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Calcium and Potassium can be taken together. Any benefit from combining them rests on limited evidence. Potassium citrate (1500–3000 mg/day) can be combined with calcium supplementation. A bone-density benefit has not been shown. Particularly recommended for individuals with high-protein diets, recurrent kidney stones, or hypertension.
Potassium citrate lowered bone-turnover markers in women with osteopenia, in one pilot trial on a calcium and vitamin D background, but a 1-year trial found no change in spine or hip bone density.
Dietary potassium reduces urinary calcium excretion by neutralizing endogenous acid load (via potassium bicarbonate/citrate), which otherwise drives calcium release from bone as a buffering mechanism. Potassium citrate supplementation has been shown to reduce urinary calcium by up to 30%, improving net calcium retention. Additionally, both minerals jointly regulate vascular smooth muscle function and blood pressure.
What to do: Potassium citrate (1500–3000 mg/day) can be combined with calcium supplementation. A bone-density benefit has not been shown. Particularly recommended for individuals with high-protein diets, recurrent kidney stones, or hypertension.
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.