Reactions
2,542 totalMedDRA Preferred Terms reported to FAERS across the dataset. Click through to see which drugs report each reaction most often, along with related reactions ranked by co-occurrence.
Reference statistics only. Reactions are MedDRA Preferred Terms reported to FAERS. This directory is a reverse index of reporting volume — NOT a symptom checker, NOT diagnostic guidance. Counts reflect reporting volume — how often a reaction was reportedon FAERS submissions, not how often it occurs in the population. Empty entries do not mean “no reactions”. For decision-grade use, consult openFDA and the FAERS Public Dashboard directly.
- 1697 drugsDrug Ineffective
drug-ineffective3,780,383 reports - 1613 drugsFatigue
fatigue2,988,232 reports - 1720 drugsNausea
nausea2,766,923 reports - 1484 drugsOff Label Use
off-label-use2,714,134 reports - 1255 drugsPain
pain2,370,218 reports - 1503 drugsDiarrhoea
diarrhoea2,305,711 reportsalso: Diarrhea - 1340 drugsDyspnoea
dyspnoea2,105,022 reportsalso: Dyspnea - 1386 drugsHeadache
headache2,079,859 reports - 1259 drugsVomiting
vomiting1,564,547 reports - 924 drugsDeath
death1,526,019 reports - 1208 drugsDizziness
dizziness1,490,367 reports - 779 drugsArthralgia
arthralgia1,397,981 reports - 961 drugsMalaise
malaise1,246,599 reports - 861 drugsRash
rash1,206,426 reports - 1029 drugsAsthenia
asthenia1,185,892 reports - 793 drugsPneumonia
pneumonia1,097,104 reports - 743 drugsFall
fall1,012,262 reports - 882 drugsPyrexia
pyrexia970,165 reports - 580 drugsCondition Aggravated
condition-aggravated735,080 reports - 508 drugsAnxiety
anxiety631,101 reports - 436 drugsCough
cough630,349 reports - 434 drugsPain In Extremity
pain-in-extremity605,797 reports - 658 drugsPruritus
pruritus600,466 reports - 454 drugsWeight Decreased
weight-decreased594,405 reports - 63 drugsRheumatoid Arthritis
rheumatoid-arthritis542,825 reports - 381 drugsAcute Kidney Injury
acute-kidney-injury477,010 reports - 181 drugsChronic Kidney Disease
chronic-kidney-disease395,438 reports - 458 drugsInsomnia
insomnia365,480 reports - 66 drugsJoint Swelling
joint-swelling332,795 reports - 372 drugsDepression
depression322,060 reports