| Type: | combo |
| Component1: | Sodium phenylacetate |
| Class1: | Antihyperammonemic |
| Component2: | Sodium benzoate |
| Class2: | Antihyperammonemic |
| Tradename: | Ammonul, Ucephan |
| Pregnancy Us: | C |
| Atc Prefix: | A16 |
| Atc Suffix: | AX30 |
| Legal Us: | Rx-only |
| Cas Number: | 114-70-5 |
| Cas Supplemental: | (sodium phenyacetate) (sodium benzoate) |
| Unii: | 48N6U1781G |
| Kegg: | D10205 |
Sodium phenylacetate/sodium benzoate, sold under the brand name Ammonul among others, is a combination medication used to treat high blood ammonia.[1] It is a combination of sodium phenylacetate and sodium benzoate.[1]