The short version
10 companies supply this market — deep enough that no single failure threatens the supply.
Market view
22 marketed package NDCs · 10 active manufacturers
Most dispensed: 100 mg/mL · Injection, Solution · #1 vial, multi-dose/box / 10 ml in 1 vial, multi-dose · 100 mg/mL · Injection, Solution · #10 vial, multi-doses/box / 10 ml in 1 vial, multi-dose
10 companies supply this market — deep enough that no single failure threatens the supply.
Other molecules FDA puts in Cytoprotective Agent, 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.