Unisom shortage status
2 active shortage notices across 1 country.
Last updated 1 Aug 2026 · sourced from official medicines regulators
- Generic name (INN)
- Unisom
- Brand names
- Unisom, SleepMelts, Diphenhydramine HCl
- Class
- Auto-created by FDA MedWatch — Drug Safety Alerts scraper
Where Unisom is in shortage
| Country | Severity | Notices | Since | Est. resolution | Source |
|---|---|---|---|---|---|
| United States | high | 2 | 4 Mar 2025 | — | FDA MedWatch |
Why Unisom is in shortage
- regulatory action — e.g. “CGMP Deviations: Nitrosamine Drug Substance Related Issue impurity above the daily acceptable intake limit defined by the Food and Drug Administration.” (United States)
Frequently asked questions
Is Unisom currently in shortage?
Yes. As of the latest regulator updates, Unisom has 2 active shortage notices across 1 country (United States). Status is refreshed daily from official regulatory sources.
Why is Unisom in shortage?
Regulators attribute the current Unisom shortages to regulatory action. The exact cause varies by country and product — each notice on this page links to the official source.
Where does this Unisom shortage data come from?
Every shortage notice on this page is scraped daily from an official national medicines regulator (such as the FDA, TGA, MHRA or EMA) and linked back to its source. Mederti aggregates 40+ regulators across 50+ countries and never publishes unsourced shortage claims.
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