Drug interactions
Furosemide + Timolol
Severity: Minor
Furosemide and Timolol: 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
Oral timolol and furosemide produce additive blood pressure lowering, and potassium effects are minor and unclear. Furosemide alone can cause hypokalemia.
What this interaction means in plain words
Furosemide and Timolol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Furosemide belongs to Cardiovascular; Timolol belongs to Cardiovascular.
Why it happens
Additive antihypertensive pharmacodynamics; loop diuretic potassium loss.
What to do
Monitor blood pressure, heart rate and serum potassium periodically. Replace potassium if low.
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 Furosemide and Timolol, 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 Furosemide
- Amifostine + Furosemide Major
- Amikacin + Furosemide Major
- Carbenoxolone + Furosemide Major
- Cephaloridine + Furosemide Major
- Cisplatin + Furosemide Major
- Digoxin + Furosemide Major
Other interactions of Timolol
- Acebutolol + Timolol Major
- Aldesleukin + Timolol Major
- Amifostine + Timolol Major
- Amiodarone + Timolol Major
- Arformoterol + Timolol Major
- Atenolol-chlorthalidone + Timolol Major
Frequently asked questions
Can I take Furosemide with Timolol?
MediHelp rates the interaction as minor. Furosemide and Timolol have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Oral timolol and furosemide produce additive blood pressure lowering, and potassium effects are minor and unclear. Furosemide alone can cause hypokalemia.
How serious is the interaction between Furosemide and Timolol?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and serum potassium periodically. Replace potassium if low.
What other medicines interact with Furosemide?
MediHelp also lists interactions of Furosemide with, for example, Amifostine, Amikacin, Carbenoxolone. The full list is on the Furosemide 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.
