Reflex Nutrition The Muscle Bomb - 400g / Sherbet Lemon - Pre-Workout Powder

Reflex Nutrition The Muscle Bomb

400g / Sherbet Lemon
£27.99
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Reflex Nutrition The Muscle Bomb - 400g / Sherbet Lemon - Pre-Workout Powder

Reflex Nutrition The Muscle Bomb

£27.99
Free Delivery When You Spend £100
Size400g
00
Hours
00
Mins
00
Secs
FOR SAME DAY DISPATCH
  • Explosive energy and razor-sharp focus from 350mg caffeine to power your toughest sessions.
  • Huge, feel-good pumps with 9g Citrulline Malate to support blood flow and nutrient delivery.
  • Train harder for longer with 2.5g Beta-Alanine to push through the final reps.
  • Stay on top of performance with an electrolyte blend and B vitamins for hydration and energy support.
  • Zero added sugars and a clean, great-tasting formula designed for serious training.

Reflex Nutrition The Muscle Bomb – High-Stim Pre-Workout That Hits Different

When the goal is to walk into the gym ready to set new PBs, you need more than hype—you need a formula that actually delivers. The Muscle Bomb by Reflex Nutrition is a premium, high-stim pre-workout built to energise your training, drive laser focus, and unleash powerful pumps without the crash. Whether it’s heavy compound lifts, a brutal metcon, or high-intensity intervals, this pre-workout helps you turn up, lock in, and go all out.

Energy you can feel—focus you can use

350mg of caffeine brings serious motivation and mental clarity so you can get in the zone fast and stay there. Expect locked-in concentration from the first warm-up set to the last working rep.

Maximise pumps and performance

9g of Citrulline Malate supports nitric oxide production for standout pumps and satisfying muscle fullness. Better blood flow means better delivery of oxygen and nutrients when you need it most.

Push past plateaus

2.5g of Beta-Alanine is included to help you maintain intensity when the burn kicks in, so you can dig deeper, rack up quality volume, and make every set count.

Hydration and feel-good finish

An effective blend of key electrolytes plus a Vitamin B complex helps support hydration and energy metabolism—ideal for long sessions and back-to-back training days. And with no added sugars, you get clean, consistent performance without unnecessary fillers.

Why choose The Muscle Bomb?

  • Serious dosages aligned with what lifters and athletes actually feel in the gym.
  • Complete performance support—energy, focus, pumps, and endurance in one scoop.
  • Stack-friendly formula that pairs well with your daily essentials.
  • Reflex Nutrition quality from a trusted sports nutrition brand.

Who is it for?

Perfect for lifters, functional athletes, team-sport players, and anyone who wants a high-caffeine pre-workout that supports strength, volume, and intensity. Use it on big lift days, conditioning blocks, or whenever you want to bring your best to the session.

Ingredients

Ingredients: Vitamin B6, Folic Acid, Vitamin B12, Zinc, Magnesium, Sodium, Potassium, Citrulline Malate, Beta-alanine, Caffeine, L-Tyrosine, L-Taurine

Protein 14g g
0%
RDI
Fat 0.5g g
0%
RDI
Salt 0 g
0%
RDI
Carbs 3.4g 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.

Serving Size

10g

Expiry

400g / Sherbet Lemon 31-07-2027
400g / Sour Apple 31-07-2027
400g / Twizzle Lolly 31-07-2027

Barcodes

400g / Blue Raspberry 5033579002576
400g / Sherbet Lemon 5033579002545
400g / Sour Apple 5033579002552
400g / Twizzle Lolly 5033579002538

Directions

Mix 10g in 200 ml or 20 g (2 level scoops) in 400 ml of cold water. Do not take more than 20 g as a serving per day. Important: Please assess your tolerance before using The Muscle Bomb as part of your diet and training regime. To do this, please start by consuming a standard (10 g) serve.

Warnings

To avoid desensitisation, discontinue use of this product after 12 weeks of use and take a 4 week break before resuming use. This product is a food supplement and should be used in conjunction with food as part of a healthy and varied diet, not as a substitute for such. Recommended consumption is up to 30 g of product in a day. Do not exceed the stated recommended daily dose. 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 manufactured in a facility which is routinely tested for banned substances.

Ingredients

  • Citrulline Malate
  • Beta-Alanine
  • Betaine Anhydrous
  • L-Tyrosine
  • Flavouring
  • L-Taurine
  • Potassium Chloride
  • Magnesium Citrate
  • Caffeine Anhydrous
  • Maltodextrin
  • Sweeteners (Acesulfame
  • Sucralose
  • Steviol Glycosides from Stevia)
  • Sodium Chloride
  • Anti-Caking Agents (Calcium Silicate
  • Silicon Dioxide)
  • Colour (Carotenes)
  • Zinc Bisglycinate
  • Vitamin B6 (Pyridoxine Hydrochloride)
  • Vitamin B12 (Methylcobalamin)
  • Folic Acid (Pteroylmonoglutamic Acid). Please Note: Nutritional facts and ingredients may vary slightly between flavours.
  • 5 stars: 12 (38%)
  • 4 stars: 8 (25%)
  • 3 stars: 4 (13%)
  • 2 stars: 0 (0%)
  • 1 star: 8 (25%)
S
Shaher Ali
Great pump, a lot of tingles

Great pump product without the caffeine so helps fuel the nighttime work outs perfectly. It does make me extremely tingly but it has been dosed well. Flavour is tolerable but would prefer alternative flavours without caffeine in the future.

R
Robert Kerr
Reflex have ruined a good pre workout.

The previous version of this was great.

Then Reflex decided to discontinue it and make this version which is terrible. No pump, no tingle, and always turns up clumped together and solid! It does NOTHING for me. I always used Reflex for all my supplements but they just lost a long time customer. Never buying this again, it's garbage and a waste of money!!

D
Despina Fleur
Lemon squash

FINALLY i have found a pre workout that tastes nice!!

It tastes like good ol lemon squash not as zingie more sweet but i like it and its certainly better than many i have tried.

You know exactly what to expect with the flavour. No creative names or monkeys or dragons just lemon. Thank you.

B
Brews And Donuts
I wouldn't often say this

This actually is the bomb! I train full body 5 days on 2 days rest. I normally take citrulline malate on its own. For me, this is normally enough as I enjoy the pump I decided to jump into this pre-workout and just went for that full dose straight away. That's two scoops in 400 mils of water. If like me you like things with a sour taste you will love this it's quite a lot to drink before a workout so I gave it the 30 minutes after drinking it. I was starting to get the tingling, before even going into the gym. Whilst in the gym, I smashed out a new PR for back squat and just felt more focused throughout the workout. I got the usual pump which I would normally get with the citrulline malate, but I also had a lot of focus. I think mainly due to the caffeine content, I found this easy and quite pleasant to drink and had one of the best sessions in the gym I've had in quite a few weeks it's an easy recommendation you need to try the bomb

R
Robert Kerr
Reflex have ruined a good pre workout.

The previous version of this was great.

Then Reflex decided to discontinue it and make this version which is terrible. No pump, no tingle, and always turns up clumped together and solid! It does NOTHING for me. I always used Reflex for all my supplements but they just lost a long time customer. Never buying this again, it's garbage and a waste of money!!

G
Gc
Definite energy boost, strongly flavoured

This is a powdered drink mix with an appreciable amount of caffeine, which seems to give a boost quicker than the equivalent amount of coffee or similar. The flavouring (I ordered the twizzle lolly flavour) is certainly potent, although to be honest it isn't entirely pleasant: starting off nice enough if quite overpowering at the recommended concentration, it comes across as quite artificial-seeming, with a slightly bitter aftertaste that further dilution doesn't seem to do much about. There usually seems to be a little residue left undissolved at the bottom of the glass as well even after some thorough mixing, but perhaps I just need to mix harder. To be honest, any issues with the taste aside it certainly delivers in the boost department and seems to make exercise rather easier, so can't complain about the effect. That said, it is rather pricey, so only worth ordering if you know you're going to use it; the powder inside the tub starts to clump together after a while (at least in the atmosphere around here), so it might be worth transferring to a properly airtight container for long-term storage.

G
Gc
Definite energy boost, strongly flavoured

This is a powdered drink mix with an appreciable amount of caffeine, which seems to give a boost quicker than the equivalent amount of coffee or similar. The flavouring (I ordered the twizzle lolly flavour) is certainly potent, although to be honest it isn't entirely pleasant: starting off nice enough if quite overpowering at the recommended concentration, it comes across as quite artificial-seeming, with a slightly bitter aftertaste that further dilution doesn't seem to do much about. There usually seems to be a little residue left undissolved at the bottom of the glass as well even after some thorough mixing, but perhaps I just need to mix harder. To be honest, any issues with the taste aside it certainly delivers in the boost department and seems to make exercise rather easier, so can't complain about the effect. That said, it is rather pricey, so only worth ordering if you know you're going to use it; the powder inside the tub starts to clump together after a while (at least in the atmosphere around here), so it might be worth transferring to a properly airtight container for long-term storage.

S
Shaher Ali
Great pump, a lot of tingles

Great pump product without the caffeine so helps fuel the nighttime work outs perfectly. It does make me extremely tingly but it has been dosed well. Flavour is tolerable but would prefer alternative flavours without caffeine in the future.

B
Bigdaddyp
Good pre workout, but the powder was set solid in the tub.

I spent a hile looking for a cheap pre workout without creatine, and decided to give this a shot.

I don't know if it's a poor product or My GYm Supplements's storage, but my tub was solid... After a few minutes with a fork, and squeezing the sides of the tub, I was able to get myself a scoop.

It dissolves well, tastes alright, and seems to work. I have one scoop before the workout, the another during, and I've had no issues with side effects yet. Whether there's more energy than other pre workouts, I can't say, but I definitely prefer zero creatine.

I'll try it again, assuming I got a bad tub. Assuming it's alright, it's good value for money.

A
Andyg
Unique flavour that tasted amazing! decent boosts for training

This is definitely one of my favourite pre workouts i've tried in quite a while.

Not only did the twizzle lolly flavour taste absolutely amazing but i've had a really good boost for my training sessions every time i've used it so far.

Depending how you use this pre workout you can either single scoop for 175mg of caffeine or double scoop for the full 350mg, however double scooping with drop the number of servings in the tub down to just 20 servings verses 40 if you single scoop.

Where i normally train at night after i finish work i've only really been using a single scoop serving because i don't want too much caffeine late at night but even with the 175mg servings i have still been having really nice boosts off of it to fuel me through my training sessions.

I found it mixes into the water perfectly every single time & is ready to drink within a couple of seconds.

But the best bit by far for me is the flavour, if you have a sweet tooth & like sweets but are trying to keep to your meal plan this truly is a treat as it tastes so good.

But it is nice to get to have a unique flavour that's not the exact same as every other pre workout out there that we've all had a million times over already.

Only thing i would say & its down to personal preference but i did tend to use a little more water than the recommended 200ml of water per scoop.

I just felt at 200ml it was a little too strong for my liking but at around 300ml i found it a really enjoyable to flavour to drink before my workouts.

Definitely something i will be getting again in the future although i'm now intrigued to try any other unique flavours they may have.

D
Despina Fleur
Lemon squash

FINALLY i have found a pre workout that tastes nice!!

It tastes like good ol lemon squash not as zingie more sweet but i like it and its certainly better than many i have tried.

You know exactly what to expect with the flavour. No creative names or monkeys or dragons just lemon. Thank you.

R
Robert Kerr
Reflex have ruined a good pre workout.

The previous version of this was great.

Then Reflex decided to discontinue it and make this version which is terrible. No pump, no tingle, and always turns up clumped together and solid! It does NOTHING for me. I always used Reflex for all my supplements but they just lost a long time customer. Never buying this again, it's garbage and a waste of money!!

C
Connor
Powder is stuck together

Gutted as it has came and its completely solid when opened so not sure the quality is going to be there and going to be annoying to grind it down into powder to get an actual scoop

B
Brews And Donuts
I wouldn't often say this

This actually is the bomb! I train full body 5 days on 2 days rest. I normally take citrulline malate on its own. For me, this is normally enough as I enjoy the pump I decided to jump into this pre-workout and just went for that full dose straight away. That's two scoops in 400 mils of water. If like me you like things with a sour taste you will love this it's quite a lot to drink before a workout so I gave it the 30 minutes after drinking it. I was starting to get the tingling, before even going into the gym. Whilst in the gym, I smashed out a new PR for back squat and just felt more focused throughout the workout. I got the usual pump which I would normally get with the citrulline malate, but I also had a lot of focus. I think mainly due to the caffeine content, I found this easy and quite pleasant to drink and had one of the best sessions in the gym I've had in quite a few weeks it's an easy recommendation you need to try the bomb

R
Robert Kerr
Reflex have ruined a good pre workout.

The previous version of this was great.

Then Reflex decided to discontinue it and make this version which is terrible. No pump, no tingle, and always turns up clumped together and solid! It does NOTHING for me. I always used Reflex for all my supplements but they just lost a long time customer. Never buying this again, it's garbage and a waste of money!!

B
Bigdaddyp
Good pre workout, but the powder was set solid in the tub.

I spent a hile looking for a cheap pre workout without creatine, and decided to give this a shot.

I don't know if it's a poor product or My GYm Supplements's storage, but my tub was solid... After a few minutes with a fork, and squeezing the sides of the tub, I was able to get myself a scoop.

It dissolves well, tastes alright, and seems to work. I have one scoop before the workout, the another during, and I've had no issues with side effects yet. Whether there's more energy than other pre workouts, I can't say, but I definitely prefer zero creatine.

I'll try it again, assuming I got a bad tub. Assuming it's alright, it's good value for money.

A
Andyg
Unique flavour that tasted amazing! decent boosts for training

This is definitely one of my favourite pre workouts i've tried in quite a while.

Not only did the twizzle lolly flavour taste absolutely amazing but i've had a really good boost for my training sessions every time i've used it so far.

Depending how you use this pre workout you can either single scoop for 175mg of caffeine or double scoop for the full 350mg, however double scooping with drop the number of servings in the tub down to just 20 servings verses 40 if you single scoop.

Where i normally train at night after i finish work i've only really been using a single scoop serving because i don't want too much caffeine late at night but even with the 175mg servings i have still been having really nice boosts off of it to fuel me through my training sessions.

I found it mixes into the water perfectly every single time & is ready to drink within a couple of seconds.

But the best bit by far for me is the flavour, if you have a sweet tooth & like sweets but are trying to keep to your meal plan this truly is a treat as it tastes so good.

But it is nice to get to have a unique flavour that's not the exact same as every other pre workout out there that we've all had a million times over already.

Only thing i would say & its down to personal preference but i did tend to use a little more water than the recommended 200ml of water per scoop.

I just felt at 200ml it was a little too strong for my liking but at around 300ml i found it a really enjoyable to flavour to drink before my workouts.

Definitely something i will be getting again in the future although i'm now intrigued to try any other unique flavours they may have.

B
Brews And Donuts
I wouldn't often say this

This actually is the bomb! I train full body 5 days on 2 days rest. I normally take citrulline malate on its own. For me, this is normally enough as I enjoy the pump I decided to jump into this pre-workout and just went for that full dose straight away. That's two scoops in 400 mils of water. If like me you like things with a sour taste you will love this it's quite a lot to drink before a workout so I gave it the 30 minutes after drinking it. I was starting to get the tingling, before even going into the gym. Whilst in the gym, I smashed out a new PR for back squat and just felt more focused throughout the workout. I got the usual pump which I would normally get with the citrulline malate, but I also had a lot of focus. I think mainly due to the caffeine content, I found this easy and quite pleasant to drink and had one of the best sessions in the gym I've had in quite a few weeks it's an easy recommendation you need to try the bomb

A
Andyg
Unique flavour that tasted amazing! decent boosts for training

This is definitely one of my favourite pre workouts i've tried in quite a while.

Not only did the twizzle lolly flavour taste absolutely amazing but i've had a really good boost for my training sessions every time i've used it so far.

Depending how you use this pre workout you can either single scoop for 175mg of caffeine or double scoop for the full 350mg, however double scooping with drop the number of servings in the tub down to just 20 servings verses 40 if you single scoop.

Where i normally train at night after i finish work i've only really been using a single scoop serving because i don't want too much caffeine late at night but even with the 175mg servings i have still been having really nice boosts off of it to fuel me through my training sessions.

I found it mixes into the water perfectly every single time & is ready to drink within a couple of seconds.

But the best bit by far for me is the flavour, if you have a sweet tooth & like sweets but are trying to keep to your meal plan this truly is a treat as it tastes so good.

But it is nice to get to have a unique flavour that's not the exact same as every other pre workout out there that we've all had a million times over already.

Only thing i would say & its down to personal preference but i did tend to use a little more water than the recommended 200ml of water per scoop.

I just felt at 200ml it was a little too strong for my liking but at around 300ml i found it a really enjoyable to flavour to drink before my workouts.

Definitely something i will be getting again in the future although i'm now intrigued to try any other unique flavours they may have.

S
Shaher Ali
Great pump, a lot of tingles

Great pump product without the caffeine so helps fuel the nighttime work outs perfectly. It does make me extremely tingly but it has been dosed well. Flavour is tolerable but would prefer alternative flavours without caffeine in the future.

C
Connor
Powder is stuck together

Gutted as it has came and its completely solid when opened so not sure the quality is going to be there and going to be annoying to grind it down into powder to get an actual scoop

G
Gc
Definite energy boost, strongly flavoured

This is a powdered drink mix with an appreciable amount of caffeine, which seems to give a boost quicker than the equivalent amount of coffee or similar. The flavouring (I ordered the twizzle lolly flavour) is certainly potent, although to be honest it isn't entirely pleasant: starting off nice enough if quite overpowering at the recommended concentration, it comes across as quite artificial-seeming, with a slightly bitter aftertaste that further dilution doesn't seem to do much about. There usually seems to be a little residue left undissolved at the bottom of the glass as well even after some thorough mixing, but perhaps I just need to mix harder. To be honest, any issues with the taste aside it certainly delivers in the boost department and seems to make exercise rather easier, so can't complain about the effect. That said, it is rather pricey, so only worth ordering if you know you're going to use it; the powder inside the tub starts to clump together after a while (at least in the atmosphere around here), so it might be worth transferring to a properly airtight container for long-term storage.

B
Bigdaddyp
Good pre workout, but the powder was set solid in the tub.

I spent a hile looking for a cheap pre workout without creatine, and decided to give this a shot.

I don't know if it's a poor product or My GYm Supplements's storage, but my tub was solid... After a few minutes with a fork, and squeezing the sides of the tub, I was able to get myself a scoop.

It dissolves well, tastes alright, and seems to work. I have one scoop before the workout, the another during, and I've had no issues with side effects yet. Whether there's more energy than other pre workouts, I can't say, but I definitely prefer zero creatine.

I'll try it again, assuming I got a bad tub. Assuming it's alright, it's good value for money.

A
Andyg
Unique flavour that tasted amazing! decent boosts for training

This is definitely one of my favourite pre workouts i've tried in quite a while.

Not only did the twizzle lolly flavour taste absolutely amazing but i've had a really good boost for my training sessions every time i've used it so far.

Depending how you use this pre workout you can either single scoop for 175mg of caffeine or double scoop for the full 350mg, however double scooping with drop the number of servings in the tub down to just 20 servings verses 40 if you single scoop.

Where i normally train at night after i finish work i've only really been using a single scoop serving because i don't want too much caffeine late at night but even with the 175mg servings i have still been having really nice boosts off of it to fuel me through my training sessions.

I found it mixes into the water perfectly every single time & is ready to drink within a couple of seconds.

But the best bit by far for me is the flavour, if you have a sweet tooth & like sweets but are trying to keep to your meal plan this truly is a treat as it tastes so good.

But it is nice to get to have a unique flavour that's not the exact same as every other pre workout out there that we've all had a million times over already.

Only thing i would say & its down to personal preference but i did tend to use a little more water than the recommended 200ml of water per scoop.

I just felt at 200ml it was a little too strong for my liking but at around 300ml i found it a really enjoyable to flavour to drink before my workouts.

Definitely something i will be getting again in the future although i'm now intrigued to try any other unique flavours they may have.

C
Connor
Powder is stuck together

Gutted as it has came and its completely solid when opened so not sure the quality is going to be there and going to be annoying to grind it down into powder to get an actual scoop

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