Prescription
Oxytocin receptor antagonist (anti-contraction medicine)
Atosiban
Last reviewed April 2026
Who is this for?
What is this drug?
Atosiban is an injection that works by blocking a natural hormone called oxytocin, which causes the womb to contract — this helps stop premature labour (when a baby is trying to come too early).
What is it used for?
Premature labour (threatened preterm birth)stopping early contractions of the womb between 24 and 33 weeks of pregnancy
Prescription Required
A doctor's prescription is required to obtain this drug legally.