BACKGROUND	Clarithromycin extended-release tablets are indicated for the treatment of adults with acute maxillary sinusitis caused by Haemophilus influenzae , Moraxella catarrhalis , or Streptococcus pneumoniae ; acute bacterial exacerbation of chronic bronchitis due to H influenzae , Haemophilus parainfluenzae , M catarrhalis , or S pneumoniae ; or community acquired pneumonia due to H influenzae , H parainfluenzae , M catarrhalis , S pneumoniae , Chlamydia pneumoniae , or Mycoplasma pneumoniae .\