“1000mg sodium is a game changer.”
This is by far my favourite electrolyte I’ve tried so far! 3 flavours and having 1000mg of sodium is a game changer.
Verified Reviewer
Limited time: Get a FREE viral water bottle worth £15
Amy Hunt, Ben Felton and 400,000+ runners train with Puresport.
Beat the heat with Ultra Electrolytes.
Peak summer hydration with 1000mg sodium electrolytes that actually replace what you sweat.
“Best electrolytes for performance”
The UK (and your body) isn't made for this heat.
If you're planning a run or outdoor activity, pre-hydrate and rehydrate. Water alone won't cut it.
Hottest May day on record as UK passes 34°C
40°C possible as rare red heat warning issued
UK breaks record for most 34°C days in a year
FRIDAY 26 JUNE 2026
Yellow alert
Amber alert
Red alert
No alert system
Heat-health alert levels as issued by the UK Health Security Agency for the 9 English regions. Contains public sector information licensed under the Open Government Licence v3.0 (UKHSA; boundaries: ONS).
Yellow warning
Unlikely to affect most people, but a risk to the most vulnerable.
Amber warning
A risk to health/life to vulnerable populations.
Red warning
A risk to health/life to everyone.
How the heat affects your body, and how electrolytes help.
As the temperature climbs, your body loses more than water. You lose a significant amount of sodium too.
400mg
sodium sweated out per hour of training at around 15°C.1
3.2%
slower per 5°C rise in temperature for mid-pack runners.2
690mg
sodium sweated out per hour once the air warms up.1
20°C
a tropical night: above this, your body can't cool down enough to recover properly.2
1060mg
sodium sweated out per hour in serious heat, more than a full sachet replaces.1
2.6x
the sodium you lose at 15°C, measured in the same athletes.1
Get started today. Get started with Puresport today.
ULTRA ELECTROLYTES (30 PACK) - ORANGE LEMONADE + SPORTS BOTTLE
Start your journey to optimal hydration today with Orange Lemonade Ultra Electrolytes 30 Pack and receive 30% OFF PLUS a free signature sports bottle worth £15 when you subscribe.
Elite Taste
Sugar Free
Vegan
1+ Million Sold
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Most Popular
FREE Sports Bottle worth £15
10% off every future order
Free delivery save £3.99
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Flexible Plan
30% OFF + FREE BOTTLE
30 servings. Delivered every 2 months.
£22.99
FREE Sports Bottle worth £15
10% off every future order
Free delivery save £3.99
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One-Time
£48.00£1.10 per serving
Ships today if ordered in time
30 day money-back guarantee
*Limited-time offer for first-time subscribers. After your first order, enjoy 10% off every Ultra Electrolytes 30 Pack subscription at £29.70 delivered every 2 months.
Description
Puresport's Ultra Electrolytes is a scientifically formulated electrolyte solution designed for athletes and active individuals who require optimal hydration during exercise. With a balanced combination of 1000mg sodium, 250mg potassium, 100mg magnesium, and 50mg calcium, this electrolyte drink replenishes essential minerals lost during sweat, helping to maintain hydration, muscle function, and endurance.
Key benefits
Hydration is crucial for maintaining performance, particularly during intense or prolonged physical activity. Electrolytes like sodium and potassium are essential to prevent dehydration and muscle cramps, which are common issues in endurance sports. Puresport's Ultra Electrolytes is designed to keep athletes hydrated, improve endurance, and support muscle function with sugar-free, refreshing flavours.
Ingredients list
Sodium (Chloride) 1000mg
Sodium is critical for maintaining fluid balance and enabling muscle contractions. It is the most important electrolyte lost through sweat and essential for performance during prolonged exercise.
Potassium (Chloride) 250mg
Potassium works with sodium to maintain fluid balance and muscle contractions.
Magnesium (Citrate) 100mg
Magnesium supports muscle function and reduces fatigue by regulating electrolyte balance.
Tri-Calcium (Citrate) 50mg
Calcium is essential for muscle function and nerve transmission.
Acidity Regulator (Malic Acid)
Natural Sweetener (Stevia)
Natural Lemon & Lime Flavouring & Natural Orange Flavouring
Shipping and returns
Free UK Shipping on subscriptions and orders over £50.
100% PERFORMANCE GUARANTEE. Not right for you after 30 days? No problem, we'll refund you.
Unopened products can be returned within 21 days of delivery for a full refund.
Please reference our Shipping and Returns page for more information or contact us at contact@puresport.co with any queries.
Join 400,000+
fuelling better.
laurabarracloughh
“Saltiest electrolytes in the game.”
Saltiest electrolytes in the game! It’s what we always wanted – top tier and a must in my training and nutrition not just for running but fitness across the board.
Verified Reviewer
“Hands down the nicest tasting electrolytes I’ve ever had”
“No more headaches post run.”
I get very sweaty when running – so much so you could exfoliate my face with the salt deposits! I recover much better from my runs and can get on with my day with no headache.
Verified Reviewer
“Much better than expected... And I already expected a lot”
“Not left feeling totally run ragged.”
I lose a lot of sweat during my runs and find these salty electrolytes to work amazing. They definitely replace what I’ve lost so I’m not left feeling totally run ragged post race.
Verified Reviewer
abbiejfit_
“When I don’t use these I get muscle cramps.”
I run a few times a week and find when I don’t use these that I get muscle cramps. At first I wasn’t sure about the salty taste but they’ve really grown on me.
Verified Reviewer
ellistaylor
“Felt the difference from the first packet.”
Felt the difference from the first packet. The taste is very salty but that’s to be expected when you’re replenishing the sodium in your system after a tough workout.
Verified Reviewer
cyclinggirly
Trusted by Olympians for performance and purity.
Informed Sport Certified. Last batch tested 20 May 2026.
Tested by the Puresport community.
Here’s what 250 runners who regularly use Ultra Electrolytes said about their experience.
93%
said it helped improve their performance
82%
said it’s the best electrolyte brand they’ve tried
97%
reported an overall positive experience
Upgrade your routine.
How it works.
1) Rip
2) Pour
3) Drink
4) Sweat
Frequently asked questions.
Anyone training or active in the heat: runners, cyclists, gym-goers and outdoor workers who lose salt through sweat and need to replace it faster than water alone allows.
The 30 Pack gives you 30 servings. At one serving a day that's a month; heavy sweaters training twice a day may go through it faster.
Most people feel better hydration and fewer cramps within the first few sessions, especially on hot days or long efforts.
Yes. One serving a day is well within safe electrolyte intake for active adults. Increase around harder or hotter sessions.
Most sports drinks are mostly sugar with token electrolytes. Ultra Electrolytes delivers 1000mg sodium with no sugar, so you replace what you sweat without the calories.
Mix one sachet with 500ml of water. Adjust to taste with a little more water if you prefer it lighter.
Alcohol is dehydrating and depletes electrolytes. Replacing sodium and fluids can help you feel better, though the only real cure is time.
Food matters, but during and after hard sweaty sessions a measured electrolyte drink replaces losses faster and more reliably than food alone.