Yes, there are several medications used to treat PCOS, and the right one depends on which symptoms you’re dealing with. PCOS affects people differently, so treatment isn’t one-size-fits-all. Some medications target irregular periods and acne, others address insulin resistance or excess hair growth, and a separate category exists for those trying to get pregnant. Here’s what’s available and how each option works.
Birth Control Pills: The First-Line Option
Combined oral contraceptive pills are the first-line pharmacological treatment for two of the most common PCOS complaints: irregular periods and high androgen levels (the hormones responsible for acne, oily skin, and excess hair growth). International guidelines from 2023 recommend lower-dose formulations with fewer side effects, though no single brand is preferred over another.
The pill works by suppressing ovarian hormone production, which lowers the androgen levels driving skin and hair symptoms. It also provides a regular withdrawal bleed each month, which protects the uterine lining from the thickening that can happen when periods are absent for long stretches. For many people with PCOS, the pill is the starting point before considering anything else.
Metformin for Insulin Resistance
Metformin is recommended primarily for the metabolic side of PCOS. Current guidelines suggest it for anyone with PCOS and a BMI of 25 or above to improve insulin resistance, blood sugar, and cholesterol markers. It may also be considered for those at a lower BMI, though the evidence there is more limited.
Doses typically range from 1,000 to 2,500 mg per day, and doctors often start low and increase gradually. Research shows metformin can significantly reduce fasting insulin levels, particularly in non-obese patients (BMI under 30). It also lowers testosterone levels, with a greater effect in leaner individuals. Beyond metabolic improvements, some people notice more regular cycles on metformin, though it’s not as reliable for that purpose as the pill.
The main downside is gastrointestinal discomfort. Nausea, diarrhea, bloating, and stomach pain are common, especially early on. These side effects can be significant enough that some people stop taking it. Starting at a low dose and increasing slowly helps, and an extended-release version tends to be gentler on the stomach than the standard form.
Anti-Androgens for Hair Growth and Acne
When birth control pills alone aren’t enough to control excess facial or body hair, anti-androgen medications become the next step. Guidelines recommend trying the pill or cosmetic treatments (like laser hair removal) for at least six months before adding an anti-androgen, and effective contraception is required alongside these drugs because they can cause birth defects.
Spironolactone is the most commonly prescribed anti-androgen in many countries, typically at 100 to 200 mg daily. It blocks the effects of androgens at the skin level, slowing hair growth and reducing its coarseness over time. Results take months to become visible. In early studies, women noticed slowed growth rates and thinner hair shafts after about six months of use.
Cyproterone acetate is another option, available in some countries as part of a specific birth control pill containing 2 mg of the drug combined with estrogen. It works by blocking androgen receptors in the skin and reducing androgen production from the ovaries simultaneously. Higher doses of 50 to 100 mg can be prescribed in more severe cases, given during the first half of the menstrual cycle. This medication is particularly effective for PCOS-related acne because it targets multiple points in the androgen pathway at once.
Topical Options for Facial Hair
A prescription cream containing eflornithine can be applied directly to the face twice daily, at least eight hours apart. It slows the enzyme responsible for hair growth at the follicle. Studies show it reduces facial hair regrowth by about 17% compared to untreated skin after six months. That may sound modest, but combined with laser treatments or other hair removal methods, it can make a noticeable difference in how quickly hair grows back between sessions. Hair returns to its previous growth rate once you stop using the cream.
Fertility Medications
If you’re trying to conceive, the treatment approach shifts entirely. Birth control pills and anti-androgens are off the table, and the focus moves to ovulation induction.
Letrozole is now the first-line fertility medication for PCOS. It works by temporarily lowering estrogen, which signals the brain to ramp up the hormones that trigger ovulation. In a randomized trial, letrozole produced ovulation in about 84% of patients, and among those who ovulated, 70% became pregnant. The clinical pregnancy rate per patient was 61%, compared to 43% with the older standard, clomiphene citrate. Live birth rates trended higher with letrozole as well (roughly 49% vs. 35%), though the difference didn’t quite reach statistical significance in that particular study.
Clomiphene citrate, once the go-to option, is now considered second-line. It can be used alone or in combination with metformin. Injectable hormones called gonadotropins and a minor surgical procedure called ovarian drilling are also second-line options for people who don’t respond to oral medications. IVF is reserved as third-line therapy when other approaches have failed.
GLP-1 Medications for Weight and Metabolism
GLP-1 receptor agonists, the class of drugs that includes liraglutide and semaglutide, are generating significant interest for PCOS. A meta-analysis of randomized controlled trials found these medications reduced waist circumference by about 5 cm, lowered BMI by roughly 2.4 points on average, and also decreased total testosterone levels in women with PCOS and obesity. Semaglutide showed a particularly large BMI reduction of about 4.3 points.
These medications aren’t yet part of the standard PCOS treatment guidelines, but the metabolic and hormonal improvements they produce overlap directly with what PCOS treatment aims to achieve. About 44% of participants in the trials experienced mild side effects like nausea and abdominal pain, which are consistent with the known profile of this drug class.
Inositol Supplements
Inositol is an over-the-counter supplement that comes up frequently in PCOS discussions. Two forms matter: myo-inositol and D-chiro-inositol. Both improve how the body uses insulin, but they have opposite effects on the ovaries. The most studied formulation combines the two in a 40:1 ratio (myo to D-chiro), which showed the best results in experimental studies for reversing PCOS signs compared to other ratios.
However, the 2023 international guidelines note that metformin has greater efficacy than inositol for metabolic outcomes and that inositol offers “limited clinical benefits” in PCOS. It may be worth trying if you can’t tolerate metformin or prefer starting with a supplement, but the evidence behind it is weaker than what supports prescription options.
How Medications Are Typically Combined
Most people with PCOS end up on more than one treatment because the condition affects multiple systems. A common combination might be the pill for period regulation and acne control, plus metformin for insulin resistance, plus spironolactone if hair growth remains a problem after six months on the pill. If weight is a major factor, a GLP-1 medication or structured weight management program might be layered in as well.
The specific combination depends on your primary symptoms, whether you’re trying to conceive, your weight, and how you respond to initial treatments. What works well for one person with PCOS may be completely wrong for another, which is why treatment tends to be adjusted over time rather than set from the start.