There is little evidence teething gels containing an anaesthetic are effective at easing pain, the medicines regulator has said.
The gels for children and babies are available in High Street shops.
But from next year those containing lidocaine – the anaesthetic used in many gels – will be available only in pharmacies.
Parents have been advised to massage the gums or use a teething ring before trying the gels.
The guidance comes from the Medicines and Healthcare