ⓘ How this was built
Data sources
- FDA drug shortages via openFDA (current file: Current, To Be Discontinued, and recently Resolved rows)
- Internet Archive (Wayback) snapshots of FDA's shortage list since 2019, reconstructed into episodes
- DrugDashboards Kaplan–Meier duration curves and conditional duration model
Method
Top rows are FDA's live listings whose package NDC is this product or another package of the same generic name and dosage form. openFDA drops resolved rows after about six months, so older episodes come from monthly Wayback snapshots of FDA's file, matched on the molecule with dosage-form words stripped (that matching can pull in other salts or forms of the same molecule — the presentation is shown so you can tell). 'Month N of a typical M' compares this episode's age with the Kaplan–Meier median for its form class (injectable, oral solid, other) over episodes since October 2019, open episodes censored; the resolution odds come from a model conditioned on the episode's age and reason. To check: FDA's drug shortage database, and web.archive.org for its history.
Pipeline and calculations built by Claude (Fable 5) from the public datasets above. Educational only — verify against primary sources before acting.
In shortage now — Fentanyl Citrate Preservative Free, Injection, .05 mg/1 mL (NDC 63323-806-01)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate Preservative Free, Injection, .05 mg/1 mL (NDC 63323-806-02)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate Preservative Free, Injection, .05 mg/1 mL (NDC 63323-806-05)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate Preservative Free, Injection, .05 mg/1 mL (NDC 63323-806-20)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate Preservative Free, Injection, .05 mg/1 mL (NDC 63323-806-50)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 100 mcg/2 mL (50 ug/1 mL) (NDC 0409-9094-22)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 1000 mcg/20 mL (50 ug/1 mL) (NDC 0409-9094-31)Jan 1, 2012
Other
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 250 mcg/5 mL (50 ug/1 mL) (NDC 0409-9094-25)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 2500 mcg/50 mL (50 ug/1 mL) (NDC 0409-9094-61)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 50 ug/1 mL (NDC 63323-808-11)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
In shortage now — Fentanyl Citrate, Injection, 500 mcg/10 mL (50 ug/1 mL) (NDC 0409-9094-28)Jan 1, 2012
month 177 — 9× the typical 20-month injectable shortage · model puts 23% odds the market's longest-running episode resolves within 6 months
Archived episodes (FDA list history via Wayback, 2019+)
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 ug/1 mL (NDC 0641-6025-10) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 mcg/1 mL (NDC 0641-6247-25) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 ug/1 mL (NDC 0641-6026-05) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 ug/1 mL (NDC 0641-6024-10) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 mcg/1 mL (NDC 0641-6030-01) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 mcg/1 mL (NDC 0641-6027-25) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 mcg/1 mL (NDC 0641-6028-25) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
In shortage now — Hikma Pharmaceuticals USA, Inc., Fentanyl Citrate, Injection, 50 mcg/1 mL (NDC 0641-6029-25) (listed as “Fentanyl Citrate Injection”)Dec 20, 2023 → last seen Jul 20, 2026
Showing 8 of 30 archived episodes.