Primary public source
The service monitors public FDA/openFDA drug shortage data. Source availability, record timing, corrections, and classifications are controlled by the public source, not by Formulary Signal.
Data sources
Public shortage records, plus context around the change.
Formulary Signal watches public FDA/openFDA drug shortage records and attaches public-source context to alerts so teams can verify important changes against official public sources.
FDA RSS context
Where available, signal cards can note matching FDA Drug Shortages RSS items. RSS context is used as public-source context, not as a clinical or procurement instruction.
RxNorm matching context
RxNorm can provide normalized names that help compare watch terms against public shortage records. Matching confidence remains a watchlist relevance label, not a medical rating.
openFDA NDC context
When a package NDC match is available, signal cards can include labelers, dosage forms, routes, marketing categories, product counts, package counts, and DailyMed label links.
DailyMed links
DailyMed context is limited to official label links and basic public identity context from related public records. Formulary Signal does not interpret label warnings or clinical content.
ASHP link-only handling
ASHP shortage bulletins may be useful external context. Formulary Signal does not copy or summarize ASHP bulletin content; it treats ASHP as a link-only reference where applicable.
Watchlist matching
Customer watch terms can include drug names or shortage terms. Formulary Signal compares those terms against public shortage records during scheduled checks.
Verification
Alerts include timestamped context and source references. Important records should be verified against official public sources before operational use.
Independence
Formulary Signal is not affiliated with, endorsed by, sponsored by, or approved by the U.S. Food and Drug Administration.