Zydro 10mg Tablet contains dydrogesterone, a synthetic progestogen used primarily in the management of various gynecological conditions related to progesterone deficiency. Each tablet delivers 10mg of dydrogesterone, which mimics the action of natural progesterone by binding to progesterone receptors in target tissues. This medication is indicated for the treatment of menstrual disorders such as irregular menstruation, secondary amenorrhea, and dysfunctional uterine bleeding. It is also employed in hormone replacement therapy to support the luteal phase in assisted reproductive techniques and to prevent threatened or habitual miscarriage associated with progesterone insufficiency. Dydrogesterone is well absorbed orally and exhibits minimal androgenic, estrogenic, or glucocorticoid effects, making it suitable for long-term use under medical supervision. The typical dosage and duration of therapy depend on the specific indication and patient response, and treatment should be individualized accordingly. Contraindications include known hypersensitivity to dydrogesterone or any excipients, active thrombophlebitis, and hepatic dysfunction. Common adverse effects are generally mild and may include headache, breast tenderness, and nausea. Patients should consult healthcare providers before initiating therapy to ensure appropriate use and monitoring.