The short version
4 companies supply this market — a reasonable cushion if one runs into trouble.
Market view
8 marketed package NDCs · 4 active manufacturers
4 companies supply this market — a reasonable cushion if one runs into trouble.
Other molecules FDA puts in Penicillin-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.