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Systematic (IUPAC) name
4-chloro-N-(2-methyl-2,3-dihydroindol-1-yl)- 3-sulfamoyl-benzamide
CAS number 26807-65-8
ATC code C03BA11
PubChem 3702
DrugBank APRD01031
Chemical data
Formula C16H16ClN3O3S 
Mol. mass 365.835 g/mol
Pharmacokinetic data
Bioavailability  ?
Protein binding 71-79%
Metabolism Hepatic
Half life 14-18 hours
Excretion  ?
Therapeutic considerations
Pregnancy cat.


Legal status
Routes Oral

Indapamide is a non-thiazide sulphonamide diuretic drug marketed by Servier, generally used in the treatment of hypertension and edema caused by congestive heart failure. Indapamide is marketed as Natrilix SR (sustained release). Combination preparations with perindopril (an ACE inhibitor antihypertensive) are also available.


Form and composition

Each sustained-release coated tablet contains 1.5 mg of 1-(4-chloro-3-sulfamyl-benzamido)-2-methylindoline (or indapamide hemihydrate).


Essential hypertension.

Dosage and administration

One tablet daily.


Indapamide is contraindicated in known hypersensitivity to sulfonamides, severe renal failure, hepatic encephalopathy or severe hepatic failure and hypokalemia (low blood potassium levels).

There is insufficient safety data to recommend indapamide use in pregnancy or breastfeeding.


Caution is advised in the combination of indapamide with lithium and nonantiarrhythmic drugs causing wave burst arrhythmia (astemizole, bepridil, IV erythromycin, halofantrine, pentamidine, sultopride, terfenadine, vincamine).


Monitoring of potassium and uric acid serum levels is recommended, especially in subjects with a predisposition or a sensitivity to hypokalemia and in patients with gout.

Adverse effects

Commonly reported adverse events are hypokalemia (low potassium levels), fatigue, orthostatic hypotension (blood pressure decrease on standing up) and allergic manifestations.


Symptoms of overdosage would be those associated with a diuretic effect: electrolyte disturbances, hypotension, and muscular weakness. Treatment should be symptomatic, directed at correcting the electrolyte abnormalities.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Indapamide". A list of authors is available in Wikipedia.
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