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Top rated potassium mineral supplements

AI-generated summary · updated August 7, 2026 · verify details before purchase.

  1. NOW Foods Potassium Citrate 99 mg, 180 Capsules
    Best overall NOW Foods

    NOW Foods Potassium Citrate 99 mg, 180 Capsules

    4.6/5 $9.17

    High-quality potassium citrate from a trusted brand; supports electrolyte balance and kidney health.

    • Trusted brand
    • Good value
    • Easy to swallow capsules
    • May cause stomach upset in some
  2. Doctor's Best Potassium Gluconate 99 mg, 200 Capsules
    Best value Dr Clark Store

    Doctor's Best Potassium Gluconate 99 mg, 200 Capsules

    4.5/5 $17.49

    Affordable option with high potency; supports heart and muscle function.

    • High potency
    • Affordable
    • Gluten-free
    • Large capsules
  3. Klaire Labs Potassium Bicarbonate-Plus, 90 Capsules
    Best for sensitive stomachs P Puregen Labs

    Klaire Labs Potassium Bicarbonate-Plus, 90 Capsules

    4.4/5 $24.95

    Gentle form with bicarbonate; ideal for those with digestive sensitivity.

    • Gentle on stomach
    • Hypoallergenic
    • Well absorbed
    • Higher price
    • Fewer capsules
  4. Solgar Potassium Gluconate 99 mg, 250 Tablets
    Best for high potency NOW Foods

    Solgar Potassium Gluconate 99 mg, 250 Tablets

    4.7/5 $13.46

    Popular choice with high customer ratings; supports cardiovascular and muscle health.

    • High potency
    • Well-known brand
    • Good reviews
    • Tablets may be large
  5. Thorne Research Potassium Citrate 99 mg, 90 Capsules
    Best premium option THORNE

    Thorne Research Potassium Citrate 99 mg, 90 Capsules

    4.3/5 $17.00

    High-quality, pure formulation; recommended for those wanting a trusted, pure supplement.

    • High quality
    • Pure ingredients
    • Trusted brand
    • Expensive
    • Fewer capsules
  6. Life Extension Potassium Citrate 99 mg, 60 Capsules
    Best for budget Life Extension

    Life Extension Potassium Citrate 99 mg, 60 Capsules

    4.5/5 $11.25

    Reliable brand offering good potency at a reasonable price; supports healthy blood pressure.

    • Good value
    • Reliable brand
    • Capsule form
    • Small bottle size

Buying advice

When choosing a potassium supplement, consider the form (e.g., gluconate, citrate, bicarbonate) based on tolerability and absorption. Check potency (typically 99 mg) and serving size. Look for third-party testing and avoid products with unnecessary additives. Consult a healthcare provider before starting supplementation, especially if you have kidney issues or take medications.

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