Skip to content

Drug interactions

Methyclothiazide + Valganciclovir

Severity: Minor

Methyclothiazide and Valganciclovir: 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

Methyclothiazide is a thiazide that may compete with ganciclovir for renal tubular secretion, and diuretic-related volume depletion can reduce renal clearance. Clinical relevance is likely limited.

What this interaction means in plain words

Methyclothiazide and Valganciclovir 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; volume depletion may reduce clearance.

What to do

No routine change is needed. Monitor renal function and blood counts, and dose valganciclovir to renal function.

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 Methyclothiazide and Valganciclovir, 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 Methyclothiazide with Valganciclovir?

MediHelp rates the interaction as minor. Methyclothiazide and Valganciclovir have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Methyclothiazide is a thiazide that may compete with ganciclovir for renal tubular secretion, and diuretic-related volume depletion can reduce renal clearance. Clinical relevance is likely limited.

How serious is the interaction between Methyclothiazide and Valganciclovir?

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 routine change is needed. Monitor renal function and blood counts, and dose valganciclovir to renal function.

What other medicines interact with Valganciclovir?

MediHelp also lists interactions of Valganciclovir with, for example, Didanosine, Ganciclovir, Liposomal doxorubicin. The full list is on the Valganciclovir 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