Spironolactone, also known by the trade name ALDACTONE®, is a drug that works as a mineralocorticoid receptor (MR) antagonist. It was first approved by Pfizer Inc. in the United States in 1960. ALDACTONE oral tablets contain 25 mg, 50 mg, or 100 mg of the aldosterone antagonist spironolactone, which is a specific pharmacologic antagonist of aldosterone. Spironolactone acts primarily through competitive binding of receptors at the aldosterone-dependent sodium-potassium exchange site in the distal convoluted renal tubule. This causes increased amounts of sodium and water to be excreted, while potassium is retained. Spironolactone is indicated for heart failure, hypertension, edema associated with hepatic cirrhosis or nephrotic syndrome, and primary hyperaldosteronism. It acts as a diuretic and an antihypertensive drug and may be given alone or with other diuretic agents that act more proximally in the renal tubule. Click on the image below to begin the exploration journey of Spironolactone through the Synapse database!
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