Health Guide
Drug Guide

Chlorothiazide (By mouth)

Chlorothiazide (klor-oh-THYE-a-zide)

This medicine is a diuretic that treats fluid retention and high blood pressure. A lower blood pressure can reduce the risk of stroke and heart attack.

Brand Name(s):


There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

This medicine is not right for everyone. Do not use it if you had an allergic reaction to chlorothiazide or a sulfonamide (sulfa drug), or if you are not able to urinate.

How to Use This Medicine:

Liquid, Tablet

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Warnings While Using This Medicine:

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Last Updated: 12/12/2016

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