Drug interactions
Metolazone + Minoxidil
Severity: Moderate
Metolazone and Minoxidil: moderate 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 lower blood pressure, and metolazone is commonly paired with minoxidil to counter its fluid retention. Combined use can cause excessive hypotension and electrolyte or volume depletion.
What this interaction means in plain words
Metolazone and Minoxidil can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Metolazone belongs to Cardiovascular; Minoxidil belongs to Cardiovascular.
Why it happens
Additive antihypertensive effects: arteriolar vasodilation from minoxidil plus diuresis and volume reduction from metolazone.
What to do
Monitor blood pressure, weight, volume status, and electrolytes including potassium and sodium. Adjust doses to the response.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Metolazone
Other interactions of Minoxidil
Frequently asked questions
Can I take Metolazone with Minoxidil?
MediHelp rates the interaction as moderate. Metolazone and Minoxidil can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both drugs lower blood pressure, and metolazone is commonly paired with minoxidil to counter its fluid retention. Combined use can cause excessive hypotension and electrolyte or volume depletion.
How serious is the interaction between Metolazone and Minoxidil?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, weight, volume status, and electrolytes including potassium and sodium. Adjust doses to the response.
What other medicines interact with Metolazone?
MediHelp also lists interactions of Metolazone with, for example, Amifostine, Amlodipine-hydrochlorothiazide-valsartan, Amlodipine-olmesartan-hydrochlorothiazide. The full list is on the Metolazone page.
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