Endurolytes Extreme Powder is a full-spectrum electrolyte powder for runners, cyclists and triathletes training over long distances or in hot conditions.
Each scoop provides six electrolytes—including 120mg sodium, 75mg potassium, calcium, magnesium, chloride and manganese—in a light watermelon formula that dissolves cleanly in bottles and hydration packs.
Each tub supplies 90 servings and only 5 calories per serving at approximately 44p per scoop. The formula contains no added sugar or caffeine and is Informed Sport batch-tested for drug-tested athletes.
- Designed for heavy sweating, hot-weather training and longer endurance sessions
- Six-electrolyte, full-spectrum chelated mineral blend
- Three times more sodium and potassium than original Endurolytes
- Informed Sport batch-tested — suitable for drug-tested athletes
Who is it for?
- Athletes who sweat heavily or notice salt stains on clothing
- Training or racing above 25°C (77°F)
- Not yet acclimatised to hot or humid conditions
- Events lasting two hours or more
- Prone to cramping during or after exercise
- Prefer mixing electrolytes directly into their bottle
Electrolytes per scoop (2 g)
Each 2 g scoop provides a full-spectrum blend of six electrolytes, including sodium, chloride, potassium, calcium, magnesium and manganese.
|
Electrolyte |
Per scoop (2 g) |
|
Sodium (as sodium chloride) |
120 mg |
|
Chloride (as sodium chloride) |
72 mg |
|
Potassium (as potassium citrate) |
75 mg |
|
Calcium (as calcium lactate gluconate) |
40 mg |
|
Magnesium (as magnesium lactate gluconate) |
20 mg |
|
Manganese (as manganese gluconate) |
0.5 mg |
Serving size: 1 scoop (2 g). Servings per container: 90. Calories per serving: 5.
How to use
Mix 1 scoop into approximately 475–830 ml of water and consume hourly during exercise. In extreme heat or very long events, adjust dose based on sweat rate. Pair with Hammer Gels, Energy Bars or Perpetuem Solids if you also need an energy source.
Dietary information
- Diabetic friendly
- Gluten free
- Vegan friendly
- Kosher certified
- No added sugar — sweetened with monk fruit
How does it compare?
Endurolytes (capsules) — standard sodium — everyday training. Endurolytes Extreme (capsules) — 3x higher sodium — heat and heavy sweating. Endurolytes Extreme Powder — 3x higher sodium — bottle-based hydration. Endurolytes Fizz (tablet) — standard sodium — convenient flavoured hydration.
Why full-spectrum electrolytes
Replacing sodium alone is not enough. The body also loses potassium, calcium, magnesium and manganese through sweat. Endurolytes Extreme Powder uses chelated mineral forms for efficient absorption. Most competing products contain only four electrolytes — this formula provides six. Backed by our 100% Quality Satisfaction Guarantee.
FAQ
What is the difference between Endurolytes, Endurolytes Extreme and Endurolytes Extreme Powder?
Endurolytes is the original capsule for moderate conditions. Endurolytes Extreme capsules contain three times more sodium and potassium for heat and heavy sweating. Endurolytes Extreme Powder delivers the same higher-sodium formula as a powder you mix into your bottle.
Why use this instead of salt tablets?
Salt tablets replace only sodium and chloride. This product provides all six electrolytes for efficient absorption and better performance support.
Does it contain caffeine or sugar?
No. No caffeine, no added sugar. Sweetened with monk fruit, 5 calories per scoop.
Is it suitable for drug-tested athletes?
Yes. Every batch is Informed Sport tested, screening for substances prohibited under WADA and UK Anti-Doping.
Can I use it with other Hammer products?
Yes. Treat Perpetuem as calories only and cover electrolytes separately with this product. If using HEED, add Endurolytes Extreme Powder in hot conditions or when sweat rate is high.
How many servings are in one tub?
Each tub contains 90 servings (180 g). At one scoop per hour, a single tub covers 90 hours of training or racing.
How much does each serving cost?
At £39.95 per tub and 90 servings, each scoop works out at approximately 44p — making it one of the most cost-effective full-spectrum electrolyte options available.
Can it be mixed with Perpetuem or HEED?
Yes. Perpetuem is a calorie source and contains only a small amount of sodium, so adding Endurolytes Extreme Powder ensures you meet your full electrolyte needs during long efforts. HEED already contains a moderate electrolyte dose, so use Endurolytes Extreme Powder as a top-up in hot conditions or when sweat rate is high.
Does it leave residue in a hydration pack?
No. The powder dissolves cleanly in water and does not leave residue or staining in hydration bladders or tubes, making it well suited to pack-based hydration on long runs or rides.
Is it suitable for cycling, running and triathlon?
Yes. The formula is designed for any endurance discipline involving sustained effort, heat or heavy sweating — including road cycling, trail running, marathon, ultra-distance events and triathlon from sprint to Ironman distance.
What is the difference between sodium and sodium chloride?
Sodium is the active electrolyte mineral. Sodium chloride (table salt) is the compound used to deliver it, consisting of sodium and chloride ions. The label lists 120 mg of sodium — this is the elemental sodium content, not the weight of the sodium chloride compound, which would be a higher figure.
Why is the sodium lower than some electrolyte sachets?
Many single-serve sachets are formulated for one-off use and pack a large sodium hit into a single dose. Endurolytes Extreme Powder is designed for hourly, adjustable dosing across multi-hour events. At 120 mg sodium per scoop, you can dial intake up or down based on sweat rate, conditions and duration — avoiding the risk of over-supplementing sodium in cooler or shorter efforts.
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Let customers speak for us
Extremely useful to use whilst cycling, removes the faff of opening gels whilst cycling and the solid bottle makes it easy to get in / out of jersey pockets.
Brilliant product - i use these in all my endurance events - some lasting up to 20 hours. These are great to ensure you get the required electrolytes without over hydrating.
Great service and the products are amazing, especially for endurance sports. I'm a big fan of the Endrolytes Electrolyte Caps. Their magnesium supplement and vitamin D are also very very good! I would highly recommend.
I’ve used Hammer products for around 6 years now & my favourite by a mile is the hammer Perpetuem, it’s fueled my last 100 mile ultra marathon not to mention multiple long distance triathlon's . It has 180calories per serving and it’s 34g of carbs & 5g of protein seems to work well . I’d strongly recommend for anyone who wants to take on ultra races as this fuel will support you when you need it most .
I started using Hammer Heed and Perpetuem 5 years ago and it's been such a game changer for my. Finding nutrition you can trust is so important for any athlete and I highly recommend Hammer Nutrition for any distance and any sport.
I couldnt race without hammer products. Heed is my favourite, such an amazing product. Paired with the gels it makes a great fueling recipe. Always fast shipping
Wonderful product for general Well being and Recovery. Great quick shipping.
Love all your products. I personally will concentrate on the perpetuum for my long swim(45km) as it feels like a meal every 4mins.
Thank you
great taste! great weight to calorie ratio! thanks
Great quality feel and easy to drink from whilst riding.
No plastic smells either.
Just need a few different colours?
Help me through a 70 miler. Would recommend 👌
Frequently Asked Questions
How long will my delivery take and how much does it cost?
Orders placed before 2:00 PM (UK time) are dispatched the same working day. Standard delivery to mainland Great Britain takes 2–5 days at a flat rate of £3.50, or free on orders over £10.
Large tubs are automatically upgraded to DPD next-day delivery. Shipping to Northern Ireland, the Channel Islands, and the Scottish Highlands costs £4.50, or free on orders over £80.
Can I change or cancel my order after placing it?
Because we process and dispatch orders quickly, we are usually unable to modify products, delivery methods, or addresses after submission.
To cancel an order, you must contact us on the same calendar day it was placed. If dispatch has already occurred, you can return the unused items within 14 days at your own shipping expense.
What is your returns policy if I change my mind?
You have 14 days from the day after delivery to cancel your order. Items must be unused, in their original packaging, and in resaleable condition. Important Step:
You must email us via the bottom of our Home Page first to obtain a Returns Authorisation Number and a free Royal Mail returns sticker; unauthorised returns cannot be processed.
Note that opened, sealed supplements cannot be returned for hygiene reasons.
What should I do if my order is damaged, faulty, or incorrect?
Check your parcel immediately upon arrival. If there is an issue, notify us within 48 hours of delivery via teh contact us at the bottom of our Home page.
Please include your order number, a description of the issue, and photos of the damaged items and packaging. We will provide a free replacement or full refund.
How long do refunds take to process?
Once your return is received, inspected, and approved, we process refunds back to your original payment method (card, PayPal, or bank transfer).
This typically takes place within 7 working days, and always within a maximum window of 30 days.
Are Hammer Nutrition products safe for drug-tested athletes?
Yes. Key products within our range—including Endurolytes (4ct/120ct), Endurolytes Extreme (3ct/120ct), Endurolytes Extreme Powder, and Endurolytes Fizz - are officially Informed Sport certified.
Additionally, our products are manufactured in strict ISO, GMP-compliant, and SQF Level 3 Certified facilities to ensure the highest standards of food safety and purity.
What do you use to flavour your sports nutrition products?
We use only premium ingredients with zero artificial flavours, artificial sweeteners, or chemical colorants.
Our natural flavours are extracted from real food sources (such as fruits, essential oils, and botanicals) in full compliance with FDA regulations.
They are entirely derived from non-allergenic materials and are formulated for a clean, subtle, non-sweet taste.
What should I do if my order has not arrived?
Estimated transit times are 2–5 days. If your parcel has not arrived within 5 days of placing your order, notify us immediately via our contact us at the bottom of our Home page.
We will launch an investigation with the carrier and provide updates or arrange a replacement where appropriate.
Do you accept backorders for out-of-stock items?
No, we do not accept backorders. If an item is currently unavailable, you can enter your email address in the "email me when back in stock" widget directly on the product page to receive an automated real-time notification the moment inventory is replenished.
Are your supplements suitable for specific dietary restrictions?
Our clean sports nutrition range is formulated to support optimal body function and is completely free from gluten, artificial preservatives, and artificial colorants.
If you have specific medical conditions or severe allergen concerns, we recommend checking the explicit ingredient panels or consulting a healthcare professional prior to consumption.