Benzonatate
"Yesterday was 2nd instance that I have been prescribed the 200mg Benzonatate. I take religiously 3 times per day and yet no change. Last time I was prescribed I have a terrible sinus infection and bronchitis and all my symptoms continued for 8 days after taking this and a nasal spray for 10 days straight. This time I have upper respiratory infection and pharyngitis and after roughly 36 hours of meds there is no change in cough.....I think a cough drop does more. Don't think this works at all."