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Drug interactions

Metolazone + Tretinoin

Severity: Minor

Metolazone and Tretinoin: 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

Metolazone, a thiazide-type diuretic, can cause photosensitivity, and tretinoin increases skin sensitivity to ultraviolet light. Combined use may increase sunburn-like reactions, though the effect is usually mild.

What this interaction means in plain words

Metolazone and Tretinoin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Metolazone belongs to Cardiovascular; Tretinoin belongs to Dermatology.

Evidence level: Low

Why it happens

Additive photosensitizing effects on the skin.

What to do

Counsel on sun avoidance, protective clothing and sunscreen. Adjust the tretinoin regimen if skin irritation occurs.

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.

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Frequently asked questions

Can I take Metolazone with Tretinoin?

MediHelp rates the interaction as minor. Metolazone and Tretinoin have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Metolazone, a thiazide-type diuretic, can cause photosensitivity, and tretinoin increases skin sensitivity to ultraviolet light. Combined use may increase sunburn-like reactions, though the effect is usually mild.

How serious is the interaction between Metolazone and Tretinoin?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel on sun avoidance, protective clothing and sunscreen. Adjust the tretinoin regimen if skin irritation occurs.

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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