NOW Foods Potassium Citrate 99 mg provides the organic citrate form of potassium — well-absorbed, gentle on the stomach, and uniquely beneficial for urinary health due to citrate's alkalizing effect on urine. Potassium citrate has been clinically studied and is widely used in conventional medicine for prevention of kidney stones (calcium oxalate, uric acid types) because it raises urinary pH, increases urinary citrate (which inhibits stone formation), and reduces uric acid crystallization. It also provides all the general electrolyte and cardiovascular benefits of potassium supplementation including support for healthy blood pressure and heart function. Each capsule delivers 99 mg — the regulatory maximum per capsule — allowing flexible daily dosing. Manufactured in NOW's GMP-certified facility.