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ingestible · for muscle cramps

Electrolyte Rehydration (Sodium + Potassium)

Reviewed by the Nimbera editorial team · Last updated May 2026

A 2015 review supports electrolyte replacement as a practical intervention for exercise-associated muscle cramps, particularly in heat and high-sweat conditions where sodium loss is substantial.$15-$35 per month depending on product and frequency of use

How to use

During prolonged exercise (over 60 minutes) or in hot conditions, drink an electrolyte beverage containing sodium (400-1000 mg per liter) and potassium. Pre-hydrate with 500 ml 2 hours before activity. Post-exercise, replace sweat losses with an electrolyte drink rather than plain water alone.

How it works

Large sweat-induced sodium losses reduce plasma osmolality and shrink the interstitial fluid space around nerves and muscles, lowering the threshold for cramp. Sodium replacement restores fluid distribution and nerve stability.

Where to buy

Sports nutrition stores or pharmacies - LMNT, Nuun, Liquid IV, or oral rehydration salts (ORS) packets

Typical cost: $15-$35 per month depending on product and frequency of use

Safety notes

Plain water over-consumption without electrolytes (hyponatremia) can worsen exercise cramps. Those with hypertension or kidney disease should choose lower-sodium formulas and consult a clinician.

Drug & supplement interactions

  • Always tell your doctor or pharmacist about any supplements you take.
  • Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
  • Herbal remedies can affect how the body absorbs or metabolises drugs.
  • Check drugs.com interactions checker before starting.

Clinical source

PubMed - Minetto et al. 2021

This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.