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US ATC A16AX09 · updated 2 Nov 2026
Glycerol Phenylbutyrate shortage in United States
Is there a Glycerol Phenylbutyrate shortage in United States?
Yes. As of 2 Nov 2026, 2 Glycerol Phenylbutyrate products are reported short in United States, the first since 1 Sep 2026. No return date has been given. Main reason: not stated.
Also short in Canada. All countries.
Affected products in United States
| Country | Product | Company | Since | Expected back | Reason |
|---|---|---|---|---|---|
| US | RAVICTI, Oral Liquid, 1.1 g/1 mL (NDC 75987-050-06) discontinuation | Amgen Inc. | 1 Sep 2026 | not given | Not stated |
| US | RAVICTI, Oral Liquid, 1.1 g/1 mL (NDC 75987-050-07) discontinuation | Amgen Inc. | 1 Sep 2026 | not given | Not stated |
Source
U.S. Food and Drug Administration (FDA), Drug Shortages via openFDA. Official list. Shortages the FDA lists as current, plus products to be discontinued; one row per package (NDC).