Buscopan is compatible with breastfeeding
Hyoscine which is most frequent referred to by mothers under the trade name of Buscopan ™. It is used to resolve smooth muscle spasm often in irritable bowel syndrome. It can also help bladder 0cramps and period pain.
The BNF states that the amount in breastmilk is too small to be harmful.
It’s unusual to have any side effects, but some people get a dry mouth, constipation and blurred vision.
See also factsheet on irritable bowel syndrome and breastfeeding https://breastfeeding-and-medication.co.uk/fact-sheet/irritable-bowel-syndrome-ibs-and-breastfeeding
Plasma protein binding 50%, oral bio-availability 81%, licensed in children.