Potassium Bicarbonate

Potassium Bicarbonate is a unrated form of Potassium, used in 365 on-market products and providing 39.1% elemental potassium by weight.

Basis: KHCO3, anhydrous (no commercial hydrate)

Why this tier: Alkaline potassium salt used in bone-health trials (KHCO3 60-120 mmol/day; Sebastian 1994), but there are no head-to-head absorption data. In Dawson-Hughes 2009 the effects on urinary calcium and bone resorption were attributed to bicarbonate, not potassium, so bone-marker effects do not demonstrate potassium bioavailability.

Source: Sebastian A et al. 1994, N Engl J Med 330(25):1776-81, PMID 8190153; Dawson-Hughes B et al. 2009, J Clin Endocrinol Metab 94(1):96-102, PMID 18940881

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