Skip to content

Drug interactions

Bendroflumethiazide + Cefalexin

Severity: Minor

Bendroflumethiazide 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

Both drugs are organic anions secreted by renal tubular transporters, so cefalexin could modestly reduce thiazide clearance. Any rise in thiazide exposure is expected to be small and of little clinical consequence.

What this interaction means in plain words

Bendroflumethiazide 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.

Evidence level: Low

Why it happens

Possible competition for renal tubular anion secretion (OAT pathways); clinical relevance is unproven.

What to do

No dose change is needed. Check blood pressure and electrolytes as usual during thiazide 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

Pro+ members

Unlock the full page

Create an account and start a Pro+ trial to unlock the full management advice for Bendroflumethiazide and Cefalexin, the additional notes, the evidence detail and the whole-prescription interaction checker.

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription

Try Pro+ free for 7 days on the web. No card needed.

Frequently asked questions

Can I take Bendroflumethiazide with Cefalexin?

MediHelp rates the interaction as minor. Bendroflumethiazide 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. Both drugs are organic anions secreted by renal tubular transporters, so cefalexin could modestly reduce thiazide clearance. Any rise in thiazide exposure is expected to be small and of little clinical consequence.

How serious is the interaction between Bendroflumethiazide 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 dose change is needed. Check blood pressure and electrolytes as usual during thiazide 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.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

Browse A–Z · Drug interactions

Get the app Sign in