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By Dr Ananya Mandal, MD. Electrolytes are essential substances in the body required for cell function and cell signalling. In the human body, the main electrolytes are: 1  Sodium (Na+). 2  Potassium (K+). 3  Calcium (Ca2+). 4  Magnesium (Mg2+). 5  Chloride (Clâ). 6  Hydrogen phosphate (HPO42â). 7  Hydrogen carbonate (HCO3â).
Best Electrolyte Replacement. Caplytes are electrolyte supplements designed professionally to replenish electrolytes that are lost in sweat. In addition to being essential in correcting electrolyte imbalance and maintaining hydration, electrolytes play a significant role in muscle function and metabolism.