Products
Spironolactone
Spironolactone (aldosterone antagonist)
Off-label oral anti-androgen for hormonal acne in adult women
Spironolactone is a systemic oral medication acting on androgen receptors in sebaceous glands. It has no interaction with melanocytes or skin surface. Fitzpatrick type has no bearing on safety or efficacy. It is not appropriate for men at any skin tone due to anti-androgenic effects.
A prescription blood pressure medication that also blocks the hormonal signals (androgens) that drive oil production and adult female acne. Particularly effective for the jawline, chin, and neck breakouts that worsen around menstruation. Used off-label (meaning prescribed for a use not on the FDA label, which is standard clinical practice). Requires a prescriber experienced with it for skin concerns. Not appropriate for men.
Sourced via EWG Skin Deep, one of the scientific databases used by the Yuka app to evaluate cosmetic ingredient safety.
Spironolactone 25mg/50mg/100mg tablets (generic)
Various manufacturers
Aldactone
Pfizer
Spironolactone is a potassium-sparing diuretic and aldosterone antagonist with anti-androgenic properties used off-label for hormonal acne in adult women. It competitively inhibits androgen receptors in the sebaceous gland, reducing sebum production. FDA-approved as a diuretic and heart failure medication but not for acne. Not appropriate for men (feminising effects including gynaecomastia) or patients trying to conceive. Potassium monitoring required at initiation due to hyperkalaemia risk.
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66-85% responder rate in adult female acne (Layton et al. 2017 meta-analysis, n=1,646).
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Anti-androgenic mechanism well-established in endocrinology; decades of safety data from cardiology use at higher doses.
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Optimal dosing for acne specifically: 50mg vs 100mg vs 150mg.
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Combination protocols with topical treatments or oral contraceptives.
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Efficacy in post-menopausal women with hormonal acne.
Spironolactone for adult female acne: a systematic review and meta-analysis
Layton et al. · JAMA Dermatology · 2017
Systematic review of 8 studies (n=1,646 women) found spironolactone 50-200mg/day significantly reduced acne lesion counts and severity scores vs. comparators, with a responder rate of 66-85%. Primary risks include hyperkalaemia (rare at low doses), breast tenderness, and menstrual irregularity. Not appropriate for men or anyone who may become pregnant without contraception.
PubMed ↗ PMID 40823723| Brand | Manufacturer | What differentiates it | Approval | Pricing |
|---|---|---|---|---|
| Spironolactone generic | Multiple manufacturers | 25-200mg tablets; the standard form prescribed for acne | FDA (for diuretic indication) | $10-40/month |
| Aldactone | Pfizer | Brand name; less commonly used for acne now that generics are available | FDA | $80-200/month |
| Carospir | CMP Pharma | Oral suspension form; useful for precise dose titration | FDA | Higher than tablet generics |
| Winlevi | Cassiopea | Topical clascoterone; androgen receptor inhibitor FDA-approved for acne; same mechanism without systemic effects | 2020 | $200-400/month |
Should You Try This?
Probably wait for more data
Clinic checklist
Universal
- Check the practitioner is licensed and registered. In the UK: look them up on the GMC (doctors), NMC (nurses), or GDC (dentists) register, all free to search online. In the US: search your state medical board. Takes 2 minutes. If they cannot tell you their regulatory body, leave.
- Ask to see the product box before treatment. It should be factory-sealed with a visible lot number and expiry date. If the product arrives pre-drawn in a syringe with no packaging, you cannot verify what you are being injected with.
- You should receive a written consent form before treatment. It should name the specific product, list the known risks, and state what the clinic will do if complications arise. A single generic form with no product name is not adequate.
- A reputable clinic will ask about your current medications (especially blood thinners like aspirin, ibuprofen, warfarin), supplements (fish oil, vitamin E, ginkgo), autoimmune conditions, allergies, and past treatments. If no one asks, they are skipping a safety step.
- Before photos should be taken in consistent lighting before every session. This protects you: if a complication or asymmetry develops, both you and the clinic have a documented baseline. If a clinic does not take before photos, they are not tracking outcomes.
- Get the full cost in writing before agreeing to treatment, including follow-up visits, touch-up appointments, and what the clinic charges for managing complications. Verbal quotes are not binding.
Procedure-specific
- Must be prescribed by a licensed dermatologist or physician comfortable prescribing off-label.
- Do not use if you are trying to conceive or may become pregnant.
- Report any menstrual irregularity, breast tenderness, or dizziness to your prescriber promptly.
- Have an initial potassium blood test as recommended by your prescriber.
- Understand this requires ongoing prescription and regular follow-up; it is not a one-time treatment.
Educational content only. This page summarises published clinical research and is not medical advice. Consult a qualified healthcare provider before making decisions about your care.