Can You Take Omeprazole and Vitamin K Together?
No documented interaction was identified between omeprazole and vitamin K in the sources reviewed.
What the interaction means
Omeprazole's FDA label's only 'vitamin K' hit is 'VITAMIN K ANTAGONIST' inside its generic pharmacologic-class taxonomy dropdown, not a prose interaction statement. MedlinePlus's vitamin K page does not mention omeprazole.
No documented interaction was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.
Practical context
Both substances' own current authoritative sources were checked directly, full text, in both directions; the taxonomy-list mention was deliberately not treated as a real interaction claim.
What the sources say
Last reviewed 2026-08-23
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.
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