Preterm birth, typically defined as birth between 20 0/7 weeks and 36 6/7 weeks of gestation, is a major cause of neonatal morbidity, and rates of preterm birth continue to rise. Antenatal corticosteroids have demonstrated benefit for reduction of morbidities and mortality associated with preterm birth, with few observed maternal risks. As such, antenatal corticosteroids have become the standard of care for treating pregnant people at risk of preterm birth. Tocolytics may be beneficial in temporarily slowing uterine contractions to prolong pregnancy long enough for the administration of corticosteroids or stabilization and transfer of a parturient in preterm labor.