Efficacy and safety of a triple active sore throat lozenge in the treatment of patients with acute pharyngitis: Results of a multi‐centre, randomised, placebo‐controlled, double‐blind, parallel‐group trial (DoriPha)

Objective The aim of this multi‐centre, randomised, double‐blind, placebo‐controlled trial was to compare the efficacy and safety of the fixed combination of 0.5 mg tyrothricin, 1.0 mg benzalkonium chloride, and 1.5 mg benzocaine (study drug marketed as Dorithricin®) in repeat dosing for 3 days to match placebo lozenges in the treatment of acute pharyngitis in adults.