The short version
4 companies supply this market — a reasonable cushion if one runs into trouble. The price has jumped 45% in a year, to $46.03 per mL — sharp rises like this often mean supply is already tightening. Put together: this looks like a healthy supply — the boring kind, which is exactly what you want. 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%).
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