Progesterone (Natural Micronized) is a progesterone (female hormone). Progesterone (Natural Micronized) is a type of progesterone hormone which is extracted from plants, but its property matches with the human progesterone. This medicine undergoes a process called micronization where the size of the natural progesterone is reduced. The small size of the progesterone particles enhances its dissolution and absorption. This provides better availability of Progesterone (Natural Micronized) in the body and decreases its side effects.Indications: Luteal support during assisted reproductive techniques (ART)? To provide luteal support in luteal phase defects? Threatened abortion / recurrent abortion with proven luteal phase insufficiency / defects? Oocyte donation programme? To prevent preterm delivery Side effects may include drowsiness, breast tenderness and pain, abdominal bloating and pain, pre-menstrual symptoms, nausea, oedema, headache, skin rash and itching, insomnia and depression. More severe side effects include jaundic