Roaccutane (Isotretinoin) vs Spironolactone: Which Is Right for Inflammatory Acne in Women?

Patients with severe inflammatory acne, and adult women with acne, often ask whether to choose Isotretinoin (Roaccutane) or Spironolactone. The two drugs work in completely different ways. Isotretinoin greatly reduces oil (sebum) production and also affects C. acnes bacteria, while Spironolactone blocks androgen hormone signals (androgen receptor), so it reduces oil driven by hormones. This article summarizes how to choose between them according to severity and pregnancy plans, following the guidance of the Institute of Dermatology (IOD). Choosing and monitoring these medicines should always be done under a doctor's care.

Isotretinoin (Roaccutane): for nodular acne and acne that leaves scars

• Main indications: nodulocystic acne, moderate acne that has not responded to treatment, acne that leaves scars, gram-negative folliculitis, hidradenitis suppurativa (chronic inflammation of the hair follicles) and severe oily skin/rosacea.

• Key strengths: long-lasting results (cumulative dose 120–150 mg/kg), with the reduction in oil lasting for years after the medicine is stopped, and it helps reduce scarring from deep cystic acne.

• Important contraindication: must not be used during pregnancy because it is a severe teratogen (causes serious birth defects). Women who could become pregnant must use strict contraception.

• Monitoring: liver function (LFT), lipid profile and CBC are checked before starting and during treatment as directed by the doctor.

Spironolactone: for hormonal acne in adult women

• Main indications: hormonal acne in adult women (typically along the jaw and chin and flaring before periods), acne from PCOS, hirsutism (excess hair growth) and hormonal hair loss in women.

• Dosage: start at 25–50 mg/day and increase up to 100–200 mg/day depending on response. It works well as continuous (maintenance) treatment after Isotretinoin.

• Contraindications: should not be used in men (risk of gynecomastia, or breast enlargement), must not be used during pregnancy or when planning pregnancy, and is not suitable for people with high blood potassium or kidney problems.

• Monitoring: blood pressure and potassium (K+) levels are checked, especially in people over 45, those taking ACEI/ARB/NSAID medicines, or those with kidney problems.

Using them together and how to choose

In adult women who have both hormonal acne and scars, the doctor may use Spironolactone together with low-dose Isotretinoin, or use Isotretinoin for 6–12 months first and then continue with Spironolactone as maintenance. A summary of how to choose is as follows.

• Want long-term oil reduction: Isotretinoin

• Hormonal acne and planning pregnancy within 3 years: Spironolactone (together with contraception)

• Men: Isotretinoin (because Spironolactone has anti-androgen effects)

• Severe nodular inflammatory acne: Isotretinoin

• Mild to moderate hormonal acne in women: try starting with Spironolactone first

• PCOS: Spironolactone may be used together with Metformin and a low-dose hormonal contraceptive pill

Frequently asked questions

Which medicine works faster? Isotretinoin usually shows clear results within 6–8 weeks, while Spironolactone takes about 8–12 weeks. How quickly you respond also depends on the severity and type of acne.

Can I take Spironolactone after Roaccutane? Yes. This is a sequential strategy often used in adult women, with Spironolactone used as a control medicine after the Isotretinoin course.

Does Spironolactone really cause infertility? There is no clear evidence, but it is theoretically possible, so contraception is recommended while taking it, and you should talk to your doctor if you plan to become pregnant.

Can men use Spironolactone for acne? It is not recommended because the risk of gynecomastia (breast enlargement) is higher, over 30%. Men should consider Isotretinoin or topical retinoids instead.

Choosing an acne medicine for women requires considering severity, type of acne and pregnancy plans together, so the decision should be made with a dermatologist. If you are unsure which medicine to use, you can consult Siam Dermatology at +66 61 448 7000 or LINE @siamderm

Written by Dr. Patara Voravutinon, Dermatologist · Last reviewed July 16, 2026