Oddly enough, during a visit to an Ear/Nose/Throat specialist, I was told to take prilosec, once in the morning and again at bedtime. This helps calm the
effects of allergy drainage, which can upset the stomach and cause a sore throat. The other thing I do is take 1200 mg. guaifenesin (Mucinex or generic), once in the morning and again at bedtime. This thins mucus so that it *will* drain, also allowing the throat more moisture.