Duvadilan Retards, and 10mg Injection is used for Premature labor pain, Threatened abortion, Night cramps, Reduced blood flow in the veins and arteries, Blood vessel diseases, and other conditions. this drug may also be used for purposes not recorded in this medication guide. It contains Isoxsuprine as an active ingredient.This drug is prescribed for preterm labor.This Injection works by making blood vessels wider to increase the blood flow.