Sildenafil Vaginal Gel Co-treatment With Clomiphene Citrate in Infertile Women With Thin Endometrium

Clomiphene citrate only arm: Patients received Clomiphene citrate induction ( (in a dose of 100 mg/ day in two divided doses starting from day 3 of the cycle for 5 days) for the 6th cycle. A gel base, without medicament (vehicle only), was applied vaginally in a dose of 5 gm twice per day, from cycle day 8 to the day of HCG injection. Sonographic assessment of endometrial thickness together with Uterine artery Doppler evaluation were done in the late proliferative phase ( Day of HCG injection).

In addition to clomiphene citrate treatment as the previous group, women in the second arm were prescribed sildenafil vaginal gel in a dose of 5 g gel applied vaginally twice daily from cycle day 8 to the day of HCG injection. The sildenafil vaginal gel consists of sildenafil acetate as a medicament loaded on an in situ gelling system based on two polymers: Pluronic p-127, and Hydroxy Ethyl Cellulose.The gel was prepared in collaboration with the department of pharmaceutics, faculty of Pharmacy, Assiut University. Sixty grams of gel were prepared in tubes and every patient was given 10 applicators like that used for administration of vaginal antimycotic creams to use them for applying the gel.