Noun
amphotericin B (uncountable)
(biochemistry, pharmacology) An antibiotic that is obtained from a soil streptomycete (Streptomyces nodosus) and is administered typically by intravenous injection chiefly to treat serious, potentially life-threatening, systemic fungal infections.
Synonym: amphoterrible (informal)
Amphotericin B is another option. Source: Internet