gastrointestinal antispasmodics during breastfeeding

A review states (1):

• hyoscine butylbromide, propantheline or peppermint oil are considered preferred choices in breastfeeding
  • mebeverine and alverine can also be used
    
• is limited evidence for the use of antispasmodics during breastfeeding and therefore recommendations are generally made on the properties of the medicine
  • choice of medicine will depend on symptoms
  • is a theoretical risk that suppression of breast milk production could occur with antimuscarinic drugs (atropine, hyoscine butylbromide, propantheline)
  • have been conflicting reports that peppermint may increase or decrease breast milk production
    • is no published evidence to support this
      
• once breastfeeding is established, any effect on breast milk production becomes less significant
  
• advisable to monitor breastfed infants for adequate feeding and poor weight gain, especially if used long-term

Reference:

• NHS Specialist Pharmacy Service (March 8th 2024). Using gastrointestinal antispasmodics during breastfeeding