NutriStack
Iron and Shilajit, a caution.
Shilajit's fulvic acid enhances mineral absorption and shilajit itself supplies some iron, so combining it with an iron supplement can push iron intake higher than intended and is hazardous in people prone to iron overload.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
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At a glance
- Pair type
- Caution
- Evidence (highest tier)
- Emerging
- Source citations
- 2 sources
- Stack Score effect
- −5 to your Stack Score (per scored caution row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Caution · Emerging evidence
Caution
What is happening. Shilajit's fulvic acid enhances mineral absorption and shilajit itself supplies some iron, so combining it with an iron supplement can push iron intake higher than intended and is hazardous in people prone to iron overload.
Mechanism. Shilajit's fulvic and humic acids chelate minerals and improve intestinal iron uptake, and the material itself contributes some bioavailable iron, so adding an iron supplement raises total absorbed iron and the risk of accumulation.
Recommendation. Do not combine shilajit with iron supplements if you have hemochromatosis or known high iron stores. Others should check ferritin before stacking the two and avoid layering high-dose iron on top of regular shilajit use.
Sources (2)
- Wilson E et al., Review of shilajit composition and fulvic acid mineral transport, Journal of Ethnopharmacology, 2011
- Stohs SJ, Safety and efficacy of shilajit (mumie, moomiyo), Phytotherapy Research, 2014. Safety and efficacy of shilajit (mumie, moomiyo). Phytother Res. 2014. PMID 23733436
Stack Score
How this pair moves the number.
Effect on the composite score
If both Iron and Shilajit are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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