Spironolactone for PCOS Spironolactone for PCOS

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13 minute read Updated on 2nd February 2026

Spironolactone for PCOS

Written by David Letsa, MD
Medically reviewed by Katerina Shkodzik, MD, Ob&Gyn

Living with Polycystic Ovary Syndrome (PCOS) can be challenging and often frustrating. It's a complex hormonal condition where the ovaries may produce an abnormal amount of androgens, or male hormones, leading to a wide range of symptoms that can affect you both physically and emotionally. 

It can feel disheartening to learn that the exact cause of PCOS is still unknown and that there isn't a single cure. However, this does not mean you are without options or hope. The focus of care is on managing symptoms, and thankfully, many effective treatments are available that can help you feel more in control of your health and wellbeing.

The most important step you can take is to partner with a healthcare provider you trust. They can work with you to create a personalized and effective treatment plan. For some, this plan might include a medication such as spironolactone, which has proven to be a practical and effective off-label option for managing specific symptoms. This article delves into the use of spironolactone for PCOS, exploring how it works, its benefits, potential side effects, and its role in managing this health issue. 

Understanding PCOS and Treatment Options

PCOS is an endocrine condition affecting how the ovaries function and can influence the menstrual cycle, fertility, metabolism, skin, and mood. Living with PCOS can feel like assembling a puzzle where the symptoms seem unrelated. This group of symptoms can significantly affect a woman's quality of life. These symptoms extend beyond influencing self-image, confidence, and fertility issues that can be difficult to discuss even with close friends or family.

PCOS symptoms include persistent acne, excess facial and body hair (hirsutism), female pattern hair loss, infertility, and irregular menstrual cycles. These symptoms are often caused by hormonal imbalance, mainly too many male hormones like testosterone.

Most women with PCOS usually have insulin resistance, meaning their bodies don’t respond appropriately to insulin. As a result, insulin levels rise, leading to excess ovarian androgen production. Excess weight (obesity) can also raise insulin levels, making PCOS symptoms worse.

One of the most challenging aspects of living with PCOS is the lack of clear guidance, which underscores the need for reliable information and consistent care. Despite these challenges, one key truth remains: every case of PCOS is unique, and there is no single test to diagnose it specifically. Doctors diagnose PCOS using the Rotterdam criteria. A diagnosis requires at least two of three signs: 

  • Irregular or absent ovulation (often resulting in irregular or missed periods); 

  • Clinical or laboratory evidence of excess androgens (like acne, excessive hair growth on the face and body, or high androgen levels usually in blood); 

  • Visible polycystic ovaries on ultrasound. 

Since only two signs are necessary, PCOS can present differently across individuals. For example, one person might experience irregular cycles and acne without ovarian cysts, while another may have polycystic ovaries visible on ultrasound with few outward symptoms.

PCOS treatment varies based on factors like age, symptom severity, overall health, and whether you want to become pregnant. It typically begins with lifestyle changes, such as weight management through diet and exercise. For symptoms such as irregular cycles, acne, and excess hair, combined hormonal contraceptives are the primary medical choice.

For women trying to conceive, oral fertility medications are used to induce ovulation, and the insulin-sensitizing drug metformin is a standard therapy for both metabolic and reproductive concerns. Your doctor might also suggest spironolactone for managing PCOS. Although not initially designed for PCOS, spironolactone helps because it can treat the manifestations of a related hormonal imbalance. It has become a cornerstone of therapy for managing the condition's androgen-related effects.

What Is Spironolactone?

Spironolactone is medically classified as a potassium-sparing diuretic and an aldosterone receptor antagonist. Its primary, FDA-approved uses are for treating high blood pressure, heart failure, and edema (fluid retention). In these capacities, it helps the body eliminate excess salt and water while retaining potassium.

Spironolactone is also an anti-androgen, which means it can block the effects of androgens, making it beneficial for women diagnosed with PCOS. In about 80% of PCOS cases, those affected have hyperandrogenism, meaning they produce more androgen hormones than usual.

Because hyperandrogenism is a primary driver of many distressing PCOS symptoms, spironolactone has proven to be an invaluable tool. By influencing hormones, fluid balance, and potassium levels, this PCOS medication, spironolactone, addresses the root hormonal cause of symptoms like cystic acne and hirsutism.

How Does Spironolactone Work for PCOS?

The effectiveness of spironolactone PCOS treatment lies in its dual-action anti-androgenic mechanism. This mechanism clarifies why it offers relief from some of the most visible and frustrating symptoms of PCOS.

Androgens, such as testosterone, bind to specific receptors on cells in the skin and hair follicles to exert their effects. Spironolactone works by blocking these receptors, preventing testosterone from activating them, which helps reduce acne, unwanted hair growth, and scalp hair loss. Additionally, it mildly inhibits enzymes that produce androgens in the adrenal glands and ovaries, further lowering circulating androgen levels.

By addressing hyperandrogenism, spironolactone targets a key driver of PCOS symptoms. Living with PCOS can be unpredictable, complex, and confusing. If you want to learn more about hormone changes throughout your cycle and how PCOS might affect you, consider using a hormone tracker. Mira’s Hormone Monitor, along with the Mira App and Wands, can measure estrogen and progesterone metabolites in urine (E3G and PdG), as well as LH and FSH fluctuations, which are essential for understanding hormone-related issues. This data can provide valuable insights into your hormonal patterns, helping you and your doctor tailor your management plan.

Common Benefits of Spironolactone in PCOS

When prescribed and monitored correctly, the relationship between PCOS and spironolactone can lead to significant improvements in symptoms and overall wellbeing. The benefits primarily relate to its anti-androgenic effects.

Benefit

Effect

Acne Reduction

Reduces hormonal acne by lowering oil production.

Less Excess Hair (Hirsutism)

Slows the growth of coarse, dark hair. New growth becomes finer. 

Slowed Scalp Hair Loss

Helps halt or slow the progression of androgen-driven female pattern hair thinning.

Improved Quality of Life

Boosts self-esteem by reducing the visible symptoms of PCOS.

For those looking to support their treatment with a holistic approach, PCOS supplements can be beneficial. Formulations designed for hormone balance, acne reduction, and metabolic support can complement medical treatments and lifestyle changes.

Spironolactone PCOS Weight Loss: Myth or Reality?

When it comes to spironolactone, PCOS, and weight loss, a common question is whether the medication can help, a challenge for many women with the condition. The answer is nuanced: spironolactone is not a weight loss medication. It does not cause fat loss.

Because it acts as a diuretic, it can cause short-term weight loss through water loss, which doesn't reflect changes in body composition. Sustainable weight management for PCOS requires a balanced diet, regular exercise, and stress management. Sometimes, medications like metformin are prescribed to help with insulin resistance.

Remember, embracing gentle, nurturing habits can genuinely make a difference in managing PCOS. The Mira Fertility Tea is a soothing blend that not only helps alleviate stress but also promotes better digestion and supports hormonal balance. It’s a thoughtful addition to a healthy lifestyle and can be a comforting companion on your journey to feeling your best.

Spironolactone Side Effects in PCOS

Most women tolerate spironolactone well, especially at the doses typically prescribed for PCOS. However, like any medication, it can cause side effects.

Common Side Effects:

  • Frequent Urination: As a diuretic, this is the most expected side effect.

  • Dizziness or Lightheadedness: This can occur due to changes in blood pressure or dehydration.

  • Breast Tenderness or Enlargement: This is common during hormonal shifts.

  • Irregular Menstrual Periods: Spotting or changes in cycle length can occur, especially in the first few months.

  • Headaches and Fatigue: These are also possible as your body adjusts to the medication.

  • Mood Changes: Some individuals may experience mood shifts.

Serious (but Less Common) Risks:

  • High Potassium (Hyperkalemia): This is the most significant risk. Spironolactone is "potassium-sparing," meaning it can cause potassium levels to rise in the blood. Hyperkalemia can be dangerous and affect heart rhythm. Your doctor will monitor your potassium levels with blood tests, especially when you start the medication or change your dose.

  • Kidney Issues: The medication should be used with caution in those with pre-existing kidney problems.

  • Dehydration and Electrolyte Imbalance: Due to its diuretic effect.

Special Warning: Spironolactone is not safe during pregnancy or while breastfeeding. It can cause birth defects in a developing male fetus by interfering with normal sexual development. Effective contraception is mandatory for sexually active women of childbearing age taking this medication. High potassium levels can cause heart rhythm issues, so your doctor should evaluate your potassium levels both before and after starting spironolactone for treating PCOS.

Spironolactone for PCOS Dosage and Safety Considerations

The ideal spironolactone dose for PCOS varies from person to person and is determined by a healthcare provider based on the severity of symptoms, patient tolerance, and other health factors.

Dosage Range

Frequency

Typical Use

Notes

25-50 mg/day

Once daily

Starting dose for mild symptoms

Often prescribed to assess tolerance before increasing

50-100 mg/day

1-2 times daily

Common therapeutic range

Most widely used for acne, hirsutism, and PCOS symptoms

100-150 mg/day

Split into 2 doses

Moderate to severe symptoms

Requires closer monitoring for side effects and potassium levels

Up to 200 mg/day

Split into 2 doses

The max dose of spironolactone for PCOS is typically 200 mg per day, used under close medical supervision

Rarely used, reserved for resistant symptoms; always requires medical monitoring

A doctor will consider several factors when determining the appropriate spironolactone dosage for PCOS. Safety is the top priority. Key considerations include: 

  • Pregnancy and Breastfeeding: Absolute contraindications.

  • Kidney Function: Requires careful monitoring.

  • Electrolyte Levels: Regular potassium testing is essential.

  • Drug Interactions: Inform your doctor of all other medications you take, including over-the-counter supplements like potassium.

It's important to note that while spironolactone is commonly used and supported by clinical evidence for PCOS, it is prescribed "off-label." This means that the FDA has not officially approved it for this specific use, but doctors can prescribe it based on their professional judgment and scientific evidence of its effectiveness.

Does Spironolactone Help With PCOS? Results and Timeline

Yes, spironolactone is a highly effective medication for managing the androgen-related symptoms of PCOS. However, it is not a cure for PCOS itself and does not address the metabolic aspects of the condition, such as insulin resistance.

How Long Does It Take for Spironolactone to Work?

Patience is key when starting spironolactone, as results are not immediate.

  • Acne: Improvement is often seen within 3 months of consistent use.

  • Hirsutism and Hair Loss: Because hair grows slowly, it can take 6 months or longer to see noticeable changes.

Alternatives and When to Talk to Your Doctor

It's important to remember that spironolactone is just one of several medical options, and the best approach is always personalized to your specific health profile and goals. PCOS supplements can serve as an additional treatment for symptom relief. Consulting your doctor is crucial to determine the right course, especially if you're trying to conceive, are pregnant, or unable to tolerate spironolactone.

Treatment Option

Primary Mechanism

Key Symptoms Treated

Common Considerations/Side Effects

Spironolactone

Anti-androgen

Acne, hirsutism, hair loss

Frequent urination, high potassium risk, and not safe in pregnancy

Oral Contraceptives

Suppress ovulation, increase SHBG

Irregular cycles, acne, hirsutism

Mood changes, blood clot risk, and masks underlying cycle issues

Metformin

Insulin sensitizer

Insulin resistance and irregular cycles may aid weight management

GI upset (nausea, diarrhea), B12 deficiency risk

Topical Treatments

Localized action

Acne (retinoids, antibiotics), hair loss (minoxidil), unwanted hair (eflornithine)

Skin irritation: effects are localized and they resolve when treatment is discontinued


For women who prefer alternatives to medication, a hormone health practitioner can provide expert recommendations to help manage PCOS through lifestyle and other non-pharmacological methods. 

To gain a clearer picture of your own cycle, tools like the Clarity Kit offer a comprehensive overview of your hormonal health, providing insights that empower you to make more informed decisions about your wellbeing journey.

Conclusion: The Role of Spironolactone in PCOS Care

Spironolactone is an effective anti-androgen medication that helps manage dermatological symptoms of PCOS, such as acne, hirsutism, and hair loss. While it can improve these conditions, it is not a cure for PCOS and does not address metabolic issues like insulin resistance. Careful medical supervision is necessary due to potential side effects, and it should not be taken during pregnancy.

Consulting a healthcare provider can help you determine if spironolactone is suitable for your health goals and how it fits into a comprehensive management plan for PCOS. Your journey with this condition is unique, and finding the proper support is crucial.

Frequently Asked Questions

Can I take spironolactone at night?

Yes, but it is best to take spironolactone once daily in the morning to avoid waking up at night to pee.

What are some alternatives to spironolactone for treating PCOS symptoms such as hirsutism and acne?

Alternatives to spironolactone include oral contraceptive pills (OCPs) with anti-androgenic progestins (e.g., drospirenone, norgestimate), anti-androgen medications (flutamide, bicalutamide), and eflornithine cream. Lifestyle changes, including diet and exercise, are essential, and metformin can help with insulin resistance. 

What kind of medicine can I take for PCOS relief that won't cause fluid retention?

For PCOS relief without fluid retention, doctors may prescribe spironolactone, a potassium-sparing diuretic. Other treatments include oral contraceptives and insulin sensitizers like metformin, though some older hormonal medications may increase fluid retention.

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