Utility of the sore throat pain model in a multiple-dose assessment of the acute analgesic flurbiprofen: A randomized controlled study

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Abstract

BACKGROUND: The sore throat pain model has been conducted by different clinical investigators to demonstrate the efficacy of acute analgesic drugs in single-dose randomized clinical trials. The model used here was designed to study the multiple-dose safety and efficacy of lozenges containing flurbiprofen at 8.75 mg.<br /><br />METHODS: Adults (n=198) with moderate or severe acute sore throat and findings of pharyngitis on a Tonsillo-Pharyngitis Assessment (TPA) were randomly assigned to use either flurbiprofen 8.75 mg lozenges (n=101) or matching placebo lozenges (n=97) under double-blind conditions. Patients sucked one lozenge every three to six hours as needed, up to five lozenges per day, and rated symptoms on 100-mm scales: the Sore Throat Pain Intensity Scale (STPIS), the Difficulty Swallowing Scale (DSS), and the Swollen Throat Scale (SwoTS).<br /><br />RESULTS: Reductions in pain (lasting for three hours) and in difficulty swallowing and throat swelling (for four hours) were observed after a single dose of the flurbiprofen 8.75 mg lozenge (P<0.05 compared with placebo). After using multiple doses over 24 hours, flurbiprofen-treated patients experienced a 59% greater reduction in throat pain, 45% less difficulty swallowing, and 44% less throat swelling than placebo-treated patients (all P<0.01). There were no serious adverse events.<br /><br />CONCLUSIONS: Utilizing the sore throat pain model with multiple doses over 24 hours, flurbiprofen 8.75 mg lozenges were shown to be an effective, well-tolerated treatment for sore throat pain. Other pharmacologic actions (reduced difficulty swallowing and reduced throat swelling) and overall patient satisfaction from the flurbiprofen lozenges were also demonstrated in this multiple-dose implementation of the sore throat pain model.<br /><br />TRIAL REGISTRATION: This trial was registered with ClinicalTrials.gov, registration number: NCT01048866, registration date: January 13, 2010.

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Schachtel, B., Aspley, S., Shephard, A., Shea, T., Smith, G., & Schachtel, E. (2014). Utility of the sore throat pain model in a multiple-dose assessment of the acute analgesic flurbiprofen: A randomized controlled study. Trials, 15(1). https://doi.org/10.1186/1745-6215-15-263

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