Related Experiment Video
Updated: May 8, 2026

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
Published on: September 16, 2021
Clomiphene citrate co-treatment with low dose urinary FSH versus urinary FSH for clomiphene resistant PCOS:
Mohamad E Ghanem1, Laila A Elboghdady, Mohamad Hassan
1Mansoura Integrated Fertility Center, Mansoura, Egypt.
Purpose:
The aim of this study was to examine the effect of clomiphene citrate [CC] co-administration during the use of exogenous low-dose urinary FSH [uFSH] for induction of ovulation in CC-resistant infertile PCOS women.
Methods:
In a randomised controlled setting, 174 CC-resistant infertile PCOS women were randomized into two parallel groups; Group I received CC 100 mg/day for 5 days plus uFSH 37.5 IU/day while group II received only uFSH 37.5 IU /day. Subsequent increments of uFSH by 37.5 IU/day were made according to response. Primary outcome was ovulation rate. Secondary outcomes were clinical pregnancy rates, number of follicles, endometrial thickness, and gonadotropins consumption.
Results:
Our results have demonstrated that group I compared to group II had significantly higher ovulation rate per intention to treat [ITT] [72.4 % vs. 34.2 %, p < 0.001]. Clinical pregnancy and live birth rates were comparable between the two groups. Group I consumed significantly lower total FSH dose and needed significantly shorter stimulation duration compared to group II.
Conclusion:
CC co-administered during low dose HP uFSH versus uFSH for CC-resistant PCOS yields significantly higher ovulation rate and less consumption of FSH.