For a patient with infertility due to chronic anovulation and normal hormone levels, which drug is the first choice for treatment?

The first choice for treating infertility in a patient with chronic anovulation and normal hormone levels is Clomiphene citrate. This medication works by stimulating the hypothalamus to release more gonadotropin-releasing hormone (GnRH), which in turn prompts the anterior pituitary gland to release follicle-stimulating hormone (FSH) and luteinizing hormone (LH). This cascade promotes ovarian follicle development and ovulation in women who have normal endogenous hormone levels but are experiencing anovulation.

Clomiphene citrate is particularly effective for conditions such as polycystic ovary syndrome (PCOS), where patients may face challenges with ovulation due to hormonal imbalances. By enhancing the body's natural reproductive hormone pathways, it provides a well-tolerated and effective means to help induce ovulation, thereby increasing the chances of conception.

Other options have specific uses but are not the first-line treatments for this scenario. Dehydroepiandrosterone sulfate primarily serves as an androgen precursor and is not utilized in treating chronic anovulation. Bromocriptine is typically indicated for conditions associated with hyperprolactinemia, which is not relevant in this case of normal hormone levels. Human menopausal gonadotropin provides