Skip to content

Drug interactions

Chlorthalidone + Diazoxide

Severity: Moderate

Chlorthalidone and Diazoxide: 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 raise blood glucose, and combined use can cause or worsen hyperglycemia. They may also add to hypotension and hypokalemia.

What this interaction means in plain words

Chlorthalidone and Diazoxide 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.

Chlorthalidone belongs to Cardiovascular; Diazoxide belongs to Miscellaneous.

Evidence level: Moderate

Why it happens

Additive hyperglycemic effects through reduced insulin secretion (diazoxide) and impaired glucose tolerance with thiazide-type diuretics.

What to do

Monitor blood glucose, potassium and blood pressure. Adjust antidiabetic therapy or diazoxide dose if glucose rises.

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?

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 Chlorthalidone and Diazoxide, 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 Chlorthalidone with Diazoxide?

MediHelp rates the interaction as moderate. Chlorthalidone and Diazoxide 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 raise blood glucose, and combined use can cause or worsen hyperglycemia. They may also add to hypotension and hypokalemia.

How serious is the interaction between Chlorthalidone and Diazoxide?

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 glucose, potassium and blood pressure. Adjust antidiabetic therapy or diazoxide dose if glucose rises.

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.

Browse A–Z · Drug interactions

Get the app Sign in