The short version
4 companies supply this market — a reasonable cushion if one runs into trouble. The brand price has held steady around $24.68 per unit over the past year. Generic versions run $14.91 per unit — 1.7× cheaper. A shortage here was resolved within the past year — markets usually stay tight for a while after. Historically, drugs in this position went on to a new shortage within 90 days about 0.6% of the time — roughly 4× the typical drug (0.1%).