Targets primarily the cell membrane of Gram-positive bacteria and shows little effect against Gram-negative bacteria. Gramicidin is typically used as a topical antimicrobial agent because it also causes hemolysis of red blood cells.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.