Before taking ethacrynic acid,
tell your doctor and pharmacist if you are allergic to ethacrynic acid, any other medications or any of the ingredients in ethacrynic acid tablets. Ask your doctor or pharmacist for a list of the ingredients.
tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements and herbal products you are taking or plan to take. Be sure to mention any of the following: other blood pressure medications, anticoagulants ('blood thinners') such as warfarin (Coumadin), corticosteroids (e.g., prednisone), digoxin (Lanoxin), heart medications, lithium (Eskalith, Lithobid), medications for diabetes, and probenecid (Benemid). Your doctor may need to change the doses of your medications or monitor you more carefully for side effects.
tell your doctor if you have or have ever had diabetes, gout, or liver disease.
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking ethacrynic acid, call your doctor.
talk to your doctor about the risks and benefits of taking ethacrynic acid if you are 65 years of age or older. Older adults should not usually take ethacrynic acid because it is not as safe as other medications that can be used to treat the same condition.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking ethacrynic acid.
you should know that this medication may make you drowsy. Do not drive a car or operate machinery until you know how this affects you.
ask your doctor about the safe use of alcohol during your treatment with ethacrynic acid. Alcohol can make the side effects of this medication worse.