-barbiturates, like phenobarbital
-lithium
-medicines for diabetes
-medicines for high blood pressure
-medicines for high cholesterol, like cholestyramine or colestipol
-NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
-prescription pain medicines
-skeletal muscle relaxants like tubocurarine
-steroid medicines like prednisone or cortisone

They need to know if you have any of these conditions:

-dehydration
-diabetes, high blood sugar
-high or low levels of electrolytes, like magnesium, potassium, or sodium in your blood
-kidney disease
-liver disease
-lupus
-an unusual or allergic reaction to chlorothiazide, sulfa drugs, other drugs, foods, dyes or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Visit your health care provider for regular checks on your progress. Check your blood pressure as directed. Ask your health care provider what your blood pressure should be. Also, find out when you should contact him or her.
Check with your health care provider if you have severe diarrhea, nausea, and vomiting, or if you sweat a lot. The loss of too much body fluid may make it dangerous for you to take this drug.
You may need to be on a special diet while you are taking this drug. Ask your health care provider. Also, find out how many glasses of fluids you need to drink each day.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand up or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this drug. Avoid alcoholic drinks.
Do not treat yourself for coughs, colds, or pain while you are using this drug without asking your health care provider for advice. Some drugs may increase your blood pressure.

Keep out of the reach of children and pets.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused drug after the expiration date.