Reflex Nutrition Instant Mass Heavyweight Mass Gainer Over 1000 Kcal | Desertcart Australia
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving, 60g Protein, Creatine - High Calorie Post Workout or Before Bed Protein Shake (Blueberry, 5.4 kg)
💥 Unlock your ultimate mass gain with every creamy sip!
PROTEIN POWERHOUSE - 60g of high-quality protein from grass-fed whey and hydrolysed sources to maximize recovery.
MASSIVE CALORIE BOOST - Fuel your gains with over 1000 kcal per serving—perfect for serious muscle growth.
CREATINE INFUSED FORMULA - Enhanced with creatine and essential amino acids for explosive strength and endurance.
CLEAN CERTIFIED QUALITY - Produced in an Informed Sport registered facility, Halal certified, with zero added sugars or artificial nasties.
DELICIOUS BLUEBERRY INDULGENCE - Savor a creamy, crave-worthy flavor that turns every shake into a treat, not a chore.
Reflex Nutrition Instant Mass Heavyweight is a premium mass gainer powder delivering over 1000 kcal and 60g of protein per serving, enriched with creatine, EAAs, and 18 essential vitamins and minerals. Designed for hard gainers and athletes, it supports muscle growth, recovery, and performance with a delicious blueberry flavor, clean ingredients, and trusted quality certifications.
Specifications
Allergen Information
Contains: Oat, Soy, Egg may contain, Milk, Wheat
Weight
5.4 kg
Units
5400.0 gram
Manufacturer contact
Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK
Country of origin
United Kingdom
Brand
Reflex
Format
Powder
Age Range Description
Adult
Country of origin
United Kingdom
Serving Size
300 g, 100 g
Energy (kcal)
1121.00 kcal
Fat
7.2 g g
of which:
-
- Saturates
1.9 g g
Carbohydrate
203 g g
of which:
-
- Sugars
15 g g
Fibre
2.1 g g
Protein
60 g
Why isnt the nutritional info shown?!
how well does this mix in an ordinary shaker? i know some are clumpy and chalky tasting, thank you
Has it got any. Bcaa,s pls
Must I work out to use this?
Reviews
4.0
All from verified purchases
J**N
Muscle building Gainer
Brilliant weight gainer for muscle building. Has a great protein profile. The quality of the product is very high and well packed. Although it has huge serving portions you can always adjust to what you need to meet your requirements.It dissolves well and tastes really good compared to a lot of others I’ve tried. It has a smooth texture after just a few shakes in a bottle and goes down nicely.
M**E
Good value and effective
Excellent product, good price.Other similar products I have tried have a sickly sweet synthetic flavour, more expensive and seemingly less effective.Nice taste that isn't overpowering or very sweet. Good consistency when mixed (I don't mix it very well or shake that much and the few clumps I get aren't at all off-putting)Despite the calories and well rounded ingredients I wouldn't think of this as a replacement and am pleased to see that it isn't marketed as such. Rather, if you are training or just generally busy with stuff this feels like an additional surplus/boost to improve your growth and overall health. I am not a big fan of protein powders, meal replacements, pre-workout etc and this feels like it sits somewhere nicely inbeteeen those.I would highly recommend this product to anyone that wants a well rounded powder to supplement their diet.
A**R
Vile tasting vanilla*** but lovely strawberry ***
Bought vanilla and strawberry flavours ..the vanilla smells like chocolate and tastes vile (actually had to check sell by date). maybe someone put the wrong flavourring in tried to cover it up...it tastes nothing like vanilla ..the worst tasting vanilla shake I have ever had in my life. If I could send it back I would. The worst part is I've got 5.4kg of it plus 5.4kg of strawberry flavour which I'm scared will be just as vile....unless I have got a bad batch I would suggest spending the extra pounds and buying a bigger brand name.*****update****The strawberry flavour was/is great, I have bought a few packs since my original review because it tastes good and it actually works...put on about 13kg over 6 months (coupled with a balanced diet and weight training) and was at by heaviest weight ever at 93kg but lost a few kg after catching a bit of covid an not being able to train for a couple of months.
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
T**E
Great buy
Husband always buys this . Lovely flavour he has some horrid ones love it’s next day also
G**
Tastes bad but effective
Tastes awful, makes you very bloated, however should be good in the long run with 1000 calories and 60g of protein, just do not drink before a run
J**
Impressed. Notice results
This is a great product. Has good flavour without to much sugar. Mixes well and It disgests really well. Can have with milk and i have to say the flavour is really nice. Water is just as good to definatly worth the price.Ive been taking for few months and have noticed a difference. Ordering the 5.2kg one will get most for your money.
B**E
It works
I bought this for my son to have extra calories as he's underweight due to having Arfid, I've bought other ones before which sadly had to be binned as he didn't like the taste or consistency, He told me he'd like to try a different one again as he was fed up being so underweight, so after doing some research we decided on this one, Thankfully he likes the taste, I mix it with whole milk and also add in some Chocolate nesquick powder, He is 22 years old and is 5"9 tall, his weight 10 days ago before starting this protein powder was 8 stone 2, today just 10 days later his weight is dead on 9 stone the heaviest he's ever been, I can honestly say I got quite emotional to see his weight go up so much in such a short space of time, especially as he had a huge smile on his face once he realized he'd put on so much weight. As a mother of a son with this condition, his weight has always been a huge worry to the point of losing sleep. I've just placed another order as a subscription as this stuff has been a godsend. So Thank you so much <3 edit.. my son now weighs on 29th dec 9 stone 7, and for the first time is his life is classed on the lower end of being a healthy weight, we will continue using to keep his weight up hoping to get past the 10 stone weight soon.
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Anjali K.
The product quality is outstanding. Exactly what I needed for my work.
1 month ago
Ravi S.
I loved the variety of products available. Will definitely shop again.
For a full serving mix 300 g (approximately five heaped 60ml measures with 700 ml water in a suitable shaker cup or blender, mix until smooth. This product is intended for adults performing high-intensity exercise. When just starting with this product, you may find it beneficial to begin with half the quantity before slowly increasing to the full serving in order to make it fit into your personal calorie plan. Consume Instant Mass® Heavyweight between meals to maintain a positive nitrogen balance, or drink 20-30 minutes after a workout for optimal results. Alternatively, take Instant Mass® Heavyweight 45-60 minutes before bed to contribute to muscle maintenance overnight. Once mixed, consume the shake immediately and don't leave to stand. For a shake that is more calorie-heavy and creamier, try the product with semi-skimmed milk.
Safety Warning
This product is a food supplement and should be used in conjunction with food as part of a varied and balanced diet and healthy lifestyle, not as a substitute for such. Recommended consumption is one 300 g serving per day. Do not exceed the stated recommended daily dose. This product is not intended for use by persons under the age of 18. Keep out of reach of young children. The scoop included with this product measures by volume not by weight, for precise measurements please use measuring scales. This product is sold by weight, not by number of servings. This product has been manifactured in a facility which is routinely tested for banned substances. Protein contributes to the growth and maintenance of muscle mass. Creatine increases physical performance in successive bursts of short-term, high intensity exercise. The beneficial effect is obtained with a daily intake of 3 g of creatine.
Manufacturer Contact Information
Reflex Nutrition, Sea View Way, Brighton, BN2 6NT, UK
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Although it has huge serving portions you can always adjust to what you need to meet your requirements.It dissolves well and tastes really good compared to a lot of others I’ve tried. It has a smooth texture after just a few shakes in a bottle and goes down nicely."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"M***E"},"datePublished":"3 April 2023","name":"Good value and effective","reviewBody":"Excellent product, good price.Other similar products I have tried have a sickly sweet synthetic flavour, more expensive and seemingly less effective.Nice taste that isn't overpowering or very sweet. Good consistency when mixed (I don't mix it very well or shake that much and the few clumps I get aren't at all off-putting)Despite the calories and well rounded ingredients I wouldn't think of this as a replacement and am pleased to see that it isn't marketed as such. Rather, if you are training or just generally busy with stuff this feels like an additional surplus/boost to improve your growth and overall health. I am not a big fan of protein powders, meal replacements, pre-workout etc and this feels like it sits somewhere nicely inbeteeen those.I would highly recommend this product to anyone that wants a well rounded powder to supplement their diet."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"A***R"},"datePublished":"21 November 2020","name":"Vile tasting vanilla*** but lovely strawberry ***","reviewBody":"Bought vanilla and strawberry flavours ..the vanilla smells like chocolate and tastes vile (actually had to check sell by date). maybe someone put the wrong flavourring in tried to cover it up...it tastes nothing like vanilla ..the worst tasting vanilla shake I have ever had in my life. If I could send it back I would. The worst part is I've got 5.4kg of it plus 5.4kg of strawberry flavour which I'm scared will be just as vile....unless I have got a bad batch I would suggest spending the extra pounds and buying a bigger brand name.*****update****The strawberry flavour was/is great, I have bought a few packs since my original review because it tastes good and it actually works...put on about 13kg over 6 months (coupled with a balanced diet and weight training) and was at by heaviest weight ever at 93kg but lost a few kg after catching a bit of covid an not being able to train for a couple of months."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"1.0"},"author":{"@type":"Person","name":"S***Y"},"datePublished":"26 April 2025","name":"Ffs.","reviewBody":"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"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"T***E"},"datePublished":"26 April 2025","name":"Great buy","reviewBody":"Husband always buys this . Lovely flavour he has some horrid ones love it’s next day also"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"3.0"},"author":{"@type":"Person","name":"G*** "},"datePublished":"18 April 2025","name":"Tastes bad but effective","reviewBody":"Tastes awful, makes you very bloated, however should be good in the long run with 1000 calories and 60g of protein, just do not drink before a run"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"J*** "},"datePublished":"23 June 2024","name":"Impressed. Notice results","reviewBody":"This is a great product. Has good flavour without to much sugar. Mixes well and It disgests really well. Can have with milk and i have to say the flavour is really nice. Water is just as good to definatly worth the price.Ive been taking for few months and have noticed a difference. Ordering the 5.2kg one will get most for your money."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"B***E"},"datePublished":"10 December 2024","name":"It works","reviewBody":"I bought this for my son to have extra calories as he's underweight due to having Arfid, I've bought other ones before which sadly had to be binned as he didn't like the taste or consistency, He told me he'd like to try a different one again as he was fed up being so underweight, so after doing some research we decided on this one, Thankfully he likes the taste, I mix it with whole milk and also add in some Chocolate nesquick powder, He is 22 years old and is 5\"9 tall, his weight 10 days ago before starting this protein powder was 8 stone 2, today just 10 days later his weight is dead on 9 stone the heaviest he's ever been, I can honestly say I got quite emotional to see his weight go up so much in such a short space of time, especially as he had a huge smile on his face once he realized he'd put on so much weight. As a mother of a son with this condition, his weight has always been a huge worry to the point of losing sleep. I've just placed another order as a subscription as this stuff has been a godsend. So Thank you so much <3 edit.. my son now weighs on 29th dec 9 stone 7, and for the first time is his life is classed on the lower end of being a healthy weight, we will continue using to keep his weight up hoping to get past the 10 stone weight soon."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.125,"bestRating":5,"ratingCount":8}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Why isnt the nutritional info shown?!","acceptedAnswer":{"@type":"Answer","text":"The company sent me only half my order on multiple occasions and the wrong flavour. The fact that the nutritional info isnton there is no surprise"}},{"@type":"Question","name":"how well does this mix in an ordinary shaker? i know some are clumpy and chalky tasting, thank you","acceptedAnswer":{"@type":"Answer","text":"Hi I would recommend blend for 7 seconds if that.\nIf you have a good shaker and give it a good shake it will be just as smooth great mix chocolate for me taste wonderful"}},{"@type":"Question","name":"Has it got any. Bcaa,s pls","acceptedAnswer":{"@type":"Answer","text":"Finished it a long time ago so don’t have the package. But i checked the photos and googled the BCAA’s and based on this, the product doesn’t have any of the 9 essential amino acids aka BCAA. So it’s a No and you’ll have to buy it separately."}},{"@type":"Question","name":"Must I work out to use this?","acceptedAnswer":{"@type":"Answer","text":"I won't buy this again as found the taste not to my liking at all as for working out I would as I belive this will help you gain weight but mostly on the stomach if you don't work out"}}]}]}
