Ibigest SR 300 Tablet contains Progesterone (Natural Micronized) 300 mg, a hormone essential for regulating the menstrual cycle and maintaining pregnancy. This sustained-release formulation ensures a gradual and consistent release of progesterone, optimizing therapeutic efficacy and minimizing fluctuations in hormone levels. Progesterone plays a critical role in preparing the endometrium for implantation, supporting early pregnancy, and preventing uterine contractions. Ibigest SR 300 is primarily indicated for hormone replacement therapy in conditions such as progesterone deficiency, amenorrhea, abnormal uterine bleeding, and luteal phase support in assisted reproductive techniques. It is also used in the management of threatened miscarriage and to support pregnancy in cases of progesterone insufficiency. The natural micronized form enhances bioavailability and absorption compared to synthetic analogs. Administration should be as prescribed by a healthcare professional, with dosage tailored to the specific clinical condition. Common side effects may include headache, dizziness, breast tenderness, and mild gastrointestinal disturbances. Contraindications include known hypersensitivity to progesterone, active thromboembolic disorders, liver dysfunction, and certain hormone-dependent malignancies. Regular monitoring and follow-up are recommended to assess therapeutic response and detect any adverse effects. Ibigest SR 300 Tablet should be stored in a cool, dry place away from direct sunlight and out of reach of children.