Chemical Name: CHLORTHALIDONE (klor-THAL-i-doan)
Chlorthalidone is a thiazide-like diuretic used to treat high blood pressure and swelling due to excess body water. Chlorthalidone may also be used to treat other conditions as determined by your doctor.
Some medicines or medical conditions may interact with Chlorthalidone. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking diazoxide, digoxin, or lithium. Inform your doctor of any other medical conditions, allergies, pregnancy, or breast-feeding. Contact your doctor or pharmacist if you have any questions or concerns about taking this medicine.
Follow the directions for using this medicine provided by your doctor. Chlorthalidone will increase urination. If you are taking 1 dose of Chlorthalidone daily, take it in the morning to prevent this from affecting your sleep. If you are taking more than 1 dose daily, take the last dose no later than 6 pm. STORE Chlorthalidone at room temperature below 86 degrees F (30 degrees C) in a tightly-closed container, away from heat, moisture, and light. IF YOU MISS A DOSE OF Chlorthalidone, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
IF YOU HAVE HAD A SEVERE ALLERGIC REACTION to Chlorthalidone or any other sulfonamide medicine (such as Septra DS, Bactrim DS, Gantrisin, glyburide, or probenecid), contact your doctor or pharmacist before taking this medicine. A severe reaction includes a severe rash, hives, breathing difficulties, or dizziness. If you have a question about whether you are allergic to this medicine or if a certain medicine is a sulfonamide, contact your doctor or pharmacist. YOUR DOCTOR MAY HAVE ALSO PRESCRIBED a potassium supplement for you. If so, follow the dosing carefully. Do not start taking additional potassium on your own or change your diet to include more potassium without first checking with your doctor. Chlorthalidone MAY CAUSE dizziness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to this medicine. Chlorthalidone MAY CAUSE increased sensitivity to the sun. Avoid exposure to the sun or sunlamps until you know how you react to this medicine. Use a sunscreen or protective clothing if you must be outside for a prolonged period. BEFORE YOU BEGIN TAKING ANY NEW MEDICINE either prescription or over-the-counter, check with your doctor or pharmacist. FOR WOMEN: Chlorthalidone IS EXCRETED IN BREAST MILK. DO NOT BREAST-FEED while taking this medicine.
Possible side effects
SIDE EFFECTS, that may go away during treatment, include dizziness or lightheadedness especially when sitting up or standing, nausea, diarrhea, or loss of appetite. If they continue or are bothersome, check with your doctor. CHECK WITH YOUR DOCTOR AS SOON AS POSSIBLE if you experience rash or itching, muscle pain or cramps, vomiting, restlessness, dry mouth, unusual thirst, unusual tiredness or weakness, rapid or irregular heartbeat, or drowsiness. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.
Drug interactions can result in unwanted side effects or prevent a medicine from doing its job. Use our drug interaction checker to find out if your medicines interact with each other.
If you take too much
If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include dry mouth; excessive urination followed by a decrease in amount of urine; muscle cramps; and weak or irregular heartbeat, especially if you are also taking digoxin.
DO NOT SHARE Chlorthalidone with others for whom it was not prescribed. DO NOT USE Chlorthalidone for other health conditions. KEEP Chlorthalidone out of the reach of children. IF USING Chlorthalidone FOR AN EXTENDED PERIOD OF TIME, obtain refills before your supply runs out.