How long does it take for biaxin (clarithromycin) to start working for an ear infection? i started taking it yesterday evening.

A few days: This type of antibiotic works a little slower than the penicillin based types but eventually works well. The tissue and blood level must build to adequate level while it begins to kill the germs. Much of the discomfort of otitis is caused by the pressure of the fluid/germ mix and take time to improve, regardless of treatment.Pain meds like Ibuprofen helps.