Natrilix Sr (Indapamide)

Indapamide is a thiazide‑like diuretic used to manage conditions related to fluid overload and elevated blood pressure.

• Hypertension: lowers systolic and diastolic blood pressure, helping to reduce the risk of cardiovascular events.
• Edema associated with heart failure: promotes diuresis to decrease fluid accumulation and improve symptomatic relief.
• Renal impairment‑related edema: facilitates removal of excess fluid when kidney function is compromised.

• Indapamide inhibits sodium‑chloride reabsorption in the distal convoluted tubule of the nephron, leading to increased urinary excretion of sodium, chloride, and water. The resulting diuresis reduces plasma volume and peripheral vascular resistance, contributing to lower blood pressure and alleviation of fluid overload.

Indapamide may cause a range of adverse reactions, most of which are dose‑related and reversible upon discontinuation.

Common Side Effects

• Electrolyte imbalance: hyponatremia, hypokalemia, or hypomagnesemia.
• Increased urination: polyuria or nocturia.
• Dizziness or light‑headedness, especially when standing.
• Headache or mild fatigue.

Serious or Rare Side Effects

• Severe dehydration or electrolyte disturbances leading to arrhythmia.
• Acute gout attacks due to elevated uric acid levels.
• Allergic reactions such as rash, pruritus, or angioedema.

Before initiating therapy, clinicians should evaluate patient‑specific factors and monitor for potential complications.

• Monitor electrolytes: check serum sodium, potassium, and chloride regularly.
• Assess renal function: evaluate creatinine and eGFR before and during treatment.
• Caution in diabetes: monitor blood glucose as diuresis may affect glycemic control.
• Avoid abrupt discontinuation: taper dose to prevent rebound hypertension.
• Pregnancy and lactation: use only if potential benefit justifies risk, as safety data are limited.
• Store at ambient temperature: keep below 25°C, retain in original packaging, and protect from moisture.

Indapamide can alter the pharmacodynamic or pharmacokinetic profile of several co‑administered medicines.

Major Interactions (Avoid)

• Lithium: concomitant use may increase lithium concentrations, risking toxicity.
• NSAIDs: may blunt the diuretic effect and worsen renal function.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: additive blood‑pressure lowering effect; monitor for hypotension.
• Beta‑blockers: enhanced antihypertensive response; observe for excessive bradycardia.
• Antidiabetic agents: may potentiate hypoglycemia; adjust glucose monitoring accordingly.