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Arch Gynecol Obstet. 2010 Oct;282(4):439-43. doi: 10.1007/s00404-010-1497-y. Epub 2010 May 16.

Comparison of metformin and clomiphene citrate therapy for induction of ovulation in the polycystic ovary syndrome.

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1
Department of Obstetrics and Gynecology, Haseki Education and Research Hospital, Istanbul, Turkey.

Abstract

OBJECTIVE:

To compare the efficacy of metformin and clomiphene citrate (CC) therapies for ovulation induction in anovulatory infertile women with polycystic ovary syndrome (PCOS).

METHODS:

A total of 69 consecutive infertile, anovulatory women with PCOS were enrolled in this prospective, non-randomized trial. The women were prescribed either 1,700 mg/day metformin or CC with a starting dose of 50 mg/day up to 150 mg/day for a period of six consecutive cycles.

RESULTS:

Metformin and CC groups were followed for a total of 136 and 94 cycles, respectively. Metformin group had lower rates of ovulation when compared with CC group (32.3 vs. 60.6%, respectively; p = 0.004). There was no statistical difference in pregnancy rates per cycle between the treatment groups (8 vs. 11.7%, respectively; p = 0.33) leading to similar cumulative pregnancy rates (36.6 vs. 35.4%, respectively; p = 0.45). No difference was observed among the abortion rates (10 vs. 10%, respectively; p > 0.05) between the groups.

DISCUSSION:

Although metformin and CC are two effective first-line approaches for improving pregnancy rates in anovulatory PCOS women, CC is associated with higher rates of ovulation.

PMID:
20473763
DOI:
10.1007/s00404-010-1497-y
[Indexed for MEDLINE]
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