Lung maturation injection is recommended by doctors for cases of threatened miscarriage, at risk of premature birth. Besides the benefit of reducing the risk of respiratory failure in newborns, lung maturation injection also has some unwanted side effects.

Utrogestan 100mg is a pharmaceutical preparation in capsule form designed for oral administration or vaginal insertion. Its active ingredient, progesterone, is indicated for clinical conditions such as threatened miscarriage, infertility, menopause, and related disorders. What key considerations should pregnant women keep in mind when using Utrogestan 100mg during the first trimester of pregnancy?