Drug interactions
Biotin + Cefalexin
Severity: Minor
Biotin and Cefalexin: 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 biotin-producing gut bacteria, but dietary intake and supplements provide most biotin. A clinically meaningful deficiency from short cefalexin courses is not expected.
What this interaction means in plain words
Biotin and Cefalexin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Biotin belongs to Gastrointestinal Tract; Cefalexin belongs to Anti Bacterial.
Why it happens
Theoretical reduction of intestinal bacterial biotin synthesis.
What to do
No action is needed for short courses. Ensure adequate dietary biotin during 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
Other interactions of Biotin
Frequently asked questions
Can I take Biotin with Cefalexin?
MediHelp rates the interaction as minor. Biotin and Cefalexin 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 biotin-producing gut bacteria, but dietary intake and supplements provide most biotin. A clinically meaningful deficiency from short cefalexin courses is not expected.
How serious is the interaction between Biotin and Cefalexin?
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 for short courses. Ensure adequate dietary biotin during 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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