Drug interactions
Cefalexin + Pyridoxine
Severity: Minor
Cefalexin and Pyridoxine: 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
Antibiotics may reduce intestinal bacteria that produce small amounts of B vitamins. Dietary intake is the main source of pyridoxine, so clinical deficiency from this is very unlikely.
What this interaction means in plain words
Cefalexin and Pyridoxine 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
Theoretical reduction of vitamin-synthesizing intestinal flora; not established as clinically significant.
What to do
No action is needed unless the patient is malnourished or on prolonged antibiotic 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 Cefalexin
- Amikacin + Cefalexin Moderate
- Avelumab + Cefalexin Moderate
- Balstilimab + Cefalexin Moderate
- Bcg vaccine live + Cefalexin Moderate
- Cefalexin + Cholera vaccine Moderate
- Cefalexin + Kanamycin Moderate
Frequently asked questions
Can I take Cefalexin with Pyridoxine?
MediHelp rates the interaction as minor. Cefalexin and Pyridoxine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antibiotics may reduce intestinal bacteria that produce small amounts of B vitamins. Dietary intake is the main source of pyridoxine, so clinical deficiency from this is very unlikely.
How serious is the interaction between Cefalexin and Pyridoxine?
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 action is needed unless the patient is malnourished or on prolonged antibiotic therapy.
What other medicines interact with Cefalexin?
MediHelp also lists interactions of Cefalexin with, for example, Amikacin, Avelumab, Balstilimab. The full list is on the Cefalexin page.
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