Anbesol liquid is a local anaesthetic which works by stopping the sensation of pain. It can be used to to help relieve pain caused by mouth ulcers and sore gums. The Anbesol Liquid is: Suitable for the Elderly Suitable for Adolescents, Children aged between 10-18years old. Quick-acting Effective relief of pain Contains no sugar If you still have symptoms after 3 days, speak to your doctor or dentist.