Received Mar 9, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| HEP | HEP B (ENGERIX-B) | GLAXOSMITHKLINE BIOLOGICALS | UNK | — | — |
Maladministration of Pediatric Dose (0.5-mL -10 mcg) on an Adult Patient; 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 78-year-old patient who received HBV (Engerix B) for prophylaxis. On 16-FEB-2026, the patient received Engerix B. On 16-FEB-2026, an unknown time after receiving Engerix B, the patient experienced adult use of a child product (Verbatim: Maladministration of Pediatric Dose (0.5-mL -10 mcg) on an Adult Patient) 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: 02-MAR-2026 The batch number was not provided, and we are unable to contact the reporter.