This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Hyoscine hydrobromide and pregnancy
Hyoscine hydrobromide is not recommended during pregnancy because not enough is known about its effects.
However, your doctor may offer you hyoscine hydrobromide if you have severe travel sickness that cannot be treated any other way.
Hyoscine hydrobromide and breastfeedingIt is not known how much hyoscine hydrobromide gets into breast milk, but it's likely to be a very small amount.
If you are only taking occasional doses of hyoscine hydrobromide for a short time, for example for travel sickness, it's OK to use while breastfeeding and your baby does not need to be monitored for side effects.
If you need to take hyoscine hydrobromide more regularly, this is still OK while breastfeeding, but monitor your baby for possible side effects, such as sleepiness, constipation, and peeing less than usual.
If your baby is not feeding as well as usual, or you have any other concerns about your baby while you're breastfeeding, talk to your doctor, pharmacist, health visitor or midwife.
Hyoscine hydrobromide and fertilityThere's no good evidence to suggest that taking hyoscine hydrobromide reduces fertility in either men or women.
Meds New IA (H2) - Pregnancy non-urgent care card
Tell your doctor if you're:
- trying to get pregnant
- pregnant
- breastfeeding
View the original NHS website page ↗. Refreshed 19 August 2026.
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