⚕️ Full Prescribing Information
For complete safety information, warnings, and dosage guidelines:
View FDA Label (PDF) →📋 Overview
Hydrochlorothiazide (HCTZ) is a diuretic (water pill) commonly used for high blood pressure. It is inexpensive and often combined with other BP medications.
How It Works
HCTZ increases urine output by blocking sodium reabsorption in the kidneys, reducing blood volume and lowering blood pressure.
✓ FDA Approved Uses
- High blood pressure
- Fluid retention (edema)
- Kidney stones prevention
⚡ Common Side Effects
Contact your doctor if these persist or worsen:
- Frequent urination
- Dizziness
- Lightheadedness
- Low potassium
- Low sodium
- Increased blood sugar
🚨 Serious Side Effects
Seek immediate medical attention if you experience:
- Severe electrolyte imbalances
- Gout
- Pancreatitis
- Severe allergic reactions
- Kidney failure
⚠️ Do Not Use If
- Allergy to sulfonamides
- Anuria (no urine production)
- Severe liver or kidney disease
📢 Important Warnings
- Electrolyte monitoring needed
- May increase blood sugar
- Gout risk
- Photosensitivity
- Dehydration