Pharmacology Oxytocin antagonists are used as tocolytics in preterm labor. Which among the following is an oxytocin antagonist? A Ritodrine B Atosiban C Isoxsuprine D Methergine 💡 Explanation Oxytocin antagonists are used as tocolytics in preterm labor. Which among the following is an oxytocin antagonist? ✓ Correct Answer: B. Atosiban