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# Fulvic Acid Bioavailability: What the Research Shows
Fulvic acid, the primary bioactive compound in Shilajit, has garnered significant attention in nutritional science for its remarkable ability to enhance nutrient absorption.
## Bioavailability Enhancement
Fulvic acid increased iron absorption by 43% and zinc absorption by 37% compared to standard mineral supplements.
## Molecular Size Matters
The molecular weight of fulvic acid (1,000-10,000 Daltons) is optimal for biological activity, allowing it to cross the blood-brain barrier and enter cells easily.
Fulvic AcidBioavailabilityAbsorptionResearch