Received Sep 23, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (MODERNA)) | MODERNA | 1 | — | IM |
fatigue; drowsiness/wanted to sleep all day; nausea; This spontaneous case was reported by a consumer and describes the occurrence of SOMNOLENCE (drowsiness/wanted to sleep all day), NAUSEA (nausea) and FATIGUE (fatigue) in a female patient of an unknown age who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis. No Medical History information was reported. In August 2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular use) 1 dosage form. On an unknown date, the patient experienced SOMNOLENCE (drowsiness/wanted to sleep all day), NAUSEA (nausea) and FATIGUE (fatigue). At the time of the report, SOMNOLENCE (drowsiness/wanted to sleep all day), NAUSEA (nausea) and FATIGUE (fatigue) had resolved. The action taken with mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular use) was unknown. Concomitant medication was not reported. It was reported that a patient preferred for the Moderna vaccine due to her overall positive experiences with it. Following her initial dose, she experienced mild nausea and drowsiness, which was resolved by nightfall. Importantly, no side effects were reported with subsequent doses. This experience had led her to continue choosing Moderna for all her vaccinations. Patient received 8 Moderna COVID-19 vaccine doses in total. The last dose was received in November 2024. Vaccinations were spaced according to public guidance (initial 3 doses close together, later boosters over time). After the first Moderna dose, patient experienced nausea for all day following vaccination. It was reported that the patient had extreme drowsiness/fatigue like she wanted to sleep all day. By nightfall, nausea had resolved, patient's energy returned and was wide awake. Patient had subsequent Moderna doses (7 in total) and had no side effects. Patient tolerated all additional doses without issues. Treatment medication was not reported. Reporter did not allow further contact