Mild-morderate PCP (P9O2 >70 mmHg) give TMP-SMX ds 2 tabs PO every 8 hrs (1)
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Severe PCP (P9O2 < 70 mmHg) TMP-SMX (5mg/kg IV of trimethoprim) every 8 hrs, plus Prednisone 40 mg PO bid x5 days, then 20 mg PO bid x5 days, then 20 mg PO every day (2)
Mild-moderate PCP: atovaquone suspension 750 mg PO bid, clindamycin 300-450 mg q/d and primaquine 15-30 mg PO every day, dapsone 100 mg PO every day and trimethoprim 5 mg/kg PO tid, pentamidine 3 mg/kg/day (1)