Introduction:

Insulin resistance is highly relevant in the pathogenesis of polycystic ovary syndrome, which is why it is common to use insulin sensitizers. Metformin has various therapeutic purposes and is the most recommended. During pregnancy, it plays a role in reducing the risk of miscarriage, pregnancy-induced hypertension, macrosomia, cesarean section, and neonatal hypoglycemia. With less consistent results, it also participates in reducing the risk of gestational diabetes. However, there are concerns about its long-term safety.

Objective:

To update the state of the art on the use of metformin during pregnancy in women with polycystic ovary syndrome. Methods: A bibliographic review was carried out where 57 articles obtained from the Google Scholar, Medline, Pubmed, SciELO databases were consulted.

Conclusions:

Treatment with metformin is easier, cheaper and less "disturbing" than insulin. Prescription and adherence are simpler, which has contributed to the fact that metformin is used in clinical practice during pregnancy with increasing frequency. The current position of the scientific community accepts metformin as a valid treatment alternative in women with polycystic ovary syndrome during pregnancy, but recommends careful observation of its long-term safety and increasing evidence.

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