Skip to main content

Mineral

Potassium (as Potassium Chloride)

Also known as: Potassium Chloride, KCl, Potassium, K+

A
Evidence

Potassium is an essential electrolyte mineral critical for heart rhythm, muscle contraction, and blood pressure regulation. Strong clinical evidence supports potassium supplementation for maintaining normal cardiovascular and neuromuscular function, particularly in populations with deficiency or high sodium intake.

Primary uses

  • Electrolyte balance
  • Blood pressure support
  • Cardiovascular health
  • Muscle function
  • Nerve transmission

How it works

  • Maintains intracellular osmotic pressure and fluid balance
  • Regulates cardiac action potentials and heart rhythm
  • Supports muscle contraction and relaxation
  • Modulates vascular tone and blood pressure
  • Enables sodium-potassium pump function

Dosage

Typical range
1500-4700 mg daily (Adequate Intake: 2600 mg for women, 3400 mg for men)
Timing
With meals or water; divided doses preferred
With food
Recommended to minimize GI distress
Duration
Long-term daily use appropriate for maintenance; therapeutic dosing should follow clinical guidance
Special populations
Individuals with kidney disease, diabetes, or taking ACE inhibitors/potassium-sparing diuretics require medical supervision. Supplementation contraindicated in hyperkalemia.

Forms

  • Powder· 70/100
  • Capsule· 70/100
  • Tablet· 70/100

Safety

Common side effects

  • Nausea and vomiting (especially on empty stomach)
  • Abdominal discomfort
  • Diarrhea
  • Heartburn

Contraindications

  • Chronic kidney disease (increased hyperkalemia risk)
  • Taking potassium-sparing diuretics without medical supervision
  • ACE inhibitor or ARB use (without physician approval)
  • Hyperkalemia or elevated serum potassium levels
  • Certain heart arrhythmias

Evidence notes

Potassium is a well-established essential nutrient with extensive RCT evidence supporting cardiovascular and blood pressure benefits. Deficiency correction is well-documented in clinical literature.

Grade A: Multiple well-designed human trials support the main claims.

Related in Mineral

Check a full stack

Formulate's free interaction checker lets you paste in any combination of supplements and medications at once — every pairing flags severity, timing, and cited evidence.

Open the checker

Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider.