The active substance of the drug Utrozhestan® is progesterone, which is identical to the natural hormone of the ovarian corpus luteum. By binding to receptors on the surface of cells of target organs, it penetrates into the nucleus, where, by activating DNA, it stimulates RNA synthesis. Promotes the transition of the uterine mucosa from the proliferation phase caused by the follicular hormone estradiol to the secretory phase, and after fertilization to the state necessary for the development of a fertilized egg. Reduces the excitability and contractility of the muscles of the uterus and fallopian tubes. Promotes the formation of normal endometrium. Stimulates the development of the terminal elements of the mammary gland and induces lactation.
