MID-VOLUME · SEX-BALANCED
fexofenadine Side Effects
fexofenadine (also sold as Allegra) sits MID-VOLUME #239 of 524 by FAERS report count. Lead signal: SEX-BALANCED - 69% of sex-coded reports are female (10,792 F / 4,893 M). Demographics and serious-outcome tables follow.
Data updated 2026-05-15
- 19,831
- FAERS reports
FDA Adverse Event Reporting System extract for fexofenadine. Stamp set WATCHLIST · DEATH-MARKED · HOSP-MID. How figures are compiled.
fexofenadine reporting skew - 69% of sex-coded reports are female (10,792 F / 4,893 M). Volume band MID-VOLUME #239 of 524 by FAERS report count; caseload WATCHLIST.
Mid-book FAERS page for fexofenadine (Allegra) (19,831 reports). Signature SEX-BALANCED. Dominant age band on file: 45-64. Educational reference only.
Counts from the openFDA FAERS extract (2004–2025). Stamps WATCHLIST · DEATH-MARKED · HOSP-MID · SEX-BALANCED.
HEADACHE leads 878 of 19,831 reports
Who reports · age peak 45-64 (SEX-BALANCED)
Sex coding · SEX-BALANCED
Age peak 45-64 (2,846 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death appears on 549 reports (2.8% - MARKED). Reactions below co-occur in those rows only.
| Reaction | Reports |
|---|---|
| DEATH | 171 |
| PNEUMONIA | 58 |
| MALIGNANT NEOPLASM PROGRESSION | 30 |
| PYREXIA | 30 |
| DIARRHOEA | 29 |
| PLATELET COUNT DECREASED | 25 |
| SEPSIS | 25 |
| FALL | 22 |
| INTERSTITIAL LUNG DISEASE | 22 |
| DYSPNOEA | 21 |
| SEPTIC SHOCK | 20 |
| HEPATIC FUNCTION ABNORMAL | 19 |
| NAUSEA | 19 |
| RESPIRATORY FAILURE | 19 |
| ACUTE KIDNEY INJURY | 17 |
| CARDIAC ARREST | 17 |
| CONSTIPATION | 16 |
| DECREASED APPETITE | 16 |
| PNEUMONIA ASPIRATION | 16 |
| ANAEMIA | 15 |
Reactions in Hospitalization Reports
Hospitalization mid-share (2,701, 13.6%). Co-reported reactions:
| Reaction | Reports |
|---|---|
| PNEUMONIA | 238 |
| NAUSEA | 210 |
| DIARRHOEA | 206 |
| FATIGUE | 183 |
| DYSPNOEA | 161 |
| PYREXIA | 156 |
| FALL | 153 |
| VOMITING | 150 |
| PAIN | 144 |
| HEADACHE | 143 |
| DIZZINESS | 133 |
| RASH | 131 |
| MALAISE | 117 |
| COVID-19 | 116 |
| COUGH | 100 |
| DECREASED APPETITE | 100 |
| SINUSITIS | 100 |
| URINARY TRACT INFECTION | 96 |
| PRURITUS | 92 |
How to read fexofenadine FAERS figures (WATCHLIST · DEATH-MARKED · HOSP-MID)
FAERS holds 19,831 voluntary reports linked to fexofenadine (Allegra), 2004-2025. Death is listed on 549 (2.8%). Hospitalization appears on 2,701 (13.6%). Top co-reported indication: Product Used For Unknown Indication.
Mid-volume extract - treat DEATH-MARKED · HOSP-MID as signal-detection rates next to 69% of sex-coded reports are female (10,792 F / 4,893 M).
Read with fexofenadine
Peers ranked by ABS(total_reports), then an ABS(death_share) pole; guide hop follows DEATH-MARKED · HOSP-MID stamps.
ABS(total_reports) peer at 19,772 FAERS cases (Δ 59 lighter vs fexofenadine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-MARKED · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 19,891 FAERS cases (Δ 60 heavier vs fexofenadine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-MARKED · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 19,947 FAERS cases (Δ 116 heavier vs fexofenadine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-MARKED · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 20,197 FAERS cases (Δ 366 heavier vs fexofenadine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-MARKED · HOSP-MID · SEX-BALANCED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 59.3 pp vs fexofenadine's DEATH-MARKED): CASELOAD · HOSP-MID.
fexofenadine stamps WATCHLIST · SEX-BALANCED; class peers and methodology beat restating the same FAERS caveats on every effects URL.