Prontogest 100MG is a prescription injection containing progesterone, a hormone essential for regulating the menstrual cycle and maintaining pregnancy. It is commonly used in fertility treatments to support the luteal phase and prepare the uterine lining for embryo implantation. Prontogest is also prescribed to treat conditions such as amenorrhea (absence of menstruation) and abnormal uterine bleeding. Additionally, it may be used in hormone replacement therapy (HRT) for women with progesterone deficiency. Always use this medication under the supervision of a healthcare professional.