Can You Take Vitamin B12 and Vitamin D Together?
No documented interaction was identified between vitamin B12 and vitamin D in the sources reviewed.
See the full Vitamin B12 page and Vitamin D page for other reviewed interactions and reference information.
What the interaction means
The NIH ODS vitamin B12 fact sheet's interactions section names only gastric acid inhibitors and metformin -- vitamin D is not named. MedlinePlus's vitamin D page does not mention vitamin B12.
No documented interaction between Vitamin B12 and Vitamin D 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, in both directions.
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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