The short version
Just 3 companies supply this market — thin enough that a single exit would be felt immediately. The price is up 13% over the past year, to $0.1551 per unit. 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 0.3% of the time — roughly 2× the typical drug (0.1%).
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