Chlorthalidone is approved by the Food and Drug Administration (FDA) to treat high blood pressure and edema. Edema is retained fluid or swelling.
Some doctors also prescribe chlorthalidone for:
- Kidney stones
- Meniere’s disease (dizziness and ringing in the ears)
- Hypoparathyroidism (underactive parathyroid glands that can cause low blood calcium)
- Diabetes insipidus (a hormone problem that leads to too much urination)