patients with infective endocarditis caused by penicillin-sensitive streptococci ( minimal inhibitory concentration less than or equal to 0.1 microgram/ml of penicillin ) may be treated successfully with one of the following three regimens : ( 1 ) aqueous penicillin g administered intravenously for 4 weeks , ( 2 ) aqueous penicillin g administered intravenously for 4 weeks in combination with streptomycin for the first 2 weeks of therapy , or ( 3 ) parenterally administered penicillin plus streptomycin for 2 weeks .
C0014121
infective endocarditis
C0038425
streptomycin