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💥 Bulk smarter, recover faster, taste better.
Reflex Nutrition Instant Mass Heavyweight is a high-calorie mass gainer delivering over 1000 kcal and 60g of premium multi-source protein per serving, enhanced with 3g creatine and 18 vitamins and minerals. Designed for serious athletes and hard gainers, it supports muscle growth, recovery, and sustained energy with a delicious chocolate flavor—all produced in a trusted, Halal-certified UK facility.









| ASIN | B01E483MDK |
| ASIN | B01E483MDK |
| Age Range Description | Adult |
| Allergen Information | Contains: Egg may contain, Milk, Oat, Soy, Wheat |
| Benefits | Muscle Growth |
| Best Sellers Rank | 1,954 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 24 in Protein Nutrition Blends 44 in Diet Shakes |
| Brand Name | Reflex Nutrition |
| Country Of Origin | United Kingdom |
| Country of origin | United Kingdom |
| Customer Reviews | 4.1 4.1 out of 5 stars (929) |
| Customer reviews | 4.1 4.1 out of 5 stars (929) |
| Diet Type | Halal |
| Flavour | Chocolate |
| Global Trade Identification Number | 05033579001500 |
| Is discontinued by manufacturer | No |
| Item Dimensions | 20.3 x 20.3 x 25 centimetres |
| Item Nype Name | HEALTH_PERSONAL_CARE |
| Item Weight | 2000 Grams |
| Item model number | Instant Mass Heavyweight Protein |
| Manufacturer | Reflex Nutrition Ltd |
| Manufacturer | Reflex Nutrition Ltd |
| Manufacturer Contact Information | Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK |
| Manufacturer Part Number | 100044200030 |
| Material Type Free | Caffeine Free, GMO Free |
| Model Name | Reflex Nutrition Instant Mass Heavyweight | Mass Protein Powder |
| Model Number | Instant Mass Heavyweight Protein |
| Net Content Volume | 10.4 Litres |
| Number of Items | 1 |
| Package Type Name | Tub |
| Product Dimensions | 20.3 x 20.3 x 25 cm; 2 kg |
| Protein | 60 g |
| Protein Source | Whey |
| Recommended Uses For Product | During Workout, Post-Workout, Pre-Workout |
| Supplement Formulation | Multi-Supplement |
| Unit Count | 2000.0 gram |
C**S
Great product.
Not a food person in the morning so this works great. Good taste and mixes well. Not gritty, good value and feel much better after a few weeks. Can't comment on gym use as I don't go.
C**D
100 percent works 100 percent tastes great
best protein shake I've tried by far, the chocolate flavour isn't to intense and the texture isn't to thick, blends up very nicely 100 percent would recommend for people that have problems finding a nice flavour or thickness, this one sits just right bang on will only be buying this from now on and you cant complain at that price its an absolute steal product does what it says and tastes great whilst doing its job
B**N
Decent stuff
Just starting off at the gym again trying to bulk and this definitely has helped, it's impossible to get a full serving into one shaker so I have to do it in 2. This isn't a milkshake from your local restaurant so don't expect it to be tasting like so. Taste isn't the greatest but definitely isn't the worst. But I'm not using it for taste so it is what it is. I've put on around 8/9lbs since using it over the past couple months (had a period where I stopped using it) if new to this then start off with half the full serving for the first week as going all in with a full one can cause stomach problems (bloating, wind, nausea etc) im taking along side cyclone, at different intervals, obviously, and also only using cyclone every other day. It's not no miracle shake, so don't expect unrealistic results, eating a full breakfast, lunch, dinner and snacks in between then this and hour or so before bed has worked for me. Can't really say if it works for performance as I'm still figuring that out myself. Will update once I know more but so far so good.
S**M
Tasty, helps put on weight and mixes well
Husband loves this! He has purchased this 3 times now, uses it in between meals and on days where he’s out for work and doesn’t have time to grab something to eat. It’s been great for helping him put on weight. Really lovely flavour and mixes well with water or milk, unlike other reputable protein shakes that have a strange after taste and texture. The 5kg bag lasts a while, so definitely worth it and it comes in an easily resealable bag with a scoop. Only down side is the sugar content is very high! Also the recently price went up, which is a shame as had bought it around £28 couple months ago.
S**T
Ok
Tastes ok. But the tub is about 3 times too big for how much it actually contains. Reduce the amount of plastic or fill the tub
S**Y
Ffs.
Bought this as I couldn't get my normal order. This shake is awful! Got the chocolate flavour, it does not mix in a shaker. There was a good half a scoop clumped in the bottom. I put it in the blender and obviously it sorted it. Taste test time. Wish I bloody hadn't. It tastes somewhere between plastic and petrol. DO NOT WASTE YOUR MONEY. I will deffinetly pay more attention as to when I'm running low on my usual stuff. Fyi - MUSCLETECH MASS TECH EXTREME 2000 is the one to go for. Mixes perfectly and tastes amazing. 10/10
F**Y
Excellent
I bought this for my son who is not a gym lover but is a manual worker (Plaster/ builder) who finds it very hard to keep wieght about him, he finds this keeps him healthy with a good gut, it is very good value for money smooth when made up with a nice flavour. I will be buying again
J**N
Great product
Great taste, definitely helps you gain weight and muscle mass. Will be ordering again
O**H
👍👍👍
L**A
Mein Freund hat das Pulver über meinen Account bestellt. Er kennt das Produkt und ist von der Qualität überzeugt. Leider wurde entgegen der Beschreibung eine andere Geschmacksrichtung geliefert. Bei Reklamation hatte ich jedoch einen sehr freundliche Kundenservice und konnte es ohne Probleme zurück schicken.
Trustpilot
2 months ago
3 weeks ago