Drug interactions
Cyanocobalamin + Ethanol
Severity: Minor
Cyanocobalamin and Ethanol: 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
Chronic heavy alcohol intake can impair absorption of vitamin B12 from the gut and contribute to lower B12 status. This is mainly relevant to long-term heavy drinkers who rely on oral supplementation or dietary B12.
What this interaction means in plain words
Cyanocobalamin and Ethanol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Chronic alcohol causes gastrointestinal mucosal injury and gastritis, reducing B12 absorption.
What to do
In patients with chronic heavy alcohol use, monitor serum B12 or methylmalonic acid and consider parenteral B12 if levels remain low despite oral therapy.
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 Cyanocobalamin
Frequently asked questions
Can I take Cyanocobalamin with Ethanol?
MediHelp rates the interaction as minor. Cyanocobalamin and Ethanol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Chronic heavy alcohol intake can impair absorption of vitamin B12 from the gut and contribute to lower B12 status. This is mainly relevant to long-term heavy drinkers who rely on oral supplementation or dietary B12.
How serious is the interaction between Cyanocobalamin and Ethanol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: In patients with chronic heavy alcohol use, monitor serum B12 or methylmalonic acid and consider parenteral B12 if levels remain low despite oral therapy.
What other medicines interact with Cyanocobalamin?
MediHelp also lists interactions of Cyanocobalamin with, for example, Chloramphenicol, Dichlorphenamide, Metformin. The full list is on the Cyanocobalamin page.
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