TRACTOCILE is given intravenously in three successive stages: • The initial intravenous injection of 6.75 mg in 0.9 ml is slowly injected into a vein over one minute. • A continuous infusion at a dose of 18 mg/ hour is given for 3 hours. • A continuous infusion at a dose of 6 mg/ hour is given for up to 45 hours, or until the contractions of the uterus have subsided.