Drug interactions
Aspirin / citric acid / sodium bicarbonate + Vitamin B12
Severity: Minor
Aspirin / citric acid / sodium bicarbonate and Vitamin B12: 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
Effervescent aspirin products given long term at high doses may marginally reduce B12 absorption, but the effect is small and not well documented.
What this interaction means in plain words
Aspirin / citric acid / sodium bicarbonate and Vitamin B12 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
Possible gastric mucosal effects altering absorption; not firmly established.
What to do
No routine action is needed. Check B12 status if the patient has deficiency symptoms or other risk factors.
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 Vitamin B12
- Chloramphenicol + Vitamin B12 Moderate
- Dichlorphenamide + Vitamin B12 Moderate
- Metformin + Vitamin B12 Moderate
- Neomycin po + Vitamin B12 Moderate
- Aspirin + Vitamin B12 Minor
- Bazedoxifene / conjugated estrogens + Vitamin B12 Minor
Frequently asked questions
Can I take Aspirin / citric acid / sodium bicarbonate with Vitamin B12?
MediHelp rates the interaction as minor. Aspirin / citric acid / sodium bicarbonate and Vitamin B12 have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Effervescent aspirin products given long term at high doses may marginally reduce B12 absorption, but the effect is small and not well documented.
How serious is the interaction between Aspirin / citric acid / sodium bicarbonate and Vitamin B12?
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 action is needed. Check B12 status if the patient has deficiency symptoms or other risk factors.
What other medicines interact with Vitamin B12?
MediHelp also lists interactions of Vitamin B12 with, for example, Chloramphenicol, Dichlorphenamide, Metformin. The full list is on the Vitamin B12 page.
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