The short version
11 companies supply this market — deep enough that no single failure threatens the supply.
Market view
36 marketed package NDCs · 11 active manufacturers
Most dispensed: 1 kg/kg · Powder · #1.25 kg/container · 1 kg/kg · Powder · #.125 kg/container · 500000 [USP'U] · Injection, Powder, Lyophilized, For Solution · #10 vials/carton / 1 injection, powder, lyophilized, for solution in 1 vial
11 companies supply this market — deep enough that no single failure threatens the supply.
Other molecules FDA puts in Polymyxin-class Antibacterial, with whether each is in shortage right now. Same class is not the same drug — substitution is a clinical decision, and this is a supply picture, not a recommendation.
Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.