Macgest SR 300 contains progesterone, a natural female hormone crucial for maintaining pregnancy. It is prescribed to support the uterine lining and prevent early miscarriage. While progesterone is biologically classified as a steroid hormone, it is not the type of steroid associated with muscle building or anti-inflammatory medications; rather, it is a supportive pregnancy hormone. It is safe and commonly prescribed during early pregnancy to help secure the pregnancy. Please continue to take it strictly under your obstetrician's guidance to ensure it is tailored to your specific health needs.