This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Benzydamine and pregnancy
If you're pregnant and have mouth ulcers or a sore throat, talk to your doctor or a pharmacist. They'll be able to discuss your options and help you decide what treatments are best for you and your baby.
Only small amounts of benzydamine get into the body when you use it because most of it stays in the throat. Because of this, your doctor may say it's OK to use benzydamine.
Although benzydamine is unlikely to affect your baby, it should only be used for short periods (a few days). If you feel you need to use it for longer, talk to your doctor or a pharmacist.
Benzydamine and breastfeeding
It's OK to use benzydamine while breastfeeding. Try to use it for as short a time as possible.
It's not known how much benzydamine passes into breast milk, but it's only thought to be a tiny amount. It's unlikely to cause any side effects in your baby.
If you notice that your baby is not feeding as well as usual, or if you have any other concerns about your baby, talk to your health visitor, midwife, doctor or pharmacist as soon as possible.
View the original NHS website page ↗. Refreshed 19 August 2026.
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