Finasteride for Women: Can Women Take It for Hair Loss?
Last reviewed on 6 August 2026. We review our treatment guides every six months to keep them accurate.
If you are looking into finasteride for women, the most important thing to know first is that finasteride is not licensed for women in the UK, and it must not be used by anyone who is or could become pregnant. So can women take finasteride for hair loss? In short, it is not a routine treatment. Finasteride is a tablet licensed for men, and any use in women is off-label and a specialist decision, usually considered only for women who are past the menopause.
This guide explains why finasteride carries such a strong pregnancy warning, whether it actually works for female pattern hair loss, and the treatments women are more commonly offered instead. It is general information rather than medical advice, so please speak to your GP or a dermatologist about your own situation.
Is finasteride licensed for women?
No. In the UK, finasteride is licensed for men with male pattern hair loss, at a 1mg dose, and at a higher 5mg dose for an enlarged prostate. It is not licensed or approved for women for any type of hair loss. The manufacturer's product information states plainly that finasteride is contraindicated for use in women, and the NHS notes it is generally not recommended for women or children.
Finasteride works by blocking the enzyme 5-alpha reductase, which lowers levels of dihydrotestosterone (DHT), a hormone involved in pattern hair loss. That is the same mechanism as in men, but the evidence and the safety picture in women are very different, which is why it is not a standard women's treatment. You can read more about how the drug works in our guide to finasteride for hair loss.
Can women take finasteride at all?
Not as a routine option. Because it is not licensed for female hair loss, any use in women is off-label, meaning a specialist is prescribing a medicine outside the conditions it was approved for after weighing up the alternatives. In practice this is generally considered only for women who are past the menopause, and occasionally for younger women who are using reliable contraception, always under specialist care. It is never a first-line choice, and it is not something to buy online and take on your own.
The pregnancy warning: the most important safety point
Finasteride can cause abnormalities of the external genitalia in a male foetus, so must not be taken by anyone who is or could become pregnant.
This is the single biggest reason finasteride is not a routine treatment for women. Because DHT is needed for the normal development of a male baby, finasteride can cause abnormalities of the external genitalia in a male foetus if it is taken during pregnancy. For this reason the product information classes it as contraindicated in women because of the risk in pregnancy, and it must not be taken by anyone who is pregnant or who might become pregnant.
The caution goes a step beyond swallowing a tablet. Women who are or could become pregnant are advised not to handle crushed or broken finasteride tablets either, because a small amount can be absorbed through the skin; intact tablets are coated to prevent this. Finasteride should also be avoided while breastfeeding, as there is no research to show it is safe.
This teratogenic risk is about a woman taking the drug herself. A separate and common question is whether a man taking finasteride can affect a pregnancy, which we cover in our guide to finasteride when trying for a baby.
Does finasteride work for female hair loss?
The honest answer is that the evidence in women is limited and mixed, and much weaker than it is in men. The best-known trial, a 12-month randomised controlled study of finasteride 1mg a day in 137 postmenopausal women, found no benefit over a dummy treatment. Some later studies using higher doses, or in women with signs of raised androgens, have been more encouraging, but these were smaller and of lower quality, and there are no good randomised trials of the higher doses in women. So finasteride cannot be assumed to work for women the way it does for men, and where a specialist does consider it, it is on a case-by-case basis rather than as a proven treatment.
Side effects and safety warnings
Alongside the pregnancy risk, finasteride carries other warnings. In 2024 the UK medicines regulator, the MHRA, introduced patient alert cards, and in 2026 it strengthened the warnings further, because finasteride is associated with depression, suicidal thoughts and sexual dysfunction, and these effects may persist after the medicine is stopped. Much of this reported data comes from men taking finasteride for hair loss, but the warnings are relevant to anyone taking it. Other effects reported in women can include breast tenderness and changes to periods. You can read the current position in the MHRA's drug safety update, and any suspected side effect can be reported through the MHRA Yellow Card scheme. Anyone who develops low mood or distressing thoughts should stop and seek medical advice promptly.
What women are more often offered instead
Because finasteride is not licensed for women and carries these risks, most women are offered other treatments first. The one with the strongest evidence is minoxidil, a lotion or foam applied to the scalp, which is available over the counter in versions made for women; our guide to minoxidil for women covers how it is used. Where hair loss is linked to raised androgens, a specialist may consider an anti-androgen such as spironolactone, which is more commonly used in women than finasteride, though it too is off-label. These and the wider group of DHT-lowering treatments are compared in our guide to DHT blockers for women.
Just as important is checking why the hair is thinning in the first place. Female hair loss has many possible causes besides pattern hair loss, including low iron, thyroid problems and polycystic ovary syndrome (PCOS), and several are treatable in their own right. It is usually worth asking your GP to look into these, sometimes with simple blood tests, before assuming DHT is the problem.
Finasteride for postmenopausal women
Where finasteride is used in women at all, it is most often considered for those who are past the menopause, when pregnancy is no longer a possibility and the main safety concern falls away. Even then the evidence is limited, the best trial in postmenopausal women was negative, and it remains an off-label, specialist-led choice rather than a standard treatment. It is a conversation to have with a dermatologist who can weigh it against better-evidenced options.
Frequently asked questions
Can women take finasteride for hair loss?
It is not a routine treatment. Finasteride is not licensed for women in the UK, and it must not be used by anyone who is or could become pregnant. It is sometimes prescribed off-label under specialist care, usually for women past the menopause, but it is never a first-line option.
Why can't women take finasteride in pregnancy?
Because it can cause abnormalities of the external genitalia in a male baby if it is taken during pregnancy. For this reason it is contraindicated in women who are or could become pregnant, and women should not even handle crushed or broken tablets.
Does finasteride work for female pattern hair loss?
The evidence is limited and mixed. The best-known trial, in postmenopausal women, found no benefit over a dummy treatment, and there are no good trials of higher doses in women. It cannot be assumed to work the way it does in men.
What can women use instead of finasteride?
Minoxidil applied to the scalp has the strongest evidence and is usually the first choice for women. A specialist may also consider an anti-androgen such as spironolactone. It is worth checking for causes such as low iron or thyroid problems first.
Is topical finasteride safer for women?
Topical finasteride is designed to act mainly on the scalp with less reaching the bloodstream, but it is still not licensed for women, less is known about it, and the pregnancy warning still applies. It is not a way around the safety issues, and any use should be a specialist decision.
The bottom line
Finasteride is a men's hair loss medicine that is not licensed for women and carries a serious risk in pregnancy, so it is not a routine treatment for female hair loss. The evidence in women is weak, the best trial was negative, and safer, better-evidenced options such as minoxidil are usually tried first. If you are losing hair, the most useful step is to see your GP or a dermatologist, who can check what is behind it and talk you through the treatments that are right for you.
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