Vaginal Progesterone Formulations and Clinical Guideline Recommendations
Available Formulations and Efficacy
- The American College of Obstetricians and Gynecologists recommends using either 90-mg vaginal progesterone gel or 200-mg micronized progesterone suppository daily for prevention of preterm birth in women with short cervix (≤20 mm) from diagnosis until 36 weeks 1, 2, 4
- The use of vaginal progesterone for short cervix indication is currently off-label and requires patient counseling, as stated by the American Journal of Obstetrics and Gynecology 3
- Both formulations (90 mg gel and 200 mg capsules) have been studied in randomized trials with demonstrated efficacy for preventing preterm birth in women with short cervix 1, 2, 3