"C0018165"^^ . "C65816"^^ . "5IE62321P4"^^ . "Gramicidin"^^ . _:b677508 . "Gramicidin"^^ . "Pharmacologic Substance"^^ . "GRAMICIDINPTFDA5IE62321P4" . . "Gramicidin"^^ . _:b677508 . "FDA"^^ . . _:b677508 . . . "A heterogeneous mixture of six antibiotic peptides obtained from the soil bacterium Bacillus brevis. Gramicidin is active against most Gram-positive bacteria and against select Gram-negative organisms. It is administered as a topical application.NCI" . . . _:b677508 . "1405-97-6"^^ . "GramicidinPTNCI" .