-Workout

Pre-Workout

Best Sellers

View all