Increased thirst, lightheadedness, and loss of consciousness are symptoms that may occur when a person overdoses on chlorothiazide. Overdose effects may also include low electrolytes, dehydration, and irregular heart rhythm. There are various treatment options available for a chlorothiazide overdose, including certain medicines, supportive care, and "pumping the stomach."
Chlorothiazide (Diuril®) is a medication that is used for controlling high blood pressure and treating water retention (edema). The effects of a chlorothiazide will vary depending on a number of factors, including how much chlorothiazide was taken and whether it was taken with any other medicines, alcohol, and/or drugs.
If you happen to overdose on chlorothiazide, seek medical attention immediately.
The effects of a chlorothiazide overdose may include:
- Low electrolytes (especially low potassium, chloride, and sodium)
- Irregular heart rhythm (arrhythmia), especially in people taking dixogin (Digitek®, Lanoxin®).
This may cause signs or symptoms that include:
- Lightheadedness, dizziness, or fainting
- Decrease in urine output
- Drowsiness, headache, or back pain
- Slow or irregular heartbeat
- Dry mouth
- Increased thirst
- Muscle pain or cramps
- Nausea or vomiting
- Loss of consciousness.