… in oral progesterone for preterm birth prevention in general. One recent review that included
oral progesterone … evaluated progesterone efficacy by route; thus, oral progesterone was …

… overall, vaginal progesterone reduced preterm birth <34 (OR … preterm birth, vaginal
progesterone reduced preterm birth <… 17α-hydroxyprogesterone caproate reduced preterm birth …

… Studies conducted in the past using progestins have shown a reduction in the incidence
of preterm birth of up to 50%. To our knowledge no study has been conducted using oral …

… More adverse effects with oral progesterone therapy compared with placebo were reported,
… oral progesterone with other available therapies for the prevention of recurrent preterm birth …

… preterm delivery at <37 weeks, into a progesterone group (receiving 100 mg oral micronized
progesterone, six‐… The rate of spontaneous preterm delivery was the primary outcome. …

… Oral progesterone has not been used for prevention of PTB because of its first-pass
hepatic metabolism, lack of efficacy data, high side-effect profile, extreme variability in plasma …

… However, a large proportion of preterm births still is not currently preventable. The aim of …
use of oral progesterone before 14 + 0 weeks of gestation can prevent preterm birth better than …

… preterm birth, progesterone was associated with a significant reduction in preterm birth …
One study 43 compared an oral progestogen with placebo but presented outcomes only as …

… to that of progesterone secreted by the corpus luteum in the first trimester of pregnancy and
later by the placenta [92]. Natural progesterone can be administered orally, vaginally, rectally …

… of progesterone to prevent preterm birth (PTB). Using the terms “preterm or premature” and
“progesterone… Only 1 metaanalysis included a study with oral (micronized) progesterone, and …