Received Oct 17, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| HEP | HEP B (ENGERIX-B) | GLAXOSMITHKLINE BIOLOGICALS | 2 | AV4TN | — |
Administration of Less than the Recommended Dose of Engerix B in Adults; Underdose; This non-serious case was reported by a other health professional via call center representative and described the occurrence of adult use of a child product in a 73-year-old female patient who received HBV (Engerix B pediatric) (batch number AV4TN, expiry date 25-JAN-2027) for prophylaxis. On 11-SEP-2025, the patient received the 2nd dose of Engerix B pediatric. On 11-SEP-2025, less than a day after receiving Engerix B pediatric, the patient experienced adult use of a child product (Verbatim: Administration of Less than the Recommended Dose of Engerix B in Adults) and underdose (Verbatim: Underdose). The outcome of the adult use of a child product and underdose were not applicable. This report is made by GSK without prejudice and does not imply any admission or liability for the incident or its consequences. Additional Information: GSK Receipt Date: 18-SEP-2025 and 03-OCT-2025 The reporter reported that an adult patient received Engerix-B second pediatric dose on 11th September 2025 with lot AV4TN and expiration date on 25th January 2027.