This is a multi-center study to evaluate the effects of SCE-B on nocturnal vasomotor symptoms. Study duration will be approximately 16 weeks; this includes a 4-week screening period and approximately 5 scheduled clinic visits. Participants will receive one of two strengths of SCE-B tablets plus matching placebo or placebo only, and will have a physical and gynecological exams that may include transvaginal ultrasound, endometrial biopsy and a pap smear. Participants will be asked to wear a monitoring device for a portion of the study and be asked to complete a daily dairy.