Elektrolyte
Long run to race day: the mild bottle you’ll still want in hour three.
Informed Sport certified · 60-day guarantee
Developed with two-time Olympic champion Alistair Brownlee.
Train with it before you race with it: 60-day guarantee, opened or not. See Delivery and returns
One-time purchase or Flexible Plan, your choice. No subscription needed.
Made in the UK
Informed Sport certified
390mg sodium · 4 electrolytes · Zero sugar
“… during marathon preparation. … They are light and sit in the stomach well! …… They are light and sit in the stomach well …”
“A great product which totally agrees with my stomach. …… totally agrees with my stomach …”
“Really great taste and ingredients list!”
Batch tested
Our philosophy
Own your physiology. We develop what it takes for you to do just that.
Same philosophy, every product: based on the latest science, test it in the real world, stripped of anything that isn’t needed to perform again tomorrow.
Used by elite athletes around the world.
How to use
One sachet in 500ml of cold water, before and during training. A second serve on hot or long days.
| Before and during training | 1 sachet in 500ml of cold water |
|---|---|
| Hot or long days | A second serve |
| Most heavy-training weeks | One or two a day |
For a plan built on your race, your sweat and the weather, use Your plan on this page. For a personal recommendation, email support@truefuels.com.
What it does
390mg sodium per sachet, with chloride, potassium and magnesium. Zero sugar.
Built for long, hot and heavy-sweat sessions. Two flavours: Mint and Watermelon.
- 390mg sodium
- 0g sugar
- 150mg potassium
- Informed Sport
Delivery and returns
Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.
The 60-day guarantee covers opened products. If it isn’t right, email support@truefuels.com within 60 days of purchase for a full refund.
You can cancel an order within 14 days, then return unopened products in their original condition within a further 14 days. We refund in full within 14 days of receiving them. Return postage is yours unless the item is faulty.
Faulty or damaged? Email support@truefuels.com with your order number and a photo. Full details in our returns and refunds policy.
Elektrolyte · from £24.95
01 / The problem
Electrolytes · 390mg sodium
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Week 1
Most electrolyte drinks:
Fine for a week.truefuels: 390mg sodium in every sachet. -
Month 1
Most electrolyte drinks:
Sweet for a month.truefuels: Mild enough to sip all session.Most electrolyte drinks taste like a sweet you didn’t ask for.
-
Years
Most electrolyte drinks:
So the bottle comes home half full.truefuels: Built for the long game.Four electrolytes, nothing to get tired of, nothing you’d think twice about drinking every day.
“fresh, light taste that doesn't bore me even after months now. …”
02 / Why it works
Mild enough to sip all session.
Two flavours
Mint or Watermelon. Zero sugar.
390mg sodium
For long, hot and heavy-sweat sessions.
150mg potassium
With 25mg magnesium and 610mg chloride.
With your gels
98mg or 386mg sodium a gel. 390mg a bottle.
03 / How much
Long run to race day.
Built for long, hot and heavy-sweat sessions.
One sachet in 500ml of cold water, before and during training.
A second serve on hot or long days.
Built for race day, and every long run before it.
Mild enough that you’ll still want it in month three.
“… I am training for a 70 mile ultra in June and wanted to give gels and electrolytes a try. …”
04 / Proof
“Refreshing without being over bearing.”
4.8
329 reviews
- 96%
- rated Electrolytes 4 or 5 stars
68 of 71 reviews rate it 4 or 5 stars · Informed Sport tested batch by batch · Made in the UK
-
“I bought the mint electrolyte and found it refreshing without being over bearing which can sometimes be the case with other products on the market. …”
David R. · review via Judge.me -
“Always dubious about using a new product but any worries I had were soon gone. …”
Mark W. · review via Judge.me -
“… salts were super handy to carry and way better on the stomach than previous brands. …”
Benjamin H. · 280km, Atlas Mountains · review via Judge.me -
“Subtle flavour for ease of consumption. Great impact on tough training and racing.”
MR A.F. · review via Judge.me
05 / The system
Works best as a system.
-
Energiegele
40g Carbs per gel
From £29.95
-
CoreCtrl
4,000mg L-Taurine
From £28.95
-
Flexible Plan
A bottle a day, never a box short.
- Every delivery50% off your first month, then 30% off every delivery
- Every monthDelivered every month
- Month 3Free bottle after your third month
- Month 6Free Pro membership in month six: free shipping, early access to new drops and merch
- AnytimeSkip, reschedule or cancel anytime
The Fourth Discipline™
The system is ours. The destination is yours.
06 / Formula
What’s in the bottle
390mg sodium, 150mg potassium, 25mg magnesium. Nothing added for show.
This formula doesn’t stop evolving once it ships. We keep testing and refining it with sports scientists and our own athletes.
See our processFrom 1g of Himalayan rock salt.
From Himalayan rock salt
8% of your daily reference intake, in every stick.
As magnesium citrate
One sachet in 500ml of cold water, before and during training. A second serve on hot or long days.
Per sachet: 0 kcal, 0g sugar, 1g salt.
07 / How to use
Mix it. Sip it. Repeat it.
One sachet in 500ml of cold water, before and during training. A second serve on hot or long days. On race day:
Your kit
CoreCtrl
Energy Gels
Electrolytes
Your kit
- CoreCtrl
- Energy Gels
- Electrolytes
Your kit
- CoreCtrl
- Energy Gels
- Electrolytes
Your kit
- CoreCtrl
- Energy Gels
- Electrolytes
Race protocol · Marathon
- Hot race
- 1 CoreCtrl sachet a day from 7 days before, the eighth on race morning
- 30 min before
- 1 Electrolytes in 500ml water
- Pre-start
- 1 Energy Gel
- Energy Gels
- 2 an hour = 80g carbs. Low Salt for normal sweat; salt marks or extreme heat: High Salt
- Hydration
- 150 to 250ml per gel. Heat or heavy sweat: 1 Electrolytes
- Straight after
- 1 Electrolytes in 500ml water
Race protocol · Half Ironman
- Hot race
- 1 CoreCtrl sachet a day from 7 days before, the eighth on race morning
- 30 min before
- 1 Electrolytes in 500ml water
- Pre-start
- 1 Energy Gel
- Energy Gels
- bike 2 to 3 an hour = 80 to 120g carbs. Run 2 an hour = 80g carbs. Low Salt for normal sweat; salt marks or extreme heat: High Salt
- Hydration
- 400 to 800ml an hour. Heat or heavy sweat: 1 Electrolytes
- Straight after
- 1 Electrolytes in 500ml water
Race protocol · Ironman
- Hot race
- 1 CoreCtrl sachet a day from 7 days before, the eighth on race morning
- 30 min before
- 1 Electrolytes in 500ml water
- Pre-start
- 1 Energy Gel
- Energy Gels
- bike 2 to 3 an hour = 80 to 120g carbs. Run 2 an hour = 80g carbs. Low Salt for normal sweat; salt marks or extreme heat: High Salt. Add on-course nutrition as needed
- Hydration
- 500 to 900ml an hour. Heavy sweaters: Electrolytes
- Straight after
- replace 100 to 150% of the fluid lost, 1 Electrolytes in 500ml water
Race protocol · HYROX
- Hot race
- 1 CoreCtrl sachet a day from 7 days before, the eighth on race morning
- 30 min before
- 1 Electrolytes in 500ml water
- Pre-start
- 1 Energy Gel
- Energy Gels
- mid-race (about 40 min), 1 gel, optional. Low Salt for normal sweat; salt marks or extreme heat: High Salt
- Hydration
- sip at each station
- Straight after
- 1 Electrolytes in 500ml water
08 / Your plan
Get your personalised fuelling plan.
If you have tested your sweat rate or sodium concentration, entering these will sharpen the fluid and electrolyte recommendations. Leave blank to use the algorithm's estimates.
Algorithm informed by published research on exercise fluid replacement, sweat rate, sweat sodium concentration and carbohydrate use during endurance exercise, including Sawka et al. (2007), Jeukendrup (2011) and Baker (2017). Constants: 40 g carbohydrate per gel, 1 g salt per high-salt gel, 0.25 g salt per low-salt gel and 1 g salt per electrolyte serving. Scientific estimate only. Individual variation exists. Validate all recommendations in training before race day.
09 / Athletes
Trusted from the podium to the parkrun.
Tap a face to read their story.
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Ben Millar
“I’m also a massive fan of the watermelon electrolytes. They’re my daily go-to.”
Ben Millar · Reflex-Nopinz
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Joanna Tallmann
“My running has improved noticeably. That is due to consistent training and growing experience, but above all to slowly getting the hang of fuelling.”
Joanna Tallmann · Ultrarunner
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Malachi Cashmore
“Before I started fuelling my key sessions properly, I thought dead legs and collapsing on the floor after long rides was normal.”
Malachi Cashmore · Professional triathlete
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Alistair Brownlee
“The point is to know the job each product is doing.”
Alistair Brownlee · Co-founder
10 / Questions
Questions? Answered.
How many a day?
One sachet in 500ml of cold water, before and during training, and a second serve on hot or long days. Most heavy-training weeks: one or two a day.
Is it sweet?
Zero sugar, mild on purpose. “The taste takes a little adjusting as the flavour is really subtle compared to other electrolyte brands.” Lorraine P., review via Judge.me
Can I switch before my race?
Not on race day. Use it on your long runs first; you have 60 days to decide.
I also use the gels. Do I need both?
A Low Salt gel carries 98mg sodium, a High Salt gel 386mg, a sachet of Electrolytes 390mg. Gels in the pocket; Electrolytes in the bottle, between gels and on days without them.
Why not a cheaper tub?
£0.62 a bottle on the Flexible Plan in a box of 20. A little more per serve, but you’ll actually finish the box.
Is it OK to drink every day?
Yes, at one or two a day. On a low-salt diet for medical reasons, ask your doctor first.
Delivery?
Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.
Which flavour should I pick?
Both are mild and zero sugar, with the same 390mg sodium, potassium and magnesium per sachet. Pick by taste: Mint or Watermelon.
Is it tested for banned substances?
Yes. Every batch is Informed Sport certified before it ships.
What if it isn’t right for me?
You have 60 days to decide. If it isn’t right, email support@truefuels.com for a full refund.
“Took the electrolytes before and during the event … helped me post my best GBR age group result to date”
truefuels® · The Fourth Discipline™