Supplement × Supplement·timing-sensitive·Emerging evidence
Soluble fiber can reduce or delay mineral supplement absorption when taken at the same time.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Soluble fiber can reduce or delay mineral supplement absorption when taken at the same time.
Mechanism. Fiber matrix can bind or slow contact between minerals and absorptive surfaces.
Recommendation. Separate iron from PHGG by at least 2 hours when treating iron deficiency.
Space the doses apart by at least this window to avoid the conflict.
Effect on the composite score
If both Iron and Partially Hydrolyzed Guar Gum (Sunfiber) are in the same stack, this pair applies −5 to your Stack Score (per scored timing-sensitive row).
The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.
Every claim on this page is cited. PMIDs link straight to PubMed.
Check your full routine
Drop your supplements and prescriptions into NutriStack and it runs every pair at once: every interaction, synergy, timing rule, and contraindication, each linked to its primary source.
NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.
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