Hi, thank you for query, susten tab can be given orally and vaginally accordingly to need. Women take susten tab by mouth for inducing menstrual periods; and treating abnormal uterine bleeding associated with hormonal imbalance, and severe symptoms of premenstrual syndrome (PMS). Susten tab is also used in combination with the hormone estrogen to “oppose estrogen” as part of hormone replacement therapy. If estrogen is given without progesterone, estrogen increases the risk of uterine cancer. susten gel is sometimes used inside the vagina to expand the cervix (cervical ripening), treat breast pain in women with noncancerous breast disease, and to prevent and treat abnormal thickening of the lining of the uterus (endometrial hyperplasia). susten tab is also used intravaginally or by injection for treating infertility and symptoms of (PMS).