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Aldactone<\/strong> \u03b5\u03af\u03bd\u03b1\u03b9 25 \/ 50 \/ 100 mg spironolactone tablet<\/strong> from RPG Life Sciences — a mineralocorticoid receptor antagonist (aldosterone antagonist)<\/strong> that acts on the mineralocorticoid receptor (MR) in the principal cells of the cortical collecting duct<\/strong>. Spironolactone was introduced by G.D. Searle in 1959 — designed as a synthetic steroid to antagonise aldosterone’s distal-tubule effect on sodium retention and potassium excretion. The first MR antagonist; remains the reference agent despite the availability of the more selective eplerenone. Half-life 1.4 hours (parent); 16-24 hours (active metabolites canrenone and 7-\u03b1-thiomethylspirolactone); onset 24-48 hours (needs time for receptor antagonism to manifest at the tissue level); peak effect 2-3 days; duration 2-3 days after discontinuation. Primary indication: heart failure with reduced ejection fraction (HF-REF), primary aldosteronism, resistant hypertension, cirrhotic ascites, adjunct treatment for hirsutism and PCOS<\/strong>. Typical dosing: Resistant hypertension<\/strong> (BP not controlled on ACEi\/ARB + CCB + thiazide): 25-50 mg once daily — PATHWAY-2 evidence. Spironolactone beats bisoprolol and doxazosin as the fourth agent in resistant HTN. Not a first-line antihypertensive.<\/strong> Primary aldosteronism (Conn’s):<\/strong> 50-400 mg\/day until potassium and BP normalise, then maintenance 25-100 mg. Key contraindications: see full list below. Monitor electrolytes, creatinine, and glucose. Do not combine with lithium<\/strong> (thiazide\/loop diuretics can precipitate lithium toxicity). Pregnancy use is case-specific<\/strong> (see pregnancy note). For most hypertensive patients, diuretics work best as the second or third agent<\/strong> — typically combined with an ARB, ACE inhibitor, or calcium-channel blocker rather than used alone.<\/p>\n<\/div>\n \ud83d\udce6 \u039a\u03ac\u03b8\u03b5 \u03c0\u03b1\u03c1\u03b1\u03b3\u03b3\u03b5\u03bb\u03af\u03b1 \u03ba\u03b1\u03bb\u03cd\u03c0\u03c4\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03a0\u03bf\u03bb\u03b9\u03c4\u03b9\u03ba\u03ae \u0395\u03b3\u03b3\u03cd\u03b7\u03c3\u03b7\u03c2 \u0395\u03c0\u03b1\u03bd\u03b1\u03c0\u03bf\u03c3\u03c4\u03bf\u03bb\u03ae\u03c2<\/strong><\/a> \u2014 \u03b5\u03ac\u03bd \u03c4\u03bf \u03b4\u03ad\u03bc\u03b1 \u03c3\u03b1\u03c2 \u03b4\u03b5\u03bd \u03c6\u03c4\u03ac\u03c3\u03b5\u03b9 \u03b5\u03bd\u03c4\u03cc\u03c2 20 \u03b5\u03c1\u03b3\u03ac\u03c3\u03b9\u03bc\u03c9\u03bd \u03b7\u03bc\u03b5\u03c1\u03ce\u03bd, \u03c4\u03bf \u03b5\u03c0\u03b1\u03bd\u03b1\u03c0\u03bf\u03c3\u03c4\u03ad\u03bb\u03bb\u03bf\u03c5\u03bc\u03b5.<\/p>\n \u03a4\u03b1 \u03b3\u03b5\u03bd\u03cc\u03c3\u03b7\u03bc\u03b1 \u03c6\u03ac\u03c1\u03bc\u03b1\u03ba\u03ac \u03bc\u03b1\u03c2 \u03c0\u03c1\u03bf\u03ad\u03c1\u03c7\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03ba\u03b1\u03c4\u03b1\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03c4\u03ad\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03b9\u03c3\u03c4\u03bf\u03c0\u03bf\u03b9\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd WHO-GMP \u03ba\u03b1\u03b9 \u03b1\u03c0\u03bf\u03c3\u03c4\u03ad\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c0\u03b1\u03b3\u03ba\u03bf\u03c3\u03bc\u03af\u03c9\u03c2 \u03c3\u03b5 \u03b4\u03b9\u03b1\u03ba\u03c1\u03b9\u03c4\u03b9\u03ba\u03ae, \u03b1\u03c0\u03bb\u03ae \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1 \u2014 \u03c7\u03c9\u03c1\u03af\u03c2 \u03cc\u03bd\u03bf\u03bc\u03b1 \u03c6\u03b1\u03c1\u03bc\u03ac\u03ba\u03bf\u03c5 \u03c3\u03c4\u03bf \u03b5\u03be\u03c9\u03c4\u03b5\u03c1\u03b9\u03ba\u03cc \u03c4\u03bf\u03c5 \u03b4\u03ad\u03bc\u03b1\u03c4\u03bf\u03c2. \u039f\u03b9 \u03c0\u03bb\u03b7\u03c1\u03c9\u03bc\u03ad\u03c2 \u03bc\u03b5 \u03ba\u03ac\u03c1\u03c4\u03b1 \u03b4\u03c1\u03bf\u03bc\u03bf\u03bb\u03bf\u03b3\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03ad\u03c3\u03c9 \u03c1\u03c5\u03b8\u03bc\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03c4\u03ae (\u03bf\u03b9 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03b1\u03c6\u03ad\u03c2 \u03b5\u03ba\u03ba\u03b1\u03b8\u03ac\u03c1\u03b9\u03c3\u03b7\u03c2 \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03bf\u03c5\u03bd \u03c1\u03c5\u03b8\u03bc\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03b5\u03c0\u03b5\u03be\u03b5\u03c1\u03b3\u03b1\u03c3\u03c4\u03ae \u03c0\u03bb\u03b7\u03c1\u03c9\u03bc\u03ce\u03bd \u03bc\u03b5 \u03ba\u03ac\u03c1\u03c4\u03b1 \u2014 \u03c0\u03bf\u03c4\u03ad \u201cMedsBase\u201d \u03ae \u03bf\u03c0\u03bf\u03b9\u03bf\u03b4\u03ae\u03c0\u03bf\u03c4\u03b5 \u03cc\u03bd\u03bf\u03bc\u03b1 \u03c6\u03b1\u03c1\u03bc\u03ac\u03ba\u03bf\u03c5). \u0393\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03b4\u03b5\u03ba\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03c0\u03bb\u03b7\u03c1\u03c9\u03bc\u03ad\u03c2 \u03bc\u03b5 \u03ba\u03c1\u03c5\u03c0\u03c4\u03bf\u03bd\u03bf\u03bc\u03af\u03c3\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03c1\u03b1\u03c0\u03b5\u03b6\u03b9\u03ba\u03ae \u03bc\u03b5\u03c4\u03b1\u03c6\u03bf\u03c1\u03ac SEPA. \u039a\u03ac\u03b8\u03b5 \u03c0\u03b1\u03c1\u03b1\u03b3\u03b3\u03b5\u03bb\u03af\u03b1 \u03ba\u03b1\u03bb\u03cd\u03c0\u03c4\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03a0\u03bf\u03bb\u03b9\u03c4\u03b9\u03ba\u03ae \u0395\u03c0\u03b1\u03bd\u03b1\u03c0\u03bf\u03c3\u03c4\u03bf\u03bb\u03ae\u03c2 \u0395\u03be\u03b1\u03c3\u03c6\u03b1\u03bb\u03af\u03c3\u03b5\u03ce\u03c2 \u03bc\u03b1\u03c2.<\/p>\n Aldactone is an oral 25 \/ 50 \/ 100 mg spironolactone tablet from RPG Life Sciences, supplied in 30-180 tablets. Spironolactone was introduced by G.D. Searle in 1959 — designed as a synthetic steroid to antagonise aldosterone’s distal-tubule effect on sodium retention and potassium excretion. The first MR antagonist; remains the reference agent despite the availability of the more selective eplerenone.<\/p>\n Spironolactone inhibits the mineralocorticoid receptor (MR) in the principal cells of the cortical collecting duct<\/strong>. The downstream effects:<\/p>\n Pivotal trial evidence:<\/strong> RALES (1999)<\/strong> — landmark trial of spironolactone 25-50 mg in severe HF-REF; 30% reduction in all-cause mortality. Established aldosterone antagonism as standard HF-REF therapy. EPHESUS<\/strong> \u03ba\u03b1\u03b9 EMPHASIS-HF<\/strong> extended to eplerenone. PATHWAY-2 (2015)<\/strong> — spironolactone 25-50 mg was the most effective fourth agent for resistant hypertension vs bisoprolol or doxazosin. TOPCAT<\/strong> — modest benefit in HF with preserved ejection fraction (HF-PEF); signal stronger in Americas arm than Russia arm (controversial).<\/p>\n Heart dose:<\/strong> Resistant hypertension<\/strong> (BP not controlled on ACEi\/ARB + CCB + thiazide): 25-50 mg once daily — PATHWAY-2 evidence. Spironolactone beats bisoprolol and doxazosin as the fourth agent in resistant HTN. Not a first-line antihypertensive.<\/strong> Primary aldosteronism (Conn’s):<\/strong> 50-400 mg\/day until potassium and BP normalise, then maintenance 25-100 mg.<\/p>\n Other indications:<\/strong> Heart failure with reduced ejection fraction (EF ≤35%):<\/strong> 12.5-25 mg once daily; target 25-50 mg if tolerated (RALES trial). Cirrhotic ascites:<\/strong> 50-400 mg\/day, usually with furosemide 20-160 mg (1:2.5 ratio); target 0.5 kg\/day weight loss. Hirsutism \/ PCOS \/ acne (female patients):<\/strong> 50-200 mg\/day — suppresses androgen-driven hair growth and acne over 3-6 months (off-label but well-established).<\/p>\n Administration:<\/strong> once daily (or twice daily for high-dose loop diuretics in HF), in the morning. Evening dosing causes nocturia and should be avoided when possible. Take at the same time each day. Food does not significantly affect absorption for any of these diuretics.<\/p>\n Monitoring schedule:<\/strong><\/p>\n Discontinuation:<\/strong> no withdrawal syndrome but abrupt stop can cause rebound volume retention in HF patients on chronic high-dose loop diuretics — taper where possible and monitor weight.<\/p>\n Common (>1%):<\/strong><\/p>\n Uncommon but clinically important:<\/strong><\/p>\n Pregnancy:<\/strong> absolutely contraindicated<\/strong> — anti-androgen activity causes feminisation of male fetuses.<\/p>\n Breastfeeding:<\/strong> generally acceptable at low doses; high doses can suppress lactation (particularly thiazides). Alternative antihypertensives (propranolol, nifedipine) preferred when possible.<\/p>\n\u0393\u03b9\u03b1\u03c4\u03af \u03bd\u03b1 \u03c0\u03b1\u03c1\u03b1\u03b3\u03b3\u03b5\u03af\u03bb\u03b5\u03c4\u03b5 \u03b1\u03c0\u03cc \u03c4\u03b7 MedsBase<\/h3>\n
What Is Aldactone?<\/h2>\n
How Spironolactone Works<\/h2>\n
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Approved and Evidence-Based Uses<\/h2>\n
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Aldactone Dosage<\/h2>\n
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\u0391\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03ac\u03c3\u03b5\u03b9\u03c2 \u03a6\u03b1\u03c1\u03bc\u03ac\u03ba\u03c9\u03bd<\/h2>\n
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Where Aldactone Fits in the Diuretic Class<\/h2>\n