Reaction

H1N1 Influenza reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 1,396 reports · 31 co-occurring drugs

As of the last recalculation, H1N1 Influenza appears in 1,396 FAERS reports alongside 31 co-occurring drug terms. The strongest observed disproportionality signal is OSELTAMIVIR (PRR 77.1).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.
DrugCo-reportsPRRROR
Oseltamivir4077.177.5
Oseltamivir Phosphate10972.172.4
Paroxetine Hydrochloride Hemihydrate5023.223.2
Paroxetine5022.722.7
Amitriptyline Hydrochloride2319.919.9
Palivizumab1918.718.7
Anti-Thymocyte Globulin (Rabbit)916.716.8
Basiliximab1215.315.4
Bendamustine Hcl1413.613.6
Daratumumab3513.413.4
Quetiapine Fumarate2613.413.4
Amphotericin B1113.213.2
Diazepam Oral Solution (Concentrate)6811.911.9
Diazepam Oral6811.911.9
Mirtazapine6811.611.6
Meropenem2411.311.3
Tramadol Hydrochloride2811.311.3
Itraconazole810.310.3
Daptomycin69.79.7
Melphalan Hydrochloride169.69.6
Ivacaftor59.49.4
Melphalan149.39.3
Fludarabine Phosphate238.98.9
Bortezomib508.68.6
Carfilzomib168.58.5
Bendamustine Hydrochloride67.57.5
Dornase Alfa86.16.1
Belimumab104.74.7
Natalizumab484.04.0
Icodextrin, Sodium Chloride, Sodium Lactate, Calcium Chloride, Magnesium Chloride73.43.4
Pomalidomide213.13.1

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Data source: openFDA FAERS. See the OpenPV methodology and limitations.