Hair loss treatment during pregnancy

Medical treatment plays an important role in managing hair loss. Depending on the diagnosis, medications may be prescribed before or after a hair transplant—or as a standalone treatment—to help stabilize hair loss and preserve existing hair.

Among the most commonly prescribed medications are finasteride and dutasteride, both of which are effective treatments for androgenetic alopecia. However, because these medications can affect pregnancy and family planning, they must be used with appropriate medical guidance.

Although originally developed to treat benign prostatic hyperplasia (BPH), both medications were found to reduce hair loss and promote thicker hair by lowering levels of dihydrotestosterone (DHT), the hormone primarily responsible for androgenetic alopecia.

Hair loss treatment and pregnancy

Finasteride and dutasteride have well-established safety profiles when prescribed appropriately. However, they are not suitable during pregnancy because they may interfere with the normal development of a male fetus.

For this reason, women who are pregnant, planning pregnancy, or who may become pregnant should not take these medications unless specifically advised by a physician in exceptional circumstances.

Women should also avoid handling crushed or broken tablets of finasteride or dutasteride during pregnancy because the active ingredients can potentially be absorbed through the skin.

What about men trying to conceive?

This is an area where patients often have questions.

Small amounts of finasteride and dutasteride can be detected in semen. Although current evidence suggests that the amount transferred during sexual intercourse is extremely low and is unlikely to pose a risk to a developing fetus, some physicians recommend temporarily discontinuing treatment while actively trying to conceive, particularly in couples with fertility concerns or when taking dutasteride because of its long half-life.

In addition, these medications may slightly affect semen parameters in a small proportion of men. These changes are generally reversible after discontinuing treatment.

Because recommendations vary according to the individual patient and the medication being used, anyone planning a pregnancy should discuss treatment with their physician before stopping or continuing therapy.

Possible side effects

Like all prescription medications, finasteride and dutasteride may cause side effects, although most patients tolerate them well.

Potential side effects include:

• Reduced libido
• Erectile dysfunction
• Ejaculatory changes
• Breast tenderness or enlargement
• Allergic skin reactions (rare)

These side effects occur in only a small percentage of patients and are often reversible after discontinuing treatment or adjusting the dosage under medical supervision.

Patients should never stop or modify their medication without consulting their prescribing physician.

Frequently Asked Questions

Can women take finasteride or dutasteride during pregnancy?

No. Finasteride and dutasteride are contraindicated during pregnancy because they may interfere with the normal development of a male fetus. Women planning pregnancy should also discuss the appropriate timing for discontinuing treatment with their physician before attempting to conceive.

Can men take finasteride or dutasteride while trying to have a baby?

Many men successfully father children while taking these medications. However, because finasteride and dutasteride may affect semen quality in some individuals and small amounts can be detected in semen, patients who are actively planning a pregnancy should consult their physician. Depending on the clinical situation, temporary discontinuation may be recommended, particularly for dutasteride, which remains in the body much longer than finasteride.

How long before trying to conceive should treatment be stopped?

This depends on the medication. Finasteride is generally eliminated relatively quickly, whereas dutasteride has a much longer half-life and may remain in the body for several months. The appropriate washout period should always be determined by the prescribing physician based on the patient’s individual circumstances. médico le indicará cómo proceder, ya que los meses de “lavado” pueden variar en función de la dosis que tome y del medicamento (dutasterida o finasterida).

Dr. Espinosa Custodio works at Instituto Médico del Prado, his hair clinic in Madrid, and performs hair transplants in Mexico, twice a year. If you would like to make an appointment, you can contact us on +34 912 468 664, on WhatsApp +34 627 396 322 or on the contact page of our website. From Mexico you can contact us at +52 55 4590 9909.