Inospiron 25: Each tablet contains Spironolactone BP 25 mg.
Inospiron is a preparation of long-acting aldosterone antagonist, potassium-sparing Spironolactone. Spironolactone is a specific pharmacologic antagonist of aldosterone, acting primarily through competitive binding of receptors at the aldosterone dependent sodium-potassium exchange site in the distal convoluted renal tubule. Inospiron® causes increased amounts of sodium and water to be excreted, while potassium and magnesium is retained.
• Congestive heart failure
• Hepatic cirrhosis with ascites and oedema
• Nephrotic syndrome
• Primary hyperaldosteronism
• Essential hypertension
• For the treatment of patients with hypokalemia
Dosage & Administration
Edema in adults (congestive heart failure, hepatic cirrhosis, or nephrotic syndrome): An initial daily dosage of 100 mg of Inospiron® administered in either single or divided doses is recommended, but may range from 25 to 200 mg daily. Combined therapy with other diuretics is indicated when more rapid diuresis is desired.
Primary hyperaldosteronism: After the diagnosis of hyperaldosteronism has been established, Inospiron® may be administered in doses of 100 to 400mg daily in preparation for surgery. For patients who are considered unsuitable for surgery, Inospiron® may be employed for long-term maintenance therapy at the lowest effective dosage determined for the individual patient.
Essential hypertension: For adults, an initial daily dosage of 50 to 100 mg of Inospiron® administered in either single or divided doses is recommended.
Hypokalemia: Inospiron® in a dosage ranging from 25 mg to 100 mg daily is useful in treating a diuretic-induced hypokalemia.
Gynaecomastia may develop in association with the use of Spironolactone. Other adverse reactions are: GI symptoms including cramping and diarrhoea, drowsiness, lethargy, headache, urticaria, mental confusion, impotence, irregular menses or amenorrhoea and post-menopausal bleeding.
All patients receiving diuretic therapy should be observed for evidence of fluid or electrolyte imbalance. Hyperkalemia may occur in patients with impaired renal function or excessive potassium intake and can cause cardiac irregularities, which may be fatal.
Spironolactone is contraindicated in patients with acute renal insufficiency, significant impairment of renal function, anuria, hyperkalaemia or sensitivity to Spironolactone.
Use in Pregnancy & Lactation
Pregnancy: Spironolactone should not be used during pregnancy.
Lactation: Canrenone, an active metabolite of Spironolactone, appears in breast milk. If use of the drug is deemed essential an alternative method of infant feeding should be instituted.
ACE inhibitors: Concomitant administration of ACE inhibitors with potassium-sparing diuretics has been associated with severe hyperkalemia.
Alcohol, barbiturates, or narcotics: Potentiation of orthostatic hypotension may occur.
Corticosteroids, ACTH: Intensified electrolyte depletion, particularly hypokalemia, may occur.
Lithium: Lithium generally should not be given with diuretics. Diuretic agents reduce the renal clearance of lithium and add a high risk of lithium toxicity.
Digoxin: Spironolactone has been shown to increase the half-life of digoxin.
Symptoms of overdosage include drowsiness, mental confusion, dizziness, diarrhea and vomiting etc. Patients should induce vomiting or evacuate the stomach by lavage during Spironolactone overdoasge.
Inospiron 25: Each box contains 10 blister strips of 10 tablets.