Supplement × Prescription·timing-sensitive·Strong evidence
Iron can reduce oral Cefdinir absorption when taken together.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
What is happening. Iron can reduce oral Cefdinir absorption when taken together.
Mechanism. Polyvalent cations can form poorly absorbed complexes in the gut or otherwise reduce oral antibiotic bioavailability.
Recommendation. Take cefdinir at least 2 hours before or after iron supplements; iron-fortified infant formula is handled separately by pediatric labeling.
Effect on the composite score
If both Cefdinir and Iron 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.
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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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