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Acute bacterial exacerbations of chronic obstructive pulmonary disease. amoxan 500mg Indicated for treatment of acute bacterial exacerbations of chronic bronchitis due to Haemophilus influenzae, Moraxella catarrhalis, or Streptococcus pneumoniae 500 mg PO qDay for 3 days OR Alternatively, 500 mg PO x 1 dose on Day 1, followed by 250 mg PO qDay on Days 2-5