Methylergometrine is a semisynthetic ergot alkaloid and a derivative of ergonovine and is used for the prevention and control of postpartum and post-abortion hemorrhage. Methylergometrine( Methergine ) generic is a synthetic analogue of ergonovine, prescribed for treating postpartum hemorrhage. It works by increasing uterine contractions. Learn about methergine uses, dosage, side effects, food interactions, and more. Get all the details about methergine from MedicinesFAQ.