Active and Placebo Controlled Study to Test the Efficacy and Safety of an Aspirin-Lidocaine Lozenge in the Symptomatic Treatment of Sore Throat Associated With a Common Cold

Single oral application of a fixed combination of Aspirin and Lidocain (as one lozenge)

Single oral application of Aspirin (as lozenge)

Single oral application of Lidocain (as lozenge)

Single oral application of Placebo (as lozenge)