Mifepristone vs Misoprostol

The Investigator team hypothesizes that in a randomized trial comparing mifepristone-alone or misoprostol-alone for cervical preparation for procedural abortions at 12 to 16 weeks in hospital-based care, the proportion of patients who achieve successful cervical dilation will be different between the study groups.

Inclusion Criteria: * English or Spanish-speaking * Capacity to consent * Seeking induced abortion of a singleton pregnancy between 12 weeks, 0 days and 16 weeks, 6 days (based on age at day of surgery) Exclusion Criteria: * History of more than two prior Cesarean deliveries * Sonographic evidence of placenta previa * Sonographic concern for morbidly adherent placenta * Prior obstetric hemorrhage requiring transfusion * Obstructive cervical or lower uterine segment fibroid * Current therapeutic anticoagulation use * Cerclage in situ * History of more than one prior cervical excisional procedure * BMI greater than 50 kg/m\^2