AIM: To investigate the effect of empiric use of luteal phase progesterone supplementation to improve endometrial receptivity in women. Learn about Clomid (Clomiphene) may treat, uses, dosage, side effects, drug biopsy, assay of urinary estrogen, or from bleeding in response to progesterone). Clomid is also known as clomiphene citrate. It's an oral medication that is often used to treat certain types of female infertility. Clomid works by making the body.