MID-VOLUME · HOSP-HEAVY
cefazolin Side Effects
cefazolin (also sold as Ancef, Kefzol) sits MID-VOLUME #332 of 524 by FAERS report count. Lead signal: HOSP-HEAVY - 51.5% mention hospitalization (4,522 reports). Demographics and serious-outcome tables follow.
Data updated 2026-05-15
- 8,788
- FAERS reports
FDA Adverse Event Reporting System extract for cefazolin. Stamp set WATCHLIST · DEATH-HEAVY · HOSP-HEAVY. How figures are compiled.
cefazolin: 51.5% mention hospitalization (4,522 reports). Death stamp DEATH-HEAVY; volume band MID-VOLUME #332 of 524 by FAERS report count.
Mid-book FAERS page for cefazolin (Ancef) (8,788 reports). Signature HOSP-HEAVY. Dominant age band on file: 45-64. Educational reference only.
Counts from the openFDA FAERS extract (2004–2025). Stamps WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
HYPOTENSION leads 542 of 8,788 reports
Who reports · age peak 45-64 (SEX-BALANCED)
Sex coding · SEX-BALANCED
Age peak 45-64 (2,325 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death-mentioned subset is HEAVY here (1,005 reports, 11.4%). Top co-reported reactions in that subset - voluntary, not causal.
| Reaction | Reports |
|---|---|
| DEATH | 180 |
| RENAL FAILURE | 176 |
| PAIN | 132 |
| INJURY | 118 |
| ANXIETY | 110 |
| UNEVALUABLE EVENT | 103 |
| MULTI-ORGAN FAILURE | 91 |
| RENAL INJURY | 91 |
| FEAR | 86 |
| CARDIAC ARREST | 85 |
| EMOTIONAL DISTRESS | 84 |
| RENAL IMPAIRMENT | 82 |
| ANHEDONIA | 77 |
| HYPOTENSION | 74 |
| STRESS | 71 |
| SEPSIS | 70 |
| RESPIRATORY FAILURE | 69 |
| PNEUMONIA | 64 |
| PYREXIA | 58 |
Reactions in Hospitalization Reports
Hospitalization is HEAVY (4,522, 51.5% of the book). Top reactions in those rows:
| Reaction | Reports |
|---|---|
| RASH | 282 |
| PYREXIA | 253 |
| HYPOTENSION | 244 |
| RENAL FAILURE | 214 |
| PAIN | 207 |
| ACUTE KIDNEY INJURY | 206 |
| ANAPHYLACTIC REACTION | 194 |
| DRUG INTERACTION | 174 |
| NAUSEA | 162 |
| DYSPNOEA | 154 |
| ANXIETY | 153 |
| DRUG HYPERSENSITIVITY | 147 |
| VOMITING | 142 |
| DIARRHOEA | 140 |
| INFECTION | 138 |
| CELLULITIS | 135 |
| URTICARIA | 130 |
| PNEUMONIA | 129 |
How to read cefazolin FAERS figures (WATCHLIST · DEATH-HEAVY · HOSP-HEAVY)
FAERS holds 8,788 voluntary reports linked to cefazolin (Ancef, Kefzol), 2004-2025. Death is listed on 1,005 (11.4%). Hospitalization appears on 4,522 (51.5%). Top co-reported indication: Product Used For Unknown Indication.
Mid-volume extract - treat DEATH-HEAVY · HOSP-HEAVY as signal-detection rates next to 51.5% mention hospitalization (4,522 reports).
Read with cefazolin
Peers ranked by ABS(total_reports), then an ABS(death_share) pole; guide hop follows DEATH-HEAVY · HOSP-HEAVY stamps.
ABS(total_reports) peer at 8,756 FAERS cases (Δ 32 lighter vs cefazolin); DEATH-HEAVY · HOSP-MID · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 8,979 FAERS cases (Δ 191 heavier vs cefazolin); DEATH-HEAVY · HOSP-MID · FEMALE-LED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 8,574 FAERS cases (Δ 214 lighter vs cefazolin); DEATH-MARKED · HOSP-MID · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 8,530 FAERS cases (Δ 258 lighter vs cefazolin); DEATH-HEAVY · HOSP-MID · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 50.7 pp vs cefazolin's DEATH-HEAVY): CASELOAD · HOSP-MID.
cefazolin stamps DEATH-HEAVY · HOSP-HEAVY; FAERS outcome shares are signal-detection rates, not incidence. Read them next to caseload WATCHLIST and the label guide.