Drug interactions
Cyanocobalamin + Valproic acid
Severity: Minor
Cyanocobalamin and Valproic acid: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Valproate has been associated with lower vitamin B12 levels in some patients on long-term therapy. The clinical significance is uncertain and usually small. Cyanocobalamin supplementation does not impair valproate effect.
What this interaction means in plain words
Cyanocobalamin and Valproic acid have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Cyanocobalamin belongs to Miscellaneous; Valproic acid belongs to Central Nervous System.
Why it happens
The mechanism of reduced B12 levels with valproate is not established.
What to do
No routine change is needed. Check vitamin B12 if anemia, neuropathy or cognitive symptoms appear during long-term treatment.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Valproic acid
- Ertapenem + Valproic acid Contraindicated
- Imipenem / cilastatin / relebactam + Valproic acid Contraindicated
- Imipenem / cilastatin + Valproic acid Contraindicated
- Meropenem / vaborbactam + Valproic acid Contraindicated
- Meropenem + Valproic acid Contraindicated
- Calcium / magnesium / potassium / sodium oxybates + Valproic acid Major
Other interactions of Cyanocobalamin
Frequently asked questions
Can I take Cyanocobalamin with Valproic acid?
MediHelp rates the interaction as minor. Cyanocobalamin and Valproic acid have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Valproate has been associated with lower vitamin B12 levels in some patients on long-term therapy. The clinical significance is uncertain and usually small. Cyanocobalamin supplementation does not impair valproate effect.
How serious is the interaction between Cyanocobalamin and Valproic acid?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed. Check vitamin B12 if anemia, neuropathy or cognitive symptoms appear during long-term treatment.
What other medicines interact with Valproic acid?
MediHelp also lists interactions of Valproic acid with, for example, Ertapenem, Imipenem / cilastatin / relebactam, Imipenem / cilastatin. The full list is on the Valproic acid page.
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