Drug interactions
Cefalexin + Salicylates
Severity: Minor
Cefalexin and Salicylates: 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
Non-aspirin salicylates and cefalexin share renal tubular secretion pathways, so each may slightly reduce the other's clearance. The effect is small at usual doses.
What this interaction means in plain words
Cefalexin and Salicylates 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
Competition for renal tubular anion secretion between acidic drugs.
What to do
No routine change is needed. Watch for salicylate toxicity signs with high doses or renal impairment.
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 Salicylates?
MediHelp rates the interaction as minor. Cefalexin and Salicylates have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Non-aspirin salicylates and cefalexin share renal tubular secretion pathways, so each may slightly reduce the other's clearance. The effect is small at usual doses.
How serious is the interaction between Cefalexin and Salicylates?
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. Watch for salicylate toxicity signs with high doses or renal impairment.
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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