Potassium

The provided studies do not show potassium supplements alone lowering blood pressure — the one clinical trial tested it only in combination with olive leaf extract. No evidence from these papers that potassium supplements boost athletic performance, build muscle, or prevent kidney disease. Don't expect dramatic results from a low-dose supplement if your diet is already adequate in potassium.

• Too much potassium (hyperkalemia) can cause dangerous heart rhythm problems — a veterinary review in the provided papers highlights how even small extracellular shifts can alter cardiac conduction
• People with kidney disease, heart failure, or those taking ACE inhibitors, ARBs, or potassium-sparing diuretics should not supplement without medical supervision
• The blood pressure benefit found in the provided study was for a combination product (olive leaf extract + potassium), not potassium alone — single-ingredient claims may be misleading
• Over-the-counter supplements are typically capped at 99 mg per dose in the US — far below the 300 mg used in the clinical trial