With warfarin
Vitamin K in some multivitamins can reduce warfarin's anticoagulant response.
Interaction evidence sourceVitamins / minerals
Prepared by the ezGLP team. Sources last checked .
Also known as Adult multivitamin, MVM
Routes represented in the knowledgebase: Oral.
Dietary supplement with no standard required composition; duplicate intake can exceed safe limits for some nutrients.
No validated PubMed or DOI link is currently curated for this entry.
Common or reported: ingredient-dependent GI effects.
Serious or important: excess vitamin A, iron, zinc, or niacin exposure from duplicate products.
Composition is not standardized; constituent ingredients determine the actual profile.
Safety evidence sourceThese are general, pairwise evidence notes. Green identifies the potential-synergy category, while Lv3/Lv2/Lv1 communicates evidence strength; it does not guarantee benefit or cancel a safety warning.
Vitamin K in some multivitamins can reduce warfarin's anticoagulant response.
Interaction evidence sourceSummarised from published literature for reference only, with citations to the source. Evidence is graded as reported and is not a recommendation to combine, dose, or use any compound.
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