Hydrochlorothiazide: The Thiazide Diuretic for Hypertension and Edema
What is Hydrochlorothiazide?
Hydrochlorothiazide (HCTZ) is a short-acting thiazide diuretic commonly prescribed to manage high blood pressure (hypertension) and to treat edema (fluid retention) caused by conditions such as heart failure, kidney disease, and liver cirrhosis along with various forms of renal dysfunction.
How Hydrochlorothiazide Works
Hydrochlorothiazide reduces blood volume works by blocking the reabsorption of sodium and chloride in the distal tubule of kidneys, which results in excretion of electrolytes and excess water from body thereby lowering blood pressure. This increases urine output, thereby reducing the amount of fluid in the body and swelling.
When to Use Hydrochlorothiazide
● Hypertension: It is often used as a first-line treatment for high blood pressure, either alone or in combination with other antihypertensive medications.
● Edema: To reduce swelling caused by fluid buildup in conditions such as heart failure, cirrhosis, or kidney disease.
● Kidney Stones: It helps prevent the formation of kidney stones by reducing calcium excretion.
Dosage
● Adult Dose for Hypertension: 12.5 mg to 50 mg once daily.
● Adult Dose for Edema: 25-100 mg daily, depending on the severity of fluid retention.
● Pediatric Dose: 1-3 mg/kg/day in 1-2 divided doses with a maximum dose of 37.5 mg in children below 2 years of age. In case of older children, the dose is typically 1-2 mg/kg/day.
Side Effects
● Dizziness, dehydration, electrolyte imbalances (especially low potassium levels), muscle cramps, and increased blood sugar levels in diabetics.
Common Brands in India: Microzide, Hydrodiuril, Aquazide.
FAQ
Can Hydrochlorothiazide cause dehydration?
Yes, because it is a diuretic, it increases urination, which can lead to dehydration if not monitored.
Does Hydrochlorothiazide cause potassium loss?
Yes, it can cause potassium depletion, which may require supplementation.
Can Hydrochlorothiazide be used for heart failure?
Yes, it is often prescribed for congestive heart failure to help reduce fluid buildup.
Disclaimer
Hydrochlorothiazide should be used under the supervision of a healthcare provider, particularly for managing electrolyte levels. HealthPil connects you with cardiologists and nephrologists for optimal management of hypertension and fluid retention.