Clomiphene citrate + Human menopausal gonadotropin

Clomiphene citrate + Human menopausal gonadotropin (CC/hMG) is a **combination drug protocol** used in assisted reproductive technologies, specifically for **ovarian stimulation** in patients undergoing in vitro fertilization (IVF) [1]. The combination utilizes **clomiphene citrate (CC)**, an oral selective estrogen receptor modulator, and **human menopausal gonadotropin (hMG)**, which contains both follicle stimulating hormone (FSH) and luteinizing hormone (LH) [1]. The primary goal of this protocol is to **stimulate the development of multiple ovarian follicles** for subsequent egg retrieval in IVF procedures. Research indicates that the CC/hMG protocol may be particularly useful for patient populations who have **previously failed IVF attempts** using other protocols, such as those involving gonadotropin-releasing hormone analogs (GnRH-a) or exogenous gonadotropins alone [1]. A notable advantage is that it may require **lower doses of hMG** compared to some other stimulation protocols, potentially offering cost-effectiveness [5]. Studies have shown that while the CC/hMG combination might result in the retrieval of **fewer oocytes** compared to other protocols, it can still lead to **successful pregnancies** in appropriately selected patients [1]. Variations in the CC/hMG protocol exist and have been studied, showing differences in factors like serum estradiol response and fertilization rates, although overall outcomes such as follicular development, oocyte recovery, embryo transfer rates, and pregnancy rates did not show significant differences across various CC/hMG methods [2]. This combination has also been incorporated into 'soft' ovulation induction protocols, sometimes used in conjunction with GnRH antagonists [4]. When compared to protocols like medroxyprogesterone acetate (MPA) with hMG, the CC/hMG approach was found to significantly reduce the required total dose and duration of hMG treatment [5]. In summary, the CC/hMG combination is an **alternative ovarian stimulation protocol** that holds importance for patients who may not have responded optimally to standard IVF protocols.

Other names

CC/hMG protocolCC/hMG combination