Mineral
Potassium (as Potassium Gluconate)
Also known as: Potassium Gluconate, Potassium, K+, Gluconic acid potassium salt
Potassium is an essential electrolyte critical for cardiac function, muscle contraction, and fluid balance. Potassium gluconate is an organic salt form commonly used in supplements for bioavailability and gastrointestinal tolerance.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Potassium (as Potassium Gluconate) 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 (as Potassium Gluconate) should I take?
The typical range is 2,600–3,400 mg daily (65–85 mmol/day). Long-term supplementation is appropriate for individuals with inadequate dietary intake; compliance should be monitored
When should I take Potassium (as Potassium Gluconate)?
With meals; split doses if taking higher amounts. Recommended to reduce gastrointestinal irritation and enhance absorption.
Which form of Potassium (as Potassium Gluconate) is best?
Powder. Other forms in the catalog: Tablet, Capsule, Liquid.
Is Potassium (as Potassium Gluconate) safe?
Commonly reported: Gastrointestinal upset (nausea, vomiting, abdominal discomfort), Metallic taste, Diarrhea at high doses.
Which Potassium (as Potassium Gluconate) 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 (as Potassium Gluconate) has an established daily reference intake. See best forms, label synonyms, upper-limit warnings, and top-scoring supplements:
Potassium (as Potassium Gluconate) dosage reference →Primary uses
- Electrolyte balance
- Blood pressure support
- Muscle function
- Cardiovascular health
- Prevention of hypokalemia
How it works
- Maintains cellular membrane potential
- Regulates muscle and cardiac contractility
- Modulates sodium-potassium pump (Na+/K+-ATPase)
- Supports vascular smooth muscle function
Dosage
- Typical range
- 2,600–3,400 mg daily (65–85 mmol/day)
- Timing
- With meals; split doses if taking higher amounts
- With food
- Recommended to reduce gastrointestinal irritation and enhance absorption
- Duration
- Long-term supplementation is appropriate for individuals with inadequate dietary intake; compliance should be monitored
- Special populations
- Pregnant/nursing women: 2,600–2,900 mg daily; do not exceed recommended intake without medical supervision. Individuals with kidney disease, ACE inhibitor use, or potassium-sparing diuretics require medical monitoring.
Forms
- Powder· 70/100
- Tablet· 70/100
- Capsule· 70/100
- Liquid· 70/100
Safety
Common side effects
- Gastrointestinal upset (nausea, vomiting, abdominal discomfort)
- Metallic taste
- Diarrhea at high doses
Contraindications
- Hyperkalemia (elevated serum potassium)
- Kidney disease or impaired renal function
- Concurrent use of ACE inhibitors or potassium-sparing diuretics without medical oversight
- Addison's disease
- Severe dehydration
Products containing Potassium (as Potassium Gluconate)
Top-scoring supplements in our catalog that list Potassium (as Potassium Gluconate) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Potassium is an essential mineral with extensive clinical evidence supporting its role in cardiovascular health, blood pressure regulation, and electrolyte homeostasis. Well-established RCT evidence from decades of research.
Grade A: Multiple well-designed human trials support the main claims.
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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.