Spironolactone 50mg Tablet is a prescription potassium-sparing diuretic, aldosterone antagonist and antiandrogen used to treat conditions including heart failure, edema, hypertension and hyperaldosteronism. Its antiandrogenic properties also make spironolactone a commonly prescribed medicine for hormonal acne and, in appropriate patients, an antiandrogen in feminizing hormone therapy (HRT).
Aldactone® is a reference brand containing spironolactone. Generic spironolactone 50mg tablets contain the same active pharmaceutical ingredient, while manufacturer, inactive ingredients, packaging and regulatory status may vary by market.
Spironolactone is a mineralocorticoid receptor antagonist with diuretic and antiandrogenic properties.
It blocks the action of aldosterone, reducing sodium and water retention while limiting potassium loss through the kidneys. This makes it useful in several cardiovascular and fluid-retention conditions.
Spironolactone also has antiandrogenic activity, reducing the effects of androgen hormones. This pharmacological property supports its use in selected patients with hormonal acne and as an androgen-blocking medicine in some feminizing HRT regimens.
Spironolactone 50mg may be prescribed for:
Approved indications vary by country. Acne, hirsutism and some hormone-related uses may be off-label depending on local regulations.
Spironolactone has both aldosterone-blocking and antiandrogenic effects.
Spironolactone blocks mineralocorticoid receptors, reducing aldosterone-mediated sodium and water retention. This increases urinary sodium and water excretion while conserving potassium.
Spironolactone also reduces androgen activity. This can decrease androgen stimulation of sebaceous glands and other androgen-sensitive tissues, making it useful in selected patients with hormonal acne and for androgen suppression during feminizing HRT.
Spironolactone 50mg is commonly prescribed for hormonal acne, particularly when androgen activity contributes to persistent or recurrent breakouts.
Its antiandrogenic effect can reduce androgen-driven sebum production and may help improve acne in appropriate patients.
Spironolactone is not a conventional antibiotic or topical acne treatment. It works through hormonal pathways and is generally considered when hormonal factors are clinically relevant.
Hormonal acne may present as persistent acne around the chin, jawline and lower face and can fluctuate with hormonal changes.
Spironolactone can reduce androgen effects on the skin and may help control excess oil production and acne lesions.
The appropriate dose is individualized. A 50mg tablet may be prescribed as part of an acne treatment regimen, but the correct dose and duration should be determined by a healthcare professional.
Spironolactone 50mg may be used as an antiandrogen in feminizing hormone therapy (HRT) for appropriate patients.
Its role in HRT is to reduce androgen activity. Spironolactone is not estrogen and does not replace estrogen therapy. It may be combined with estrogen when clinically appropriate.
Treatment may involve monitoring of:
HRT protocols differ between countries and patients, so treatment should be individualized by an appropriately qualified healthcare professional.
Spironolactone can reduce the physiological effects of androgens and is therefore used as an antiandrogen in selected clinical situations.
Potential uses include:
The required dose varies according to the treatment objective and individual patient factors.
Spironolactone is an established aldosterone antagonist used in appropriate patients with heart failure.
By blocking aldosterone, it can help reduce fluid retention and counteract certain harmful effects of excessive aldosterone activity on the cardiovascular system.
Patients receiving spironolactone for heart failure require appropriate monitoring of kidney function and potassium levels.
Spironolactone may be prescribed for edema and fluid retention associated with selected heart, liver or kidney conditions.
It promotes sodium and water excretion while conserving potassium.
Because edema can have many causes, the underlying condition should be assessed before treatment.
Spironolactone can lower blood pressure and may be prescribed for hypertension, particularly when excess aldosterone contributes to high blood pressure or when additional antihypertensive treatment is required.
Spironolactone is commonly used for primary hyperaldosteronism because it directly blocks the effects of excessive aldosterone.
The required dose may be different from the 50mg tablet strength depending on the patient’s condition and response.
Aldactone® is a reference brand containing spironolactone.
Generic spironolactone 50mg products contain the same active pharmaceutical ingredient as Aldactone, subject to the applicable regulatory authorization. Manufacturers, inactive ingredients and packaging can differ.
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The appropriate dose depends on the indication, patient age, kidney function, serum potassium, response to treatment and other medicines.
A 50mg tablet may be used as a starting dose, maintenance dose or part of an individualized treatment regimen depending on the condition.
For acne and HRT, the prescribed dose should be determined by the treating healthcare professional. Cardiovascular and fluid-retention conditions may require different dosing strategies.
Do not change the dose or stop treatment without medical advice.
Possible adverse effects include:
Because spironolactone has antiandrogenic effects, gynecomastia may occur in some men.
A potentially serious adverse effect is hyperkalemia, particularly in patients with kidney impairment or those taking other potassium-raising medicines.
Healthcare professionals may monitor:
Monitoring becomes particularly important after starting therapy or changing the dose and in patients taking other medicines that affect potassium or kidney function.
Spironolactone is a potassium-sparing medicine.
It can increase serum potassium, especially in people with kidney impairment or those taking ACE inhibitors, ARBs, potassium supplements or other medicines that increase potassium.
Patients should not routinely use potassium supplements or potassium-containing salt substitutes unless specifically instructed by a healthcare professional.
Potentially important interactions include:
Tell your healthcare professional about all prescription medicines, over-the-counter medicines, vitamins and supplements before treatment.
Spironolactone 50mg Tablet is a prescription medicine supplied through appropriately licensed pharmacies and pharmaceutical suppliers.
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Availability, prescription requirements, approved indications and import regulations vary across the USA, UK, UAE/Dubai, Australia, Singapore, Thailand, China and Russia.
Spironolactone 50mg may be prescribed for heart failure, edema, hypertension and hyperaldosteronism. It may also be prescribed for hormonal acne and as an antiandrogen in selected feminizing HRT regimens.
The generic name is spironolactone.
Aldactone is a reference brand containing spironolactone. An appropriately authorized generic spironolactone 50mg product contains the same active pharmaceutical ingredient.
Yes. Spironolactone is commonly prescribed for hormonal acne because of its antiandrogenic activity. Acne use may be off-label depending on the country.
It can. By reducing androgen activity, spironolactone may reduce androgen-driven sebum production and help improve hormonal acne in selected patients.
Yes. Spironolactone may be prescribed as an antiandrogen in feminizing HRT. It is used to reduce androgen activity rather than to provide estrogen.
Spironolactone is not estrogen. Within feminizing HRT, it is primarily used as an antiandrogen or androgen blocker when clinically appropriate.
It may be. Spironolactone can form part of some feminizing HRT regimens, with treatment individualized according to the patient’s clinical needs and monitoring requirements.
Yes. Spironolactone is a potassium-sparing diuretic and aldosterone antagonist.
Yes. Spironolactone can lower blood pressure and may be used as an antihypertensive medicine.
Yes. Spironolactone can increase potassium levels and may cause hyperkalemia.
Healthcare professionals commonly monitor potassium and kidney function, particularly after starting treatment and following dose changes.
Spironolactone is a prescription medicine. It should be obtained through an appropriately licensed pharmacy or authorized pharmaceutical supplier.
Spironolactone is marketed in many countries, although brand names, approved indications, formulations and prescription requirements vary between markets.
Medical Disclaimer: This product information is provided for educational and informational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. Spironolactone is a prescription medicine that can increase serum potassium and affect kidney function and may interact with numerous medicines. Its use for acne and feminizing HRT should be individually assessed by a qualified healthcare professional. The appropriate indication, dose, monitoring and treatment duration depend on the patient’s clinical circumstances. Always consult a healthcare professional before starting, stopping or changing spironolactone treatment.
Last Updated: August 23, 2026
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Spironolactone 50mg Tablet
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