The short version
7 companies supply this market — a reasonable cushion if one runs into trouble. The generic price is down 22% over the past year, to $0.0406 per unit. The brand (levothyroxine sodium) runs $1.35 per unit — 24× more. 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 0.5% of the time — roughly 3× the typical drug (0.1%).
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