Hald SR 400 Tablet contains Progesterone (Natural Micronized) 400 mg, a hormone essential for regulating the menstrual cycle and maintaining pregnancy. This medication is primarily indicated for the treatment of progesterone deficiency, luteal phase support in assisted reproductive technology, prevention of preterm birth in at-risk pregnancies, and management of secondary amenorrhea. Progesterone plays a crucial role in preparing the endometrium for implantation and sustaining gestation by modulating the uterine environment. Hald SR 400 Tablet is formulated to provide sustained release, ensuring prolonged therapeutic levels of progesterone in the bloodstream. It is administered orally, with dosage and duration tailored to the specific clinical condition and patient response. Common adverse effects may include headache, dizziness, breast tenderness, and gastrointestinal disturbances; however, serious side effects are rare when used as prescribed. Contraindications include known hypersensitivity to progesterone or any component of the formulation, active thromboembolic disorders, and certain hormone-sensitive cancers. Caution is advised in patients with hepatic impairment or history of cardiovascular disease. Regular monitoring by a healthcare professional is recommended to assess efficacy and detect any potential adverse reactions. Hald SR 400 Tablet should be used under strict medical supervision to ensure optimal therapeutic outcomes.