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Electrolytes

Also known as: sodium, potassium, magnesium, calcium, phosphate, bicarbonate, chloride, mineral salts

Evidence under review. — Not yet rated

Essential minerals that regulate hydration, nerve function, and muscle contraction. Critical for recovery after heavy exercise.

  • What it does

    Electrolytes are charged minerals — including sodium, potassium, magnesium, calcium, and phosphate — that your body needs to maintain fluid balance, fire nerve signals, and contract muscles. One...

  • Evidence quality

    Evidence base hasn't been formally rated yet. See research below.

  • Clinical dose

    No established dose from provided studies

What the Science Says

Electrolytes are charged minerals — including sodium, potassium, magnesium, calcium, and phosphate — that your body needs to maintain fluid balance, fire nerve signals, and contract muscles. One clinical trial found that carbohydrate-electrolyte solutions restored body mass and improved hydration better than plain water after intense exercise in full protective gear. In critically ill patients, electrolyte deficiencies are extremely common and require supplementation, though hospital practices vary widely.

What It Doesn't Do

Plain water rehydrates just as well for light activity — electrolyte drinks aren't magic for casual exercisers. No evidence from these studies that electrolyte supplements boost athletic performance beyond replacing what you lose. Adding menthol to electrolyte drinks doesn't improve rehydration. Electrolyte supplements are not a treatment for kidney disease, heart arrhythmias, or any medical condition.

Evidence-Based Benefits

Carbohydrate-electrolyte drinks restore body mass and hydration better than plain water after intense exercise.

Moderate Evidence

Effective at: No established dose from provided studies

Supporting studies (click to view on PubMed):

Electrolyte deficiencies are extremely common in critically ill patients and frequently require supplementation.

Moderate Evidence

Effective at: No established dose from provided studies

Supporting studies (click to view on PubMed):

Electrolyte levels — especially calcium — must be actively managed during leukocytapheresis to prevent serious complications.

Moderate Evidence

Effective at: No established dose from provided studies

Supporting studies (click to view on PubMed):

Absorption & Bioavailability

Good — electrolytes in solution are rapidly absorbed through the gut; however, absorption varies by electrolyte type, formulation, and individual health status

Red Flags to Watch For

  • People with kidney disease must not self-supplement electrolytes without medical supervision — dangerous imbalances can occur
  • Electrolyte shifts from certain products (e.g., sodium phosphate bowel preps) can cause measurable changes in blood calcium, potassium, and sodium even in healthy adults
  • Hospital-level variation in electrolyte supplementation practices suggests no universal consensus on optimal dosing even in clinical settings
  • Symptoms of electrolyte imbalance range from mild tingling to life-threatening cardiac arrhythmias — do not ignore warning signs

Products Containing Electrolytes

See how Electrolytes is used in these analyzed products:

Frequently Asked Questions

What does Electrolytes do?

Essential minerals that regulate hydration, nerve function, and muscle contraction. Critical for recovery after heavy exercise.

What is the effective dose of Electrolytes?

No established dose from provided studies

Is Electrolytes safe?

People with kidney disease must not self-supplement electrolytes without medical supervision — dangerous imbalances can occur

What doesn't Electrolytes do?

Plain water rehydrates just as well for light activity — electrolyte drinks aren't magic for casual exercisers.

Research Sources

  • PubMed
  • NIH DSLD

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-07-06