Drug interactions
Cephalexin + Chlorthalidone
Severity: Minor
Cephalexin and Chlorthalidone: 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
Cephalexin and chlorthalidone are both renally cleared by tubular secretion, so a small increase in chlorthalidone exposure is theoretically possible. No clinically important effect is established.
What this interaction means in plain words
Cephalexin and Chlorthalidone 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 competition for renal tubular anionic secretion.
What to do
No dose change is needed; monitor blood pressure and electrolytes as usual.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Cephalexin and Chlorthalidone, 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.
Other interactions of Chlorthalidone
Frequently asked questions
Can I take Cephalexin with Chlorthalidone?
MediHelp rates the interaction as minor. Cephalexin and Chlorthalidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cephalexin and chlorthalidone are both renally cleared by tubular secretion, so a small increase in chlorthalidone exposure is theoretically possible. No clinically important effect is established.
How serious is the interaction between Cephalexin and Chlorthalidone?
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; monitor blood pressure and electrolytes as usual.
What other medicines interact with Chlorthalidone?
MediHelp also lists interactions of Chlorthalidone with, for example, Amifostine, Atenolol-chlorthalidone, Candesartan-hydrochlorothiazide. The full list is on the Chlorthalidone 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.
