ABSTRACT
A 26-year-old woman visited our hospital complaining of infertility. Initially treatment was given based on clomiphene for induction of ovulation. However, she suffered from ovarian hyperstimulation syndrome (OHSS) due to the clomiphene, accompanied by abdominal pain. Unkei-to was decided on as the best mode of treatment since clomiphene could not be continued. The patient's basal body temperature (BBT) returned to its biphasic cycle. Three months later, natural pregnancy occurred that resulted in the birth of a healthy boy by normal delivery.<br>Unkei-to is frequently given for a variety of gynecological disorders, such as irregular menstruation, dysmenorrhea, discharge, climacteric disturbance, etc.<br>Although induction of ovulation is often a necessary and effective infertility therapy, multiple pregnancies and OHSS can be problematic. The present case suggests that Unkei-to may be effective for infertility involving clomiphene-induced OHSS