Final answer:
Evening primrose oil is suggested to ripen the cervix in pregnant women. It contains a fatty acid that may have a softening effect on the cervix, making it more favorable for labor.
Step-by-step explanation:
Evening primrose oil has been shown to perform the action of ripening the cervix in pregnant women. The oil contains a fatty acid called gamma-linolenic acid (GLA), which is thought to have a softening effect on the cervix, making it more favorable for labor. This complementary therapy is often recommended for women who are near their due date and want to help prepare their bodies for childbirth.
Studies have suggested that taking evening primrose oil orally can help to ripen the cervix and potentially reduce the need for medical induction of labor. However, it's important to note that more research is needed to fully understand the effectiveness and safety of this treatment.