7.1.3 Myometrial relaxants

  • Injection 7.5mg/ml
  • Concentrate for IV infusion 7.5mg/ml (5ml vial)

MHRA Drug Safety Update November 2013 advises that the use of short-acting β2 agonists (SABAs) for tocolysis in premature labour has been restricted to 48 hours maximum parenteral use under specialist supervision, after a European safety review. Oral SABAs should not be used in any obstetric indication.


Home > Formulary > Chapters > 7. Obstetrics, gynaecology, and urinary-tract disorders > 7.1 Drugs used in obstetrics > 7.1.3 Myometrial relaxants


  • First line
  • Second line
  • Specialist
  • Hospital