Home Ingredients Potassium Gluconate
CardiovascularMuscle & RecoveryMetabolic Health

Potassium Gluconate

Evidence Level
Limited
2 Clinical Trials
5 Documented Benefits
2/5 Evidence Score

Potassium gluconate is the dominant over-the-counter potassium form in the United States, where label limits cap most single tablets at 99 mg (about 2.53 mEq) of elemental potassium. It pairs potassium with gluconate, an organic anion that is well tolerated by the stomach, and is marketed broadly for general potassium support, muscle cramps, and low-carbohydrate or ketogenic diets that increase potassium losses. Chemically it provides roughly 16.7% elemental potassium. As a commodity supplement, it has little form-specific clinical literature beyond serving as a potassium source, and it carries the same hyperkalemia cautions as all potassium salts.

Studied Dose OTC tablets typically 99 mg (2.53 mEq) elemental potassium each; adult intake ~2,600-3,400 mg/day from all sources.
Active Compound Potassium gluconate (C6H11KO7), an organic potassium salt providing ~16.7% elemental potassium; OTC tablets supply ~99 mg (2.53 mEq) potassium.

Benefits

Convenient Potassium Source

Potassium gluconate provides supplemental potassium in a widely available over-the-counter form, helping support adequate intake of an essential mineral that many people consume below recommended levels from diet alone.

Supported by Trial 1, Trial 2

Supports Muscle Function

Potassium is required for normal muscle contraction and nerve signaling, so maintaining adequate potassium status may help support normal neuromuscular function and reduce cramping associated with low potassium intake.

Supported by Trial 2, Trial 1

Helps Maintain Electrolyte Balance

As the major intracellular cation, potassium works alongside sodium to maintain fluid balance and is often used by people following low-carbohydrate or ketogenic diets, which can increase urinary potassium losses.

Supported by Trial 1, Trial 2

Gentle Organic Salt

The gluconate anion is generally well tolerated in the gastrointestinal tract, which is one reason this organic potassium salt is a popular choice for everyday supplemental use.

Supported by Trial 1, Trial 2

Supports Healthy Blood Pressure

Adequate potassium intake relative to sodium is associated with healthier blood pressure, and potassium gluconate contributes to total potassium intake as part of an overall balanced diet.

Supported by Trial 2, Trial 1

Mechanism of action

1

Intracellular Cation Role

Potassium is the principal positively charged ion inside cells, establishing the resting membrane potential needed for normal electrical activity of nerve, skeletal muscle, and cardiac tissue.

2

Sodium-Potassium Balance

Potassium counterbalances sodium in regulating extracellular fluid volume and vascular tone, the basis for the association between higher potassium intake and healthier blood pressure.

3

Gluconate As Carrier

Once dissociated, the gluconate anion is metabolized while potassium enters the body's potassium pool; the salt functions essentially as a potassium delivery vehicle with good gastric tolerance.

4

Renal Excretion Limit

Healthy kidneys excrete excess potassium efficiently, but impaired renal function reduces this safeguard, allowing supplemental potassium to accumulate and raise serum levels.

Clinical trials

1
Potassium supplementation and blood pressure

Meta-analysis of 23 randomized controlled trials of oral potassium supplementation versus control, evaluating potassium as a general supplemental cation

1,213 participants with essential hypertension

Oral potassium supplementation produced modest but statistically significant reductions in systolic and diastolic blood pressure, supporting the general value of increasing potassium intake, of which potassium gluconate is one common OTC source.

2
Potassium intake and blood pressure meta-analysis

Meta-analysis of 15 randomized controlled trials assessing potassium intake and the sodium-to-potassium ratio

917 participants not on antihypertensive medication

Greater potassium intake was associated with lower systolic and diastolic blood pressure, with larger effects in hypertensive participants; these data reflect potassium as a nutrient rather than any property unique to the gluconate salt.

Side effects and drug interactions

Common Potential side effects

Mild gastrointestinal upset, nausea, or diarrhea can occur, though gluconate is relatively well tolerated.
Excess potassium intake can cause hyperkalemia, with risk of heart rhythm disturbances.
People with kidney impairment are prone to potassium accumulation and should be cautious.
Single OTC tablets are limited to 99 mg potassium, so high total intake requires many tablets.
Symptoms of high potassium include weakness, tingling, and irregular heartbeat needing prompt assessment.

Important Drug interactions

ACE inhibitors raise serum potassium, and combining them with potassium supplements increases hyperkalemia risk.
Angiotensin receptor blockers (ARBs) similarly elevate potassium and require caution with supplementation.
Potassium-sparing diuretics such as spironolactone or amiloride can cause dangerous hyperkalemia with added potassium.
People with chronic kidney disease should avoid potassium supplements unless supervised, due to hyperkalemia risk.

More Cardiovascular Ingredients

Cardiovascular
Niacin
Niacin (vitamin B3) is an essential water-soluble vitamin central to energy metabolism, DN…
Cardiovascular
Omega-3 Fatty Acids
Omega-3 fatty acids, primarily eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), an…
Cardiovascular
Potassium
Potassium is the most abundant intracellular cation in the human body and an essential min…
Cardiovascular
Phytosterols (Plant Sterols & Stanols)
Phytosterols (plant sterols and stanols) are plant-derived compounds structurally similar…

Explore Other Ingredients

Muscle & Recovery
Strengthera™
Strengthera™ Muscle Maintenance+Vitality is PLT Health Solutions' botanical blend of Sphae…
Muscle & Recovery
L-Glutamine
L-glutamine is the most abundant amino acid in the body and the primary metabolic fuel for…
Athletic Performance
L-Carnitine
L-Carnitine is a naturally-occurring amino acid derivative essential for fatty acid metabo…

Frequently asked questions about Potassium Gluconate

What is potassium gluconate?

Potassium gluconate is potassium bound to gluconic acid, a common, gentle, well-tolerated form used in supplements to supply small amounts of potassium with less stomach irritation than potassium chloride.

What is potassium gluconate used for?

It provides potassium for electrolyte balance, fluid balance, nerve and muscle function, and healthy blood pressure. It is a popular over-the-counter form because it is gentle on the stomach.

How much potassium gluconate should I take?

Like all over-the-counter potassium, it is capped at 99 mg per serving. The bulk of your potassium should come from fruits and vegetables; higher doses require a prescription and monitoring.

Is potassium gluconate safe?

In the small amounts available over the counter it is generally well tolerated. People with kidney disease or on potassium-raising medications should not supplement without medical guidance, due to the risk of high potassium.

What is the recommended dosage of Potassium Gluconate?

The clinically studied dose is OTC tablets typically 99 mg (2.53 mEq) elemental potassium each; adult intake ~2,600-3,400 mg/day from all sources. Always follow the product label and check with a healthcare provider for personal advice.

Is Potassium Gluconate safe, and does it have side effects?

For most healthy adults, Potassium Gluconate is well tolerated at studied doses. Reported effects can include: Mild gastrointestinal upset, nausea, or diarrhea can occur, though gluconate is relatively well tolerated. Excess potassium intake can cause hyperkalemia, with risk of heart rhythm disturbances. It may also interact with some medications. Potassium Gluconate is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Potassium Gluconate interact with any medications?

Possible interactions include: ACE inhibitors raise serum potassium, and combining them with potassium supplements increases hyperkalemia risk. Angiotensin receptor blockers (ARBs) similarly elevate potassium and require caution with supplementation. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Potassium Gluconate?

NutraSmarts rates the evidence for Potassium Gluconate as Limited (2 out of 5). It is backed by 2 clinical trials and 2 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(2 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Poorolajal J, Zeraati F, Soltanian AR, Sheikh V, Hooshmand E, Maleki A Oral potassium supplementation for management of essential hypertension: A meta-analysis of randomized controlled trials PLoS One. 2017;PLoS One. 2017 Apr 18;12(4):e0174967.PubMedUsed to support: Meta-analysis of 23 RCTs showing oral potassium supplementation modestly lowered blood pressure; cited as general potassium-source evidence since potassium gluconate has little form-specific literature beyond serving as a potassium source.
  2. Binia A, Jaeger J, Hu Y, Singh A, Zimmermann D Daily potassium intake and sodium-to-potassium ratio in the reduction of blood pressure: a meta-analysis of randomized controlled trials Journal of Hypertension. 2015;J Hypertens. 2015 Aug;33(8):1509-20.PubMedUsed to support: Meta-analysis of 15 RCTs showing higher potassium intake reduced blood pressure; reflects potassium as a nutrient rather than any benefit specific to the gluconate salt, which is a commodity OTC potassium form.