Received Oct 16, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| HEP | HEP B (ENGERIX-B) | GLAXOSMITHKLINE BIOLOGICALS | 1 | LG749 | — |
| HEP | HEP B (ENGERIX-B) | GLAXOSMITHKLINE BIOLOGICALS | 2 | LG749 | — |
Underdose; Underdose; This non-serious case was reported by a pharmacist via call center representative and described the occurrence of accidental underdose in a 56-year-old male patient who received HBV (Engerix B) (batch number LG749, expiry date 13-SEP-2026) for prophylaxis. Co-suspect products included HBV (Engerix B) (batch number LG749, expiry date 13-SEP-2026) for prophylaxis. On 27-JUN-2025, the patient received the 1st dose of Engerix B. On 31-JUL-2025, the patient received the 2nd dose of Engerix B. On 27-JUN-2025, an unknown time after receiving Engerix B and Engerix B, the patient experienced accidental underdose (Verbatim: Underdose). On 31-JUL-2025, the patient experienced accidental underdose (Verbatim: Underdose). The outcome of the accidental underdose and accidental 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: 16-SEP-2025 The reporter reported that an adult patient had two doses of the series for Engerix-B, but they just realized that both doses were only 0.5 ml.