Indications & Dose: ANTHRAX IM Adult 600, 000-1MU/day 60 days | Postexposure prophylaxis IM Adult 1.2MU BID Child 25, 000U/kg, max 1.2MU BID | BACTERIAL ENDOCARDITIS IM Adult 600, 000-1MU/day for susceptible strains of group A streptococci | CONGENITAL SYPHILIS IM Adult 50, 000U/kg/day 10 days, if therapy missed for >1 day restart the entire course | DIPHTHERIA IM Adult 300, 000-600, 000U/day 14 days adjunct to diphtheria antitoxin Child <10 kg: 300, 000U/day, > 10 kg: 600, 000U/day adjunct to diphtheria antitoxin | ERYSIPELAS Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | NECROTIZING ULCERATIVE GINGIVITIS IM Adult 600, 000-1MU/day | OTITIS MEDIA Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | PHARYNGITIS Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | PNEUMONIA Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | RAT-BITE FEVER IM Adult 600, 000-1MU/day | SCARLET FEVER Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | SKIN/SKIN STRUCTURE INFECT Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | SYPHILIS IM Adult 600, 000U/day 8 days. Treatment may be continued for 2 wk in patients with late syphilis for primary, secondary/latent syphilis with a negative CSF test | TONSILLITIS Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day | UPPER RESPIRATORY TRACT INFECT Moderate-to-severe IM Adult 600, 000-1MU/day 10 days Child <27 kg: 300, 000U/day