Halls Extra Strong Mentho-Lyptus Lozenges (x 20) Halls Extra Strong Lozenges are fast acting lozenges that start working in 10 seconds & help to fight coughs, soothe sore throats & cool nasal passages. Halls Lozenges contain antiseptic in a soothing base, which kills germs that can cause sore throats & also works as an anaesthetic to relieve pain & discomfort.