Reaction

Defiant Behaviour reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 300 reports · 8 co-occurring drugs

As of the last recalculation, Defiant Behaviour appears in 300 FAERS reports alongside 8 co-occurring drug terms. The strongest observed disproportionality signal is GUANFACINE (PRR 110.2).

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
Guanfacine12110.2110.3
Elexacaftor, Tezacaftor, And Ivacaftor1269.569.6
Montelukast5555.455.5
Methylphenidate1229.929.9
Cannabidiol927.527.5
Lumacaftor And Ivacaftor324.524.5
Pimavanserin Tartrate1621.121.2
Valbenazine38.38.3

Related reactions

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