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USN Muscle Fuel Mass


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USN Muscle Fuel Mass

USN Muscle Fuel Mass weight gainer is available at lowest price in the UK at We offer free delivery on all of the top bodybuilding and sports nutrition supplements to UK Mainland and the cheapest rates right across Europe! Check out our special offers page for huge discounts on the biggest brands!

USN's Muscle Fuel Mass is a meal replacement formula that is designed for active people who demand the benefits of top quality proteins, increased amounts of complex carbohydrates and nutrients for optimum health and muscle performance. This product is specially designed for individuals that find it hard to gain mass (hard gainers), as well as endurance athletes that need a high carbohydrate meal to complement a strenuous endurance-training program. Since carbohydrates are "protein sparing", this will help these athletes not to lose unnecessary muscle with this kind of training programme. Studies suggest that using a variety of protein substrates may work best for improving protein synthesis and overall health.

Unlike other meal replacement formulas, USN's Muscle Fuel Mass is virtually sugar free and also offers a variety of anti-catabolic amino acids. This unique formula combines high biological value protein with very low glycemic index carbohydrates to build and repair muscle tissue while balancing nitrogen levels during workouts.

Just enough carbohydrates are used to fuel a strenuous endurance workout and replenish depleted glycogen. It is designed to pack muscle on even the hardest of the hard gainers with elevated protein-to-carb ratio and a level of quality protein that guarantees an anabolic environment of muscle growth and performance. USN's Muscle Fuel Mass is a complete meal that is very low in fat, great tasting and easily digested.


Container Size: 2000g
Serving Size: 3 scoops (155g)
Servings Per Container: 12
Container Size: 5000g
Serving Size: 3 scoops (155g)
Servings Per Container: 32
Amount Per Serving:
Total Calories: 615
Protein: 48g
Total Carbohydrates: 89g
-Sugars: 32g
-Dietary Fiber: 1.9g
Fat: 5.1g
-Saturates: 2.66g
Sodium: 1.5g
Vitamin A (retinol): 187µg
Vitamin D (cholecalciferol): 1.2µg
Vitamin E (d-alpha-tocopherl): 2.8mg
Vitamin C (ascorbic acid: 23mg
Vitamin B1 (thiamin mononitrate): 0.6mg
Vitamin B2 (riboflavin): 0.4mg
Niacin (nicotinamide): 4.9mg
Vitamin B6 (pyridoxine-5-phosphate): 0.4mg
Folic Acid (pteroylmonoglumatic acid): 48.5µg
Vitamin B12 (cyanocobalamin): 0.9µg
Biotin (d-biotin): 11.8µg
Pantothenic Acid (d-pantothenate, calcium): 1.4mg
Calcium (from natural milk source): 279mg
Phosphorus: 239mg
Magnesium (magnesium oxide): 67.1mg
Maltodextrin, Whey Protein Isolate and Concentrate, Premium Cocoa Powder (only chocolate flavour), Soy Protein Isolate, Skim Milk Powder, Thickener, Calcium Caseinate, Fructose, MCT Oil, Micellar Caserin, Flavourants, Stabiliser, Salt, Calcium Phosphate, Magnesium Oxide, Sucralose Blend, Vitamin Blend (A, C, E, D3, B1, B2, niacin, pantothenic acid, B6, Biotin, Folic Acid, B12), L-Glutamine, Lactazyme Blend, Leucine, Taurine,Isoleucine, Valine
Please Note: Nutritional facts and ingredients may vary slightly between flavours.
As a dietary supplement, add three rounded scoops to 450 - 500ml of cold water (depending on taste) blend or shake in a hand held shaker and mix for 30 seconds. Have 2-3 servings daily, servings may be halved. Use between meals, or within 30 minutes after training as a recovery drink.
Reviews (37)

"This is probably the best tasting high calorie shake I've found, and mixes well (if you add the water slowly!). I'd recommend 100g gram servings split up over the day. No noticeable gains in weight yet, but have only been using it 2-3 weeks."

Posted by Andy Nash  (14th April 2016)


"I've tried this product after a month of taking Sci-MX. I could not compare these two. Sci-MX does the job best, in my opinion. Using this one, I've noticed no significant, positive change at all (if not the opposite). Next time, I will go for Sci-MX Gainer again, definitely. "

Posted by Stelian Nechita  (5th May 2015)


"Super fast delivery, does exactly as it says on the tub, well pleased"

Posted by Andrew mikalauskas  (23rd June 2014)


"This Supplement is spot on. Does exactly what it claims to.
I have had the strawberry 3 times, mixes really well and tastes great, gives all the benefits of all its competitors and then some. I highly recommend"

Posted by Michael Courtney  (10th October 2013)


"Most importantly, it is a good supplement, I've gained just under a stone in weight since I started taking it (which is noticeably better than any other supplement I've taken!) but I made the mistake of buying chocolate! I see having one of these shakes as a chore! The only reason I can force myself to drink it is because its easy calories!


Posted by Jack  (25th March 2013)

Write a Review
Q Hello I was just if this would be a good one to use when first starting out. I am only 16 and would like to gain weight and muscle is this the one for me?

Muscle Fuel Mass, Mutant Mass, Real Mass or Weight Gainer Hardcore would all be good choices to supply you with the calories, protein and other nutrients that you need to gain mass and to build and repair muscle.

Q hello is it safe to take muscle fule mass/and muscle fule anabolic together .1 as a mass and the other as an anabolic

It is fine to take both as they are both aimed towards the same goal.

Q Hi there, I am having lots of trouble finding products that are gluten free, I know that the USN whey protein is gluten free but I think that I need something that help me put on weight as I am a hard gainer. Are there any other gluten free products that you would recommend? cheers Simon

I think you're going to struggle, as even the products that don'e contain gluten as an ingredient are made in factories that handle gluten-containing foods. You're probably best off just sticking with the whey and using specific gluten-free carbohydrate products to boost your calorie intake (you may want to also add a multi-vitamin / mineral and creatine)

Q i have used this for nearlly 2 months at the end march i have gained near enough a stone im now 11 stone 2/3 pounds. but i dont look thesize i want to beasi want to aim t auditiion for mens health magazine any propersitions on what else i should use but need to be careful as i have one kidney so i cant take creatine.

I have now responded to your query via the email address provided.

Q I received this product today and the nutritional information is slightly different to what is stated on your website. Per 155g serving - protein is 43g, not 46g and carbohydrates 97g, not 100g. I just wanted to confirm that this product is still very low in sugary carbohydrates (as stated on the nutritional information on your website - 5g), as this amount is not stated on the tub. Thanks.

Thanks for the heads up, I will have this changed on the site. Regarding the sugar, yes, I just looked at the tub and it's 4 grams. Most of the carbs are from maltodextrin (a complex carb).

Q Looking for a weight gainer. However i want one with low or no amounts of soy. mutant mass, mhp and usn muscle fuel all contain soy. are they high in soy or not?

Mutant Mass contains little to no soy protein, MF Mass contains soy as well under half of its protein source and MHP is mostly soy. So go with the Mutant Mass as it's got very little soy.

Q ok so ive had some negative effects from phd mass gainer just wondering if usn will be better for me

If you have had a bad reaction for one brand defiantly move onto another, you might not agree with the ingredient/ingredients in there. so defiantly try and change brands.


Muscle Fuel Mass, there is nothing in this product that isn’t found in typical foods or multi-vitamins/minerals (except the enzymes and they wouldn’t have any effect on birth control medication). So there is no problem using it.

Q Am 63kgs and workout,3 times a long will it take to gain 10 kgs?

However long it takes your body to adapt to consuming 500-1000 extra calories daily more than your maintenance level. You should be looking to gain around 1-3lbs a week.

Q Can i mix a batch of muscle fuel mass the nigh before and take it to gym with me the following morning?

Yes you can but it is best to mix it in as you need it as some say the product denatures the longer you leave it standing in water.

Q can i take muscle mass fuel before workouts as a mean of energy?

Yes you can but we would recommend taking no more than a half serving around 90 minutes before training so it has some time to digest before you start training

Q Can you use milk with this product?

Yes, you can use any protein with milk but keep in mind that along with the extra protein, it also adds calories, carbs and fats. It won't affect how the protein works though...

Q Does this protein shake make you both bulk and lean? And should I take this even on days I don't train? I take 2-3 scoops, once a day. I'm 17 at 65kg. What sort of foods would I be recommended to eat to see results?

It will help with the addition of extra calories around workout times /or otherwise. With the added ingredients it will benefit muscle growth and recovery. We'd recommend whole foods with lean protein sources such as Beef and sweet potato for an average meal.

Q Hello mate, whats the difference between this product and muscle fuel anabolic

Anabolic is an all in one product and contains more muscle building and recovery ingredients than Mass dose but Mass contains more calories and carbs.

Q hello, i am 21 yrs and i just got the product today.can u help me on how to take it cos i need to gain serious muscles and also do i have to take it till its exhausted??...thank you

Take 2 full servings daily in between meals.

Q hey, I am 16 years old, just got the product. I weigh 56kgs. I don't know how to use the product. i want to gain muscles as big as possible and as soon as possible. Any ideas on how i can use it and which products i can use as well ( to get gain muscles as quick as possible and as soon as possible )? Thanks

At the age of 16 your body is still growing and developing and you are still naturally increasing in heigh and bodyweight, the same theory still applies to all ages that if you are consuming more calories in a day than you are burning seven days a week, then you will gain weight. If you are weight training in a body-building manner then the extra calories will be used to help promote lean muscle growth. Building muscle tissue is not an overnight process, as hard-work, dedication and time is the key to building lean, dense muscle mass. This product will help you in your goal to build muscle mass. Just start by using one full serving a day and monitor your weight gain on a weekly basis as an average weight-gain of 1-2lbs a week is a healthy weight increase.

Q Hi i was wondering i am all ready 2 stone over weight. I have just started training again to build my self back up is it wise to take muscle fuel mass anabolic to help me bulk back up with muscle

USN Muscle Fuel Mass will help with recovery however if taken during the day can help with muscle mass gain. If your diet is strict and training regime vigorous then this will illicit good gains in muscle mass with limited bodyfat gain.

Q hi does this product contain creatine?

Muscle Fuel Mass dose not contain creatine. Muscle fuel anabolic & Hyperbolic Mass from USN contain Creatine.

Q Hi I am 19 going on to 20 and I am trying to build muscle while going to the gym and currently I am on a supplement called syntha 6 I don't find synths 6 very well because it is a dieting protein even though I know I get protein out of the drink it doesn't feel like it is working to the best considering that it is my first time changing my supplement is this a good drink to gain muscle

This will depend on your body composition, as well as the eating plan and exercise regime you have in place. If you are an individual with a fast metabolism who struggles to gain weight with (adequate) meals alone, then you may benefit from taking a weight gainer, such as BSN True Mass 2.6kg, £43.99 or Mutant Mass 2.2kg, £23.99.

Q hi i know a lot of guys that used usn MASS and after a while got really fat and i,m afraid of that happening to me because i can't train seven days a week because i'm a student with a really tight time schedule do you have any advice for this fear of mine using USN MASS because i want to bulk up to

If they have gotten FAT then they are clearly not following the right diet for there goals they are trying to achieve and also not training right. You do not need to train 7 days a week. 3 1hour sessions is plenty especially for a student. rest is just as important as training. Providing you are eating right and training hard you will not get FAT using this product but obviously do expect an increase in weight if building mass is you main goal.

Q Hi I'm interest in workout but don't know which supplement to use I'm 17 @ 60 kg and want to gain muscle

Hello, As you are aware, I have now responded to this query via the email address provided.

Q Hi im 29 years old and weigh 62 kgs. i workout everyday (strength training and cardio) im using USN phedera cut xt in the mornings and USN Muscle fuel after gym. my goal is to lose a few kgs of fat and replace it with muscle.. is the muscle fuel shake going to help me gain weight or lose?

Muscle Fuel Anabolic is designed to help build muscle and strength. If you are a young guy with a fast metabolism who is trying to build muscle, you may struggle to build muscle and lose fat at the same time, as this usually requires that you eat more food than you burn off. So dieting and restricting calories may make it difficult to build muscle.

Q hi mate , can i take muscle fuel mass in early morning with empty stomach ?

Yes muscle fuel mass can be taken any time of the day, morning, afternoon or night and in place of a meal if needed.

Q hi mate am a young boy 0f 25years old and my pound is 70kg.i would like to know if the indication to use are good for me to take 3 rounded of scoops 2-3 servings daily as mentioned in the direction???thank in advance to answer my question:-)

Yes, start with 2 servings per day and increase to 3 or eat more food if you are not gaining weight consistently on this dosage.

Q hi there. does this product make you put on weight? and can it be taken along with diet whey?

The word "MASS" is a dead give-away for helping increase weight. MASS products containe a medium to high amount of carbs and fats. Not recommend to take alongside diet whey.

Q Hi what supplements are suitable for a 14 year old from usn

Unfortunately we do not advise products to anyone under the age of 16.

Q Hi, I am a 16 year old, at the moment currently weighing approximately 65kg and would like to gain muscle and burn fat. I am going to start regular exercises and maintain a healthy diet. Therefore I am contacting you to get advice on which one of your products would be the best to tie in with these routines. I have looked around and found a few products, but have have noticed that some can affect growth. Therefore, as I am still 16, can you recommend me a safe product which has promising results without affecting my future growth. I have seen a few products like: USN Muscle Fuel Mass USN Muscle Fuel STS Can I get your advice on these two products above to see whether they are safe to use at my age, and tell me if they have effective results in what I want. If these products are not as effective in your recommendation let me know and explain why these are not a good choice, going on to tell me the best product to use. Many Thanks, Alex

Hello, I have recently responded to this query via the email address provided.

Q hi, does usn muscle fuel mass contain nuts or traces of nuts? thanks

Hi, It is likely to have been manufactured in an environment which also produces items containing nuts, therefore, is not guaranteed to be totally nut-free.

Q Hi, I usually do my work out in the morning and as well in the evening. Can you please recommend me when to use this product. I am 20 yrs, 166 pounds, 6'1". Thanks, Lou.

We would recommend you take one serving post workout as this is when your body really needs to replenish all the nutrients it has lost during training. Otherwise take 2-3 servings a day in between meals and adjust number of servings depending upon if you are gaining adequately or not. Please refer to product label for full directions of use.

Q Hi, I'm 11 Stones and train at the gym 5 times a week. I have a fast metabolism as in, I could eat a lot and still be the same weight. I'm 5ft11 and am 18yrs old. After a lot of research I've decided to buy muscle fuel mass by USN as bulking up is my main goal. I wanted to know if this is a good and safe product for an 18yr old (nearly 19) who's fairly active to use? Also is this product quick and effective? (I haven't bought the product yet, waiting for expert advice). Many Thanks.

Hello, Yes, the product is perfectly safe for (an otherwise healthy) male, aged eighteen years, if taken according to specified guidelines. With regards to its efficacy, it is important to think of supplements as a support mechanism to sound eating habits and a training regime. Consistency and discipline are key; it is a combination of all of these factors that will determine your results, and the time frame in which these are achieved. Remember, it is precision - not speed - that makes for sustainable and satisfactory goal attainment.

Q Hi, I'm 18 years old and I only weigh 7 stone I trained 5 days a week for 5 months at the start of this year, using maximuscle weight gainer. I did see a little of a change like my arms and chest got a little bigger but nothing massive changed! I was just wondering as I go back to gym again and eating cleaner I needed to know what's better to gain muscle and weight, would it be usn muscle fuel mass or usn muscle fuel anabolic, if you could email me that would be brilliant! Thanks mate!

Hi Matt, As you will know, I have since responded to this query via the email address provided.

Q Hi, I'm 18 years old and I only weigh 7 stone I trained 5 days a week for 5 months at the start of this year, using maximuscle weight gainer. I did see a little of a change like my arms and chest got a little bigger but nothing massive changed! I was just wondering as I go back to gym again and eating cleaner I needed to know what's better to gain muscle and weight, would it be usn muscle fuel mass or usn muscle fuel anabolic

Hi Matt, As you will know, I have since responded to this query via the email address provided.

Q hi, im 16 years old and have just started taking this, at what time of the day should i take this? before, after or during training and sport? tnx

If this is the only supplement you are taking, then take 1 serving right after training and aother serving between meals - whenever you go the longest without food. HAVe it between meals on non-training days

Q Hi, im 29yrs old. In sept i had 50kgs since i have used this i have gain 4kgs till date. Is it a good progress. and yea i only take it once a day at night before sleeping.

If your goal is to gain mass we recommend 2-3 servings per day. Morning, afternoon & night.

Q much protein in 1. 50ml scoop of muscle fuel mass. please, thanks

Hi, A 155g serving (three scoops) contains 49.6g of protein.

Q How do I use this stuff? I am 140lbs and I want to Put on muscle and mass I bought a 2.5kg of this and it says I must take 180g time 3 a day and this mean in about 5days my tub is finished is this right?

It will be correct, however this is to bump up your calories for the day and should not be used as your main source of calories, this will aid put on solid muscle mass with a good diet and exercise regime.

Q i am 17 at 90 kg i want to know if i am suitable to take it , also i hardly work out should i use the product or not?

Hi, As you are aware, I have now replied to your query via the email address provided.

Q I am 18 and weigh 56kg and im about to purchase either this supplement or the MF Anabolic, i was wonder which would be best and when to take it?

Hello, I have since responded to this question via the email address provided.

Q I am diagnosed Coeliac, i need to follow a strict Gluten-Free diet, can you state whether or not this product has gluten in it? I brought serious mass gainer but contains gluten through the glutamine peptides. Thanks.

Providing you are ok with Maltodextrin then we would recommend Prolab N-Large2 as this is a very basic formula with not many other added ingredients. As far as we are aware USN Muscle fuel mass dose contain Gluten but we recommend you contact USN direct for more information.

Q I just want to confirm if this product doesnt contain egg, even in traces?

Muscle fuel mass dose contain egg protein.

Q I was advised to take this supplement in the morning with breakfast and not again during the day. I was also advised to take Optimum Whey after working out. I am not sure which advise to follow. I am 70 kilos in weight. Really I am looking to gain muscle, what advise can you give me?

Take one serving with breakfast and one immediately following your workout. On non training days still take 2 servings a day.

Q I weigh 107kg and want to build muccle can i use this product i use also shotgun

Yes this is perfect to use.

Q I would like to put on a few kgs but I do not work out or go to the gym ...i would like to know if i will still gain weight by using fuel muscle mass twice a day ?

Yes you will gain weight using this product especially if you’re not working out. Take two servings a day in between meals.

Q if i am 53kg how many scoops of muscle fuel mass must i take per serving

To make solid muscle gains you shold start out with 2 to 3 scoops (2/3 to 1 serving), twice daily. If this doesn't deliver the gains you desire, increase the number or size of daily servings and/or increase you food intake.

Q if i per mix the shake do i have to drink them within a time span or can i mix two at the sane time for that day many thanks paul

It has been said that the protein starts to denature the longer you leave it. We would recommend you mix your proteins at the time of consuming them.

Q im a Basketball player and the key is the have a strong lower body and upper. i train hard but dont see a lot of size increase or height increase, would this help with both?

Whilst both height and muscle size are attributed to genetics, you can alter the latter. Height may not change due to that being hereditary. Muscle fuel mass however can help you develop more muscle mass and help you develop strength along with a good exercise and nutrition plan.

Q im a carb watcher do i have to perforn heavy cardio to burn away the exess cabs

Diet is the most important aspect of weight loss for sure but any form of cardio or exercise will yield better results than a low-carb diet alone. Best recent evidence is for high-intensity training, which burns the most fat in the shortest amount of time.

Q im a rugby player who struggles to gain and maintain mass. im 6ft1 and 86kgs and no matter how hard i train i dont see results, is this a recommended [product or is there something that might match me better?

You definitely need a weight gainer because quality protein and calories (along with its vitamins and minerals) will help you hit your calorie needs. Both for muscle gains and for increased anaerobic performance and power, you should definitely be on a creatine product. Either buy pure creatine and mix it in your shakes or buy a creatine product like Cell-Tech or Mutant Cre-X12 that are designed to increase creatine retention in the muscle and cause fast gains in mass and strength.

Q Im wondering how big the scoops are in usn muscle fuel mass ?

Around 50g per scoop.

Q Is it safe for me to take this product as I'm 15 years old, I play rugby and cricket and 3-4 times a week I do weight training.

Ordinarily, I would not advise that any persons aged under eighteen years take dietary supplements, though since you lead a very active lifestyle, I shall advise accordingly, taking this into account. As an adolescent, your body is still growing and developing; I would therefore advocate making changes to your eating habits (if applicable), by ensuring that you are including healthy proteins, complex carbohydrates and fats in your diet. In order to meet the demands of your current activity levels, I would recommend USN Muscle Fuel STS 2kg, £35.99 which can be a useful dietary supplement for active teenagers. At the age you are, it is more sensible to aim to 'grow into your body', i.e. don't push your body to gain mass; rather, focus on cultivating a lean, toned and healthy physique. I hope this information addresses your query.

Q is this product legal for rugby union

Yes. There is nothing to suggest that this would not be aloud in the rugby union. As with any supplement or even food, there is always a tiny chance of contamination with banned substances. Although Maximuscle and EAS offer drug-tested products.

Q Just bought usn fuel mass never used it before so just looking for advice when to take it etc and will it make me fat i go to gym twice a week cant go more cause of work thanks for the info

Hi Edward, the best time to take it is in-between meals, and just after training. Your body will just deposit the extra calories as quickly as possible so yeah it will make you put on a belly and even more so if your only going to the gym twice a week, so stick with half servings 1 1/2 scoops per shake hope this helps

Q ola eu gostaria de saber quanto tempo leva para se poder os resultados

Englais pour favour

Q Should I use Muscle Fuel Mass to put on bulk, then switch to USN Whey Protein to transform the bulk to lean muscle??

Yes exactly that.

Q What is the difference between USN muscle fuel anabolic and USN muscle fuel mass?

Muscle fuel mass has a higher carb content and doesn't contain a test booster.

Q Yo, I'm 15 years old, just got the product. I'm taking 4 scoops. twice a day. 2 hours after lunch and another serving after I train. I weigh 63kgs. Any idea on how long I need to wait to actually see results ? Thanks

This depends entirely upon your calorie intake. If you aren't gaining, you aren't eating enough's that simple. Some people have to add quite a few extra calories to gain and often people eat less food when they add a gainer to their diet. So schedule in more or bigger meals. Also, if you aren't using a creatine product, that would be a "no brainer" It's the most effective, safest, muscle and strength-builder.

Q What flavor would you recommend that tastes best with water and milk?

Q hi im 27 and im currently doing 3 days weight training in the gym i weigh 82 kgs. i was wondering the best time to take this product i.e. before gym in morning after gym. i just want to get to around 90 kgs but muscle not fat could you advise on a diet i could try thanks.

Add a half serving of Muscle Fuel Mass twice daily - mid morning and mid afternoon or before bed. Keep eating as many calories from food and try to ensure that your meals are high in protein & carbs and eat a variety of fruits and vegetables.

Q hi there i am 50 years old and in remission from mouth cancer and cannot eat properly, what is the best product for me to take to help me gain weight and help me in the gym to build muscle

  Hello,   In order to increase your calorie intake, I would advise that you use meal replacement product that also serves as a weight gainer. Reason being, some weight gainers are designed to add caloric value (between meals and pre/post-training), but do not necessarily contain the micronutrients/macronutrient profile that would make them suitable to be a meal replacement.    USN Muscle Fuel Mass is fine to use as a meal replacement; however, I would recommend that you seek the approval of your GP/healthcare practitioner before use.  

Q Are mass gaining powder products suitable for kids as young as 11?

Most products are designed for those over 16, so we wouldn't recommend for someone that young. Having said that, many of them don't contain anything you couldn't get from foods.

Q Am I ok to use this along with Usn Pure Protein??

Hi Jay Yes you can use these at the same time - follow the Directions of use on the Muscle Fuel Mass and you can use the protein at other times when you need protein.

Q Hi, this product has been discontinued by usn so what is the expiry date on the batch you have?

I'm not sure that this product has been discontinued but perhaps you know something I don't. Either way, the dates of the products in our warehouse currently are all good until 2017.

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