upper respiratory tract infection
"I have used all kinds of antibiotics for my bronchitis over the years. Clarithromycin is so far the most effective of all. Usually I am on Amoxicillin and it gives me slow recovery. I was recently given Augmentin which I never used before. Surprisingly it didn't work at all. My chest infection got worse after a week on Augmentin. Fortunately, the symptom totally disappeared after merely two days switching to Clarithromycin. 

I am also taking Lansoprazole at the same time for my stomach so I don't have any side effects on stomach. I sense a little bit bitter taste in the mouth in the morning. I can live with that."