Indapen Sr (Indapamide)

Indapamide is indicated for conditions involving elevated blood pressure or fluid overload, acting as a thiazide‑like diuretic.

• Hypertension: lowers systemic blood pressure by reducing plasma volume and peripheral resistance.
• Heart‑failure‑related edema: decreases excess fluid accumulation, improving symptoms such as swelling and shortness of breath.
• Renal‑disease‑associated edema: promotes diuresis to manage fluid retention in patients with chronic kidney disease.

• Indapamide inhibits the Na⁺/Cl⁻ cotransporter in the distal convoluted tubule of the nephron, reducing sodium and chloride reabsorption. This leads to increased urinary excretion of sodium, chloride, and water, producing a diuretic effect. The resultant decrease in extracellular fluid volume lowers cardiac preload and systemic vascular resistance, contributing to its antihypertensive action.

Indapamide may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Dizziness or light‑headedness
• Headache
• Nausea or gastrointestinal discomfort
• Increased urinary frequency
• Electrolyte disturbances such as low potassium
• Fatigue or weakness

Serious or Rare Side Effects

• Severe dehydration or electrolyte imbalance
• Hyponatremia or hyperuricemia
• Allergic reactions including rash, itching or angioedema
• Blood dyscrasias such as leukopenia or thrombocytopenia
• Pancreatitis
• Acute kidney injury

When prescribing Indapamide, clinicians should observe several safety considerations to minimize risks.

• Monitor electrolytes: check serum potassium, sodium and uric acid regularly.
• Assess renal function: evaluate creatinine clearance before initiation and during therapy.
• Caution in diabetes: diuretic‑induced hypoglycemia may occur; adjust antidiabetic drugs as needed.
• Avoid abrupt discontinuation: taper dose to prevent sudden blood‑pressure rebound.
• Contraindicated in severe hepatic impairment: use only if benefits outweigh risks.
• Store at room temperature: keep tablets in the original container, protect from moisture and heat.

Indapamide can affect, or be affected by, several concomitant medicines; awareness of key interactions helps ensure safe co‑administration.

Major Interactions (Avoid)

• Lithium: increased lithium levels may cause toxicity.
• Digoxin: enhanced digoxin concentration, raising risk of arrhythmia.
• Other potent diuretics: combined use can precipitate severe electrolyte loss.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: additive blood‑pressure lowering effect, monitor for hypotension.
• NSAIDs: may reduce diuretic efficacy and impair renal function.
• Antidiabetic agents: enhanced hypoglycemic effect, require glucose monitoring.
• Antihyperuricemic drugs: risk of altered uric acid levels, watch for gout flares.