Mineral
Potassium Citrate
Also known as: Potassium, K citrate
Essential electrolyte for heart, muscle, and fluid balance. Citrate form may help prevent kidney stones.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Potassium Citrate product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | NutraBio Whey Protein Isolate Powder | 96 A | $2.50 |
| 2 | BulkSupplements Glucosamine Sulfate Capsules | 95 A | $0.05 |
| 3 | Transparent Labs BULK Pre-Workout | 90 A | $1.67 |
| 4 | Thorne Heart Health Complex | 89 A | $1.43 |
| 5 | Onnit Grass Fed Whey Isolate Protein - Vanilla (30 Serving Tub) | 89 A | $2.00 |
| 6 | Thorne Joint Support Nutrients | 87 A | $1.00 |
| 7 | Thorne MediClear-SGS™ - Vanilla | 86 A- | $2.10 |
| 8 | Pure Encapsulations Potassium Magnesium (aspartate) | 86 A- | $0.20 |
| 9 | Nutricost Potassium + Magnesium Citrate Capsules | 86 A- | $0.13 |
| 10 | Thorne Catalyte® | 85 A- | $1.13 |
| 11 | Jarrow Formulas Ultra BoneUp | 85 A- | $0.41 |
| 12 | Jarrow Formulas BoneUp | 85 A- | $0.57 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Potassium Citrate should I take?
The typical range is 99 mg per serving (OTC limit). Safe long-term
When should I take Potassium Citrate?
With meals. Yes.
Which form of Potassium Citrate is best?
Potassium citrate — Alkalinizing. Other forms in the catalog: Potassium chloride.
Is Potassium Citrate safe?
Commonly reported: GI upset. Serious warnings: Hyperkalemia risk, Heart rhythm effects. Dangerous in kidney disease
Which Potassium Citrate supplement scores highest?
NutraBio Whey Protein Isolate Powder, at 96/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Daily target & upper limit
4700 mg / dayPotassium Citrate has an established daily reference intake. See best forms, label synonyms, upper-limit warnings, and top-scoring supplements:
Potassium Citrate dosage reference →Primary uses
- Heart function
- Muscle function
- Blood pressure
- Kidney stone prevention
How it works
- Essential for cell membrane potential
- Heart rhythm regulation
- Balances sodium
Dosage
- Typical range
- 99 mg per serving (OTC limit)
- Timing
- With meals
- With food
- Yes
- Duration
- Safe long-term
- Special populations
- Kidney disease consult doctor
Forms
- Potassium citrate
- Potassium chloride
Safety
Common side effects
- GI upset
Contraindications
- Kidney disease
- K-sparing diuretics
Products containing Potassium Citrate
Top-scoring supplements in our catalog that list Potassium Citrate on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Known interactions
Evidence notes
Essential electrolyte
Grade A: Multiple well-designed human trials support the main claims.
Related in Mineral
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.