Research

Hormonal

Letrozole is the first-line pharmacological treatment for anovulatory infertility in women with PCOS, offering higher live birth and clinical pregnancy rates compared to Clomiphene Citrate (CC).

If you have PCOS and are struggling with infertility due to lack of ovulation, Letrozole is now the preferred first medication. It works better than the older drug Clomiphene (CC) and has a lower risk of twins and complications. It is often used off-label, so discuss this with your doctor.

GoodSupportsHIGH confidence
Letrozole is considered first-line treatment for women with PCOS and anovulatory infertility. Letrozole followed by timed intercourse improves live birth rate and clinical pregnancy rates compared with CC with no difference in rates of ovarian hyperstimulation syndrome (OHSS) and reduced multiple pregnancy.
Adriana C. H. Neven et al. · Seminars in Reproductive Medicine · 2018

Why this rating

Based on comparative studies showing superiority over CC.

Source

A Summary on Polycystic Ovary Syndrome: Diagnostic Criteria, Prevalence, Clinical Manifestations, and Management According to the Latest International Guidelines

Adriana C. H. Neven et al. · Seminars in Reproductive Medicine · 2018

DOI 10.1055/s-0038-1668085

narrative_reviewCited 196×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →