Safety in Lactation: Anti-arrhythmics

Additional information relating to breastfeeding

To be used in conjunction with individual drug entries for specific information and guidance.

  • Choice will depend on clinical condition.
  • Lidocaine is considered compatible with breastfeeding and is used mostly for ventricular arrhythmias after myocardial infarction.
  • Amiodarone is considered to be contraindicated with breastfeeding due to the potential risk of iodine-associated adverse effects in the infant. It is normally used when other anti-arrhythmics have failed.
  • Other drugs with anti-arrhythmic actions not included in this section include verapamil and IV beta blockers.