Chlorthalidone
Brand: Thalitone
Key warning
Monitor potassium; a low level is what makes digoxin dangerous
Common side effects
- Low potassium
- Increased urination
- Dizziness on standing
- Raised blood sugar
- Raised uric acid
Key interactions & cautions
- Digoxin toxicity risk if potassium falls
- Lithium levels rise
- NSAIDs blunt the blood-pressure effect
- Adds to other blood-pressure drugs
Counseling points
- Take in the morning so you are not up overnight
- It works longer than hydrochlorothiazide
- Report muscle cramps or weakness - they can signal low potassium
- Rise slowly to avoid dizziness
High-yield study aid for exam prep — not a substitute for the package insert or a pharmacist’s dispensing reference.