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Product Details


Designed for the harshest conditions, as well as other variables that require higher amounts of specific electrolytic minerals, Endurolytes Extreme has you covered! With each capsule containing 300 mg of sodium chloride (salt) and 75 mg of potassium per capsule—three times more than the original Endurolytes formula, yet still in a balanced 4:1 ratio—Endurolytes Extreme is guaranteed to resolve even the toughest electrolyte replenishment challenges, especially:

  • During unusually hot-weather events
  • If you're not acclimated to the weather conditions
  • If you consume a high-sodium diet
  • If you are "physiologically predisposed" to cramping (e.g., if you have extremely high sweat rates)
  • During early season training, a time when fitness levels are low, resulting in higher mineral losses

If one of more of these categories describes you or your circumstances, Endurolytes Extreme is the product you need.

Nutrition Labels:

Endurolytes Extreme Capsules
Supplement Facts
Serving Size: 1 capsule
Amount Per Serving %DV
Sodium (as Sodium Chloride) 120mg 5%
Chloride (as Sodium Chloride) 180mg 5%
Calcium (as Chelate) 40mg 4%
Magnesium (as Chelate) 20mg 5%
Potassium (as Citrate) 75mg 2%
Manganese (as Chelate) 500mcg 25%
* The Percent Daily Values are based on a 2,000 calorie diet.
Other Ingredients: Stabilized Rice Bran, Ginger Root, Vegetable Capsules (plant cellulose and water).

Fueling & Usage Tips

Endurolytes (AES vol 7.14)

Endurolytes (AES vol 7.14)

Three ideal options to enjoy cramp-free exercise!

Endurolytes Extreme

Endurolytes Extreme

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Take it to the Extreme

Take it to the Extreme

New ultra electrolyte formula

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Product Reviews

Rated 3 out of 5 by from endurolytes extreme I purchased these without looking at the label first and actually prefer more potassium than sodium as it works better and faster for me with my leg muscle cramping during rides. I will go back to the regular endurolytes and hopefully you will always make these. I am not real happy with these extremes and still have 3 unopened bottles and wish I could return them and replace with the regular endurolytes. let me know if I am able to do so as I am nor pleased with the results for me and don't really like that there is more sodium. I think the regular endurolytes are a better balance of sodium, potassium and magnesium. Joel Kwiatkowski
Date published: 2014-05-10
Rated 5 out of 5 by from Great product for "ultra" training! I've been using endurolytes for years for all my endurance training- always had tremendous results. My only gripe was that in my long training runs (and races) of 3 hours and longer I averaged 3 endurolyes pills an hour to take care of my electrolytic needs. Not a huge gripe, but hammer read my mind with this product- the same amount of sodium and chloride, still the full range of the "other" electrolytes all in 1 pill. Used them on a long (4.5 hour) run this weekend, and they performed as expected- amazing!
Date published: 2014-03-24
Rated 5 out of 5 by from Economy of usage It is so great that Hammer came up with a more concentrated formula for Endurolites. Now I can fit it into my feeding schedule easier, rather than having to keep track of three pills an hour, 20 minutes goes by fast when one is in the woods, I can take one extreme every hour and fit it within my Sustanined Energy feeding. Now I spend less time fiddling with containers and can keep concentrated on my running plan. Besides I am taking a third of the number of pills with me. Thank you hammer
Date published: 2014-09-08
Rated 5 out of 5 by from My new go-to Electrolyte supplement I've been searching for an electrolyte supplement and this is now my go-to supplement. Been a long time user of Nuun tablets, but was always left with a sugary aftertaste and on longer rides (80+ miles) would experience cramping regardless. I bought this just prior to riding a 105 mile event. The day of the ride it was HOT! Started of the ride at 85* and at the end of the ride it was 107*. Used only Endurolyte Extreme capsules and water for hydration. Never once had any concerns with feeling dehydrated and no signs of cramping. Overall very pleased with this product and will continue to use this along with all the other Hammer supplements and fuels that I've been using for year.
Date published: 2015-09-30
Rated 5 out of 5 by from Excellent supplements and customer service Fantastic company and products. 5 STARS. Last year I suffered heat exhaustion. My doctor, at the time, had no idea what was wrong with me. After $700.00 in lab work, he could only tell me that my potassium was low. So, I surfed the Internet and realized that I had severe heat exhaustion and needed some serious electrolytes. I purchased them, for the first time, from HAMMER and they were fantastic. Fast delivery and a telephone call inquiring how I liked my product.
Date published: 2015-02-26
Rated 5 out of 5 by from Much more effecive than regular Endurolytes I had been using regular Endurolytes with okay results. I purchased the Extreme version about a month ago and am using it to train for an Ironman. I have had two long workouts in very hot and humid conditions now where I've used this product and have had no issues with cramping or feeling bad. It wasn't until I was reading on Facebook and seeing my friend's descriptions on how miserable their workouts were (because of the heat and humidity) that I realized how hot and humid the day was and how much the Extreme Endurorlytes were helping me. GREAT product and definitely worth the extra cost over regular Endurolytes (you also don't have to use as many capsules either to get the desired result).
Date published: 2014-07-17
Rated 5 out of 5 by from TRULY OUTSTANDING Sometimes improvements to products really don't improve the product. Endurolyte Extremes are a definitive improvement on an already great product. I don't have to carry as many with me on a ride and they work great. I use them on hot and cold rides to stave-off depletion of critical nutrients and minerals, as well as minimize that hung-over feeling after riding 200 miles.
Date published: 2014-11-21
Rated 5 out of 5 by from Satisfied with Hammer Endurolytes Extreme I used Enduruolytes Extreme at the Oklahoma City Marathon and although the temperature was in the 70s, due to almost 2 hours of delay in the race, I did not experience any cramps. I've recommended this product to all my running friends.
Date published: 2014-05-01
  • 2015-11-26T06:51CST
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