Mouth and throat antiseptic

Benzoxonium chloride (بنزوكسونيوم كلوريد)

Benzoxonium chloride is an antiseptic that kills germs in the mouth and throat. It was available with a local anaesthetic (lidocaine) in a mouthwash and lozenges to ease sore throat and mouth. The registered products are now cancelled.

What it is used for

  • Easing the pain of a mild sore throat or sore mouth
  • Helping to disinfect the mouth in mild gum inflammation and mouth ulcers

How it is used

  • The mouthwash is used to rinse or gargle and then spat out; do not swallow it
  • Lozenges are left to dissolve slowly in the mouth and not chewed; follow the leaflet and ask your pharmacist

Possible side effects

  • Temporary numbness of the mouth and throat from the lidocaine
  • Mild irritation or a change in taste
  • Rarely, allergy

Who should not use it

  • Do not use it if you are allergic to this medicine or any ingredient in the product
  • It is not used in young children unless a doctor advises it

Before and while using it

  • Do not eat or have hot drinks until the numbness wears off, to avoid biting your tongue, burns or choking
  • See a doctor if a sore throat lasts more than a few days or comes with high fever or difficulty swallowing or breathing

Medicine interactions

  • Do not use it at the same time as other mouthwashes or mouth antiseptics unless your pharmacist advises it

Pregnancy and breastfeeding

  • Ask your doctor or pharmacist before using it in pregnancy or breastfeeding

How to store it

  • Store at room temperature away from heat and moisture, out of the sight and reach of children.

Get medical help straight away if

  • Your face, lips or tongue swell, or you find it hard to breathe.
  • You get a severe rash, blistering or peeling skin.
  • A side effect worries you or doesn’t go away: contact your doctor or pharmacist.

Questions about this medicine?

Talk to a doctor by video, or send your question by text.

Source: Standard international medicine references

This guide is general information and doesn’t replace advice from your doctor or pharmacist. Don’t start, stop or change a medicine without asking them, and always read the leaflet in the pack.