Moderate evidencemineral
Potassium for Muscle Cramps
Potassium is critical for maintaining the resting membrane potential of muscle cells. Hypokalemia causes depolarization of the cell membrane, increasing excitability and spontaneous contractions leading to cramping.
How strong is the research?
Moderate evidence
Based on cohort study data — strong observational evidence.
How much to take
99–200 mg
Supplement doses are limited to 99mg per capsule (FDA). Increase dietary intake (bananas, potatoes, coconut water) alongside supplementation.