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Spironolactone for Acne: How It Works and What to Expect
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How Long Does Spironolactone Take to Work?
Asking how long spironolactone takes to work for acne is to be expected — when you're dealing with constant breakouts, you want results fast. Most patients see some results within two to three months, says Bartash. That said, full results can take three to six months. It’s unfortunately a slow working treatment option.
“Spironolactone is not an overnight treatment, and I always counsel patients to be patient with the process,” says McFarland, “Most patients begin noticing improvement after about 8 to 12 weeks, with continued benefits over the next several months.”
Spironolactone Side Effects
A 2025 meta-review in the Journal of Cosmetic Dermatology suggests that spironolactone is a well-tolerated acne treatment. Still, the drug has some possible side effects.
Common Side Effects
In both the research and McFarland and Bartash’s experience, the most common side effects of spironolactone are:
Dizziness or lightheadedness
Menstrual irregularities
Breast tenderness
Increased urination
Fatigue or daytime sleepiness
Headache
GI upset
In clinical trials, participants report the above side effects too. In one clinical trial, most participants found them to be manageable, though missed periods, daytime sleepiness, and increased urination did lead some patients to discontinue treatment, per the International Journal of Women's Dermatology.
Serious Side Effects to Know About
Spironolactone has mild diuretic properties, says McFarland, so it’s important to get enough fluids to stay hydrated. Even mild diuretic properties may be harmful for those with kidney disease and others at risk of hyperkalemia (high potassium).
To reduce the risk of severe side effects, a healthcare provider reviews a patient’s medical history before prescribing spironolactone. They’ll recommend alternative acne treatments to those with kidney disease or a high risk for hyperkalemia.
Why Men Shouldn't Take Spironolactone for Acne
Spironolactone is not recommended for acne in men. That’s because the medication’s anti-androgen effects may cause feminizing side effects in this population. These include gynecomastia (enlarging of male breast tissue) and loss of libido (sex drive), per a 2022 review in Clinical, Cosmetic and Investigational Dermatology. The same review points out that women who took spironolactone did not experience these two side effects.
Can You Combine Spironolactone with Other Acne Treatments?
Spironolactone is a team player. McFarland says she regularly pairs spironolactone with topical medications or other therapies. She typically doubles down on treatments in the first few months. A topical treatment, such as tretinoin, controls active breakouts. In the background, spironolactone works on the underlying cause. Once a few months have passed, she transitions patients to spironolactone only.
“Spironolactone often works best as part of a comprehensive acne treatment plan,” McFarland explains, “Because spironolactone targets hormonal pathways while topical medications address clogged pores, bacteria, and inflammation, these treatments often complement one another and produce better results than either approach alone.”
What Happens When You Stop Taking Spironolactone?
Acne may return if you stop taking spironolactone. That’s because the medication blocks the effects of hormones that drive acne. If it’s no longer present, hormonal levels may return to where they were before.
To avoid this some patients stay on a maintenance dose long-term. They view spironolactone as part of their routine versus a fast solution. Others taper off, then take other measures to manage hormone levels. A prescribing provider can help determine what will work best in your case.
The Bottom Line
Spironolactone can be a successful acne treatment for women. Yet it's only effective for hormonal acne, and can take some time to work. That's why it's best to view it as part of a larger plan to treat acne, not a standalone act. If you’re looking to explore hormonal acne treatments further, Mochi Health can help. We connect members to healthcare providers who help them explore available skincare treatments.
FAQs
Is spironolactone FDA-approved for acne?
Currently, spironolactone is not FDA-approved for acne. However, many providers prescribe it off-label. That’s because clinical trials demonstrate that it’s an effective hormonal acne treatment.
Is 50mg of spironolactone enough for acne?
In some studies, 50mg of spironolactone led to marked improvement in acne. However, the exact dose a healthcare provider prescribes depends on personal factors and may range from 25mg–200mg. These include acne severity and a patient's medical history. A provider may also start someone on a lower dose, then increase it as treatment progresses.
Can spironolactone cause weight gain?
The spironolactone for acne side effects don’t include weight gain. But someone may experience weight gain when taking spironolactone. Both hormonal acne and weight gain are symptoms of polyendocrine metabolic ovarian syndrome (PMOS; formerly PCOS). Someone who has PMOS who takes spironolactone may experience weight gain, independent of this medication but at the same time.
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