Potassium Bicarbonate

Potassium Bicarbonate is a tier 1 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: Used at doses shown to reduce urinary calcium excretion and bone-resorption markers in older adults, implying good systemic delivery (not a head-to-head absorption comparison).

Source: Sebastian A et al., PMID 18940881

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