Prerun

Name: Prerun
Brand: My Store
SKU: F100592
Price: 27.5 GBP
Availability: InStock
Rating: 4.87 (46 reviews)

Blueberry & Wild Pomegranate

Prerun is a simple, tasty pre-workout specifically formulated for running. Your new ritual that you drink 15 minutes before your run. Extensive benefits:

Significantly improved focus, energy, and endurance
Reduced signs of fatigue
Beginners: reduced running anxiety

Built From the Same Science Used in Elite Sport

£27.50

How Does It Work?

Prerun works by giving your body what it needs before the run actually starts. The blend of natural caffeine and L-theanine helps you feel alert and ready to move without the jittery spike you get from coffee. Beta-alanine and citrulline support blood flow and delay the feeling of heaviness in your legs, so it’s easier to settle into your pace and hold it. And the electrolytes replace what you’ll sweat out, helping you stay steady rather than fading halfway through.

The effect is simple: you feel more prepared, more willing, and more comfortable while you’re out there. It gives you the nudge to get out the door on the days you don’t feel like it, and once you’re moving, your run feels smoother and more controlled. Not hyped. Not wired. Just better running from the first mile.

Why We Made This

Because no alternative pre-workout supplements were formulated for runners.

Prerun was built to fuel the effort before the first step — with science-backed ingredients that support energy, focus, and endurance without the crash, the clutter, or the guesswork.

Simple. Effective. Made for runners who take their training seriously.

Directions

Mix 2 level teaspoons (approx. 10.7g) with 250ml of cold water. Shake it - or stir it - well, ideally leave it for 5 minutes to fully dissolve and then drink it 15 minutes before your run. The amount of water you use will affect the taste, so experiment and see what works best for you. If it’s cold outside, why not try adding hot water.

Key Ingredients List

Performance & Energy Blend

200mg Natural Caffeine – Enhances alertness, sharpens focus, and increases endurance capacity by mobilising fat stores for energy.
Creatine Monohydrate (3g) – Supports high-intensity performance, improves muscle power output, and delays fatigue in repeated efforts.
Beta-Alanine (2g) – Increases muscle carnosine levels, buffering lactic acid build-up to help you sustain harder efforts for longer.

Hydration & Electrolytes

Sodium – Maintains fluid balance and replaces electrolytes lost in sweat, reducing risk of cramps.
Potassium – Supports normal muscle contractions, nerve signalling, and hydration balance.
Magnesium – Contributes to muscle function, energy metabolism, and reduces fatigue.

Focus & Recovery Support

L-Tyrosine – Precursor to dopamine and norepinephrine, supporting mental focus and resilience under fatigue.
B-Vitamins – Aid energy metabolism and reduce tiredness, helping you recover quicker and stay consistent.

Try It, Risk Free

Feel the difference on your next run - or get your money back. If you don’t feel noticeably better energy, focus, and pace stability within your first 3 runs, email us and we’ll refund you. No questions asked.

Prerun

£27.50

5 stars: 42 (91%)
4 stars: 2 (4%)
3 stars: 2 (4%)
2 stars: 0 (0%)
1 star: 0 (0%)

Pre Run is the little kick up the backside I need to stop making excuses, lace up my Prime X3s and get out the door.

It gives me a proper boost without making me feel like I can hear colours. Ten minutes later, I’m ripping up the tarmac and pretending I’m much faster than I actually am.

Tastes good, works well and gets the job done. Definitely part of my running routine now.

I was very sceptical at first but thought why not give it a try ? And wow absolutely amazing product dies every thing it says and more 10/10 I've given a sample to my daughter to try defiantly one of my must running supplements 🙌

Absolutely fantastic product. Ran the London Marathon yesterday and loved every minute xx

Lou, thank you so much for this review! & for the other messages and comments across the pages. If you ever need anything, please let me know.
Joshua, Prerun Founder

Fantastic product definitely gives me more focus, will without doubt be a staple supplement that will be taken on every run if I had to find the tiniest fault……it tastes yuk so
I added a little diluted juice to it but that’s a me problem excellent product 10/10

Suzanne, I really appreciate this, it was great chatting with you on Instagram as well. I’m so glad you’re feeling the focus side of it, that’s exactly what I built it for. Honestly, the taste comment is completely fair, some people really like it, others not so much. I'm finding that's the trade-off of with keeping it clean and not opting for fillers or unnecessary sweeteners. Adding a bit of juice is a great shout though.
This review genuinely means a lot at this stage.
Joshua, Prerun Founder

Ordered the prerun powder and water bottle which arrived very quickly after using in my tempo/interval runs its been an absolute game changer 👏🏻 will definitely be using for my upcoming races (including the Chester triple) unfortunately the bottle arrived with no prerun logo/writing on it but after a quick email to inform them the owner emailed me back apologised and offered to send a new bottle out for me
5 ⭐️ customer service and product
Hoping they introduce more flavours and some prerun merch! ✌🏻

Pete, thank you so much for this review. I am incredibly pleased you are happy with Prerun and importantly, have seen a difference in your running. Also, your new bottle is on the way

Joshua, Prerun Founder

First time using Pre Run today and knocked a massive 2mins 40 seconds off my 10k

Steve, this is huge! Thank you so much for bringing this result back to the review.

I am so pleased it has helped, and hope it continues to drive your PBs.

Joshua, Prerun Founder

Great stuff, really keeps my mind focused during my long runs and just as much on the interval runs

Andrew, thank you for leaving this review.

An increase in focus was a massive part of building Prerun, so it's incredibly pleasing to see this feedback come through.

Joshua, Prerun Founder

This has changed the game! Honestly. My runs feel easier, I can run for longer without feeling tired. My only negative is the taste it reminds me off a pre workout shot but I’ll take the taste because it’s made a massive difference

I was so sceptical. I thought all it would do is make me need the toilet half way through a run.
The first time I used it I did my longest run of the year so far and loved every minute of it. No rethinking my life choices after just 2mins. No “I can’t do this” thoughts. And even after an hour I felt strong and that I could have run much further.
A fluke I thought, must have just been a good run day. So my next run was on the treadmill which I don’t enjoy. But again I felt strong throughout my run, felt like there was an extra spring in my step and again still felt good at the end.
So I’m a convert now!
For info I’m just getting back into running after a few years away. Running 10-12k distance currently but with this magic stuff I might even consider going back to running half’s!

Firstly this has been superb changing how the start of my runs feel. Tried a few times before I’ve left review and it’s really made my legs feel very different. Only criticism is I’m not mad keen on the flavour but if it helps like this I’d still drink it !

It genuinely works! Felt super strong on my runs since using the product. Will be using for the rest of my training block!

Jessica, I am so happy to hear it's helping your runs. Enjoy the rest of your block, and thank you for sharing your feedback.

Joshua, Prerun Founder

A replacement for a discontinued product I used to use, it gives me the same kick up the arse to get out there, and supports me whilst running too.

Flavour isn't bad wouldn't mind a few options if there was a choice when ordering as this isn't something I'd normally opt for but not bad, however what a great product gave me all I needed for run really noticed after about 4k still plenty of gas in tank even in 27c heat so happy day will definitely come back.

Scott, you are absolutely right, and I am excited at the prospect of bringing new flavours. The feedback that it works i.e., improves your running, is the green light for me to go back into production briefing with momentum to bring bigger and better flavours, and more product lines. Thank you.
Joshua, Prerun Founder

I have only used this a few times so far but it genuinely seems to be helping my runs feel less sluggish!

Wonderful, thank you so much for trying Prerun and then taking the time to leave a review Claire. Your feedback is the singular goal of Prerun, to make your runs feel better.
Joshua, Prerun Founder

I’m pretty new to running and normally run first thing in the morning, so don’t have time to have breakfast beforehand but felt I was missing out on something running completely unfuelled. I have a bog standard pre-workout and had used this for running a few times but wasn’t a good fit at all. Made me feel jittery and like I had a sudden burst of energy but in the long run, not really helping at all.

When an advert came up for Prerun I thought it’d be worth a go. I’ve only used it a few times, but so far I think it makes a real difference. I was a bit worried about the taste when I seen some of the reviews, but honestly I think it’s good, not sharp or bitter, or overly sweet like most pre-workouts. I feel better fuelled and as though it keeps working throughout the whole run, rather than just a 10 minute burst of energy.

Will definitely re-order!

Thank you so much for leaving this review, it blows me away to see such active and engaged customers. Also, as I said privately, that opening paragraph could double as my exact response to “why did you start Prerun?”. Thank you so much for relating to the product story, and then for sharing your feedback with me like this.
Joshua, Prerun Founder

I’m a beginner runner looking to improve my stamina and endurance, and can honestly say this helps. I feel more energized when I’ve had it. It says wait 15 mins, I’d say more 30, but that’s preference. Taste is okay, bit of an acquired one, but far from awful! If you are looking for something to get you ready to run without breaking the bank or making you feel ill, this is the one for you. Definitely recommend.

Gemma, thank you so much for leaving this review. I also love that you have played around with it and feel 30 minutes is optimal for you. The beginning of the running journey is by far the most rewarding so I hope you push on and enjoy every minute on your feet.

Joshua, Prerun Founder

I’m a casual runner, and needed something that was going to be able for me to digest easily and give me a natural boost mid run. This is it. Great taste, acted within 2km, no crash afterwards. I’m a fan now, highly recommend it, also it’s good value.

Jeff, this an extremely good review! Thank you for your feedback, both publicly and privately. I hope it continues to serve your runs, and if you need anything let me know.

Joshua, Prerun Founder

Absolutely smashed my long run today .The first time I've used pre run this morning...Great taste I felt great all 20k if my run
.....

Lee, thank you so much for trying Prerun, and for writing this review. I'm so pleased that you found a noticeable difference. Also 20k run, good work!

Joshua, Prerun Founder

I was looking for a 'Pre-workout' for runners, and wondered if one even existed when I stumbled upon Prerun

Of course I immediately bought it, along with the cute little bottle

I'm currently training for several half marathons, and since taking this I've found I'm more focused during runs and less fatigued

The taste isn't offensive and it doesn't upset my gut at all

Definitely worth a try! 🙌

Vik, I sincerely appreciate this review. This truly helps build trust amongst those who are not sure yet, so I am so very thankful for you writing it. Also, it sounds like you've got quite a busy training block, all the best with your upcoming HM's, tag Prerun in your results so I can see.

Joshua, Prerun

Used today for my first half marathon, really did help me . I have lost 8.6 stone in the last year and have taken to running and really enjoyed it . I have looked for products to help me and most are crap , I used pre run and sis gels and chews and knocked it out of the park today

Firstly, incredible work dropping that weight, keep driving forwards Lewis. Secondly, thank you so much for trying Prerun, I am so pleased that you're happy with the impact it has. SiS gels are great, combining the two is a great combination. Thanks again.

Joshua, Prerun Founder

Good product will order regularly and love how genuine the owner is in finding your thoughts on the product, both positive or negative comments ( not that there is anything negative) from my point of view .Keep up the good customer service

Jamie, thank you so much for writing this review, and for contacting me directly. I am extremley keen that Prerun becomes a community, and speaking with you directly really felt like that.

Joshua, Prerun Founder

Tastes gross but it does work so may be worth necking it like a shot of tequila

Hayley, thank you for writing this, it genuinely helps.

Taste is a huge challenge when developing a product like this. I made a very conscious decision to prioritise high-quality, effective ingredients without adding unnecessary fillers; which are regularly used in other products to improve taste and dissolvability. It does mean the flavour isn’t as 'easy' as some alternatives, but the trade-off is a cleaner, higher quality formula.

That said, I completely understand your point and it’s something I’ll absolutely take on board for the next round. Maybe a citrus lemon & lime is the answer.

Joshua, Prerun Founder

It's ok, little bit bitter, doesn't dissolve brilliantly and not sure it's made a massive impact to my runs

Jules, I appreciate you sharing this, thank you.

The bitterness and dissolvability come from a deliberate choice to prioritise high-quality ingredients without adding fillers that smooth those things out - many alternatives prioritise flavour. On the impact side, that’s the most important part, and something I’m always looking to improve.

I really value the feedback, it all goes into making the next version better.

Joshua, Prerun Founder

Great product, worth trying

Monika, thank you so much for this review.

I'm incredibly pleased that you're happy with Prerun.

Joshua, Prerun Founder

Great rate instant results

Thank you Jacquie, I really appreciate you leaving this review.

Joshua, Prerun Founder

Key Active Ingredients

Creatine Monohydrate 3,000mg

Creatine enhances strength, power, and endurance by increasing your muscles’ ability to produce energy during high-intensity effort.

It works by replenishing ATP — the energy currency of your cells — allowing you to train harder, recover faster, and maintain output across longer sessions.

For runners, that means stronger strides, better resilience in the later stages of your run, and support for recovery between efforts. It’s one of the most researched and effective supplements in sport — and a cornerstone of Prerun’s performance formula.

L-Citrulline Malate 1,000mg

L-Citrulline Malate enhances endurance, reduces fatigue, and improves blood flow by increasing nitric oxide (NO) production and supporting the urea cycle.

Once ingested, L-citrulline is converted into L-arginine in the kidneys, which then stimulates the synthesis of nitric oxide — a vasodilator that widens blood vessels and improves oxygen and nutrient delivery to working muscles. This enhanced circulation supports sustained performance and may delay the onset of muscular fatigue during both aerobic and anaerobic exercise.

The malate component (malic acid) contributes to cellular energy production within the Krebs cycle, further supporting ATP generation and reducing lactic acid accumulation. Together, this combination has been shown to improve time to exhaustion, reduce muscle soreness post-exercise, and support recovery in endurance athletes.

Beta Alanine 900mg

Beta-Alanine enhances muscular endurance and buffers fatigue by increasing intramuscular carnosine levels, which helps regulate pH and delay lactic acid accumulation during high-intensity exercise.

When Beta-Alanine is consumed, it combines with L-histidine to form carnosine — a dipeptide stored in skeletal muscle. Carnosine acts as an intracellular buffer, neutralising hydrogen ions (H⁺) that accumulate during anaerobic glycolysis, which cause the drop in pH (acidosis) associated with fatigue and muscular burn.

By elevating muscle carnosine concentrations, Beta-Alanine can extend time to exhaustion, improve performance in sustained high-output efforts, and support repeated sprint and interval training. For endurance athletes, this translates to greater efficiency under fatigue and better tolerance to threshold efforts.

Calcium HMB 550mg

Calcium HMB supports muscle preservation, recovery, and strength by reducing muscle protein breakdown and promoting muscle repair — especially during periods of high training stress or caloric deficit.

HMB is a metabolite of the branched-chain amino acid leucine, and plays a key role in regulating muscle protein turnover. It works by attenuating proteolysis (muscle breakdown) while simultaneously supporting anabolic processes, helping to preserve lean muscle mass during prolonged or intense training.

The calcium-bound form (Ca-HMB) improves bioavailability and absorption. Research shows that HMB can reduce markers of muscle damage (like creatine kinase), enhance recovery speed, and support adaptations in both strength and endurance athletes — particularly when training volume increases or during taper and deload phases.

Beetroot Extract (6% Nitrate) 500mg

Beetroot extract enhances aerobic performance, oxygen efficiency, and endurance by increasing nitric oxide (NO) production through its high dietary nitrate content.

Once consumed, dietary nitrates are converted into nitric oxide via the nitrate–nitrite–NO pathway. Nitric oxide acts as a vasodilator, relaxing blood vessels and improving blood flow, which enhances oxygen delivery to working muscles and reduces the oxygen cost of exercise.

For endurance athletes, this translates to improved exercise efficiency, greater time to exhaustion, and better tolerance of high-intensity efforts. Studies have shown beetroot supplementation can improve performance in events lasting from 5 to 30 minutes and may aid recovery by supporting vascular function and reducing inflammation.

Caffeine Anhydrous 200mg

Caffeine Anhydrous enhances alertness, perceived energy, and endurance performance by stimulating the central nervous system and modulating key neurotransmitters involved in fatigue and focus.

As a dehydrated, highly concentrated form of caffeine, it is rapidly absorbed and acts primarily as an adenosine receptor antagonist — blocking the neurotransmitter responsible for drowsiness and mental fatigue. This leads to increased dopamine activity, heightened focus, and reduced perception of effort during prolonged or high-intensity exercise.

Caffeine anhydrous has been shown to improve time to exhaustion, reaction time, and overall endurance capacity. In runners, it can enhance pacing strategies, mental resilience, and mid-race performance, especially when consumed pre-exercise at doses aligned with evidence-based protocols (typically 3–6 mg/kg bodyweight).

N-Acetyl L-Tyrosine 150mg

N-Acetyl L-Tyrosine (NALT) supports cognitive function, mental focus, and stress resilience by replenishing catecholamine neurotransmitters depleted during prolonged physical or psychological stress.

NALT is a highly bioavailable form of L-tyrosine — a precursor to dopamine, norepinephrine, and epinephrine. These neurotransmitters are critical for maintaining alertness, motivation, and coordination during intense or prolonged activity. During endurance exercise, their levels can drop, contributing to central fatigue and reduced mental performance.

Supplementing with NALT helps sustain mental clarity and reaction time under fatigue, particularly during long runs, races, or training blocks with high cognitive and physical demand. Its acetylated form improves solubility and absorption compared to standard L-tyrosine, making it a preferred choice in pre-workout formulations for focus and mental endurance.