HIGH-VOLUME · HOSP-HEAVY
ferrous sulfate Side Effects
ferrous sulfate (also sold as Feosol, Fer-In-Sol) is HIGH-VOLUME in this FAERS book #145 of 524 by FAERS report count. Signature opener: HOSP-HEAVY - 43.4% mention hospitalization (20,748 reports).
Data updated 2026-05-15
- 47,788
- FAERS reports
FAERS voluntary reports, 1995 to 2025. High volume tracks exposure and reporting culture; see methodology for de-dup rules.
ferrous sulfate: 43.4% mention hospitalization (20,748 reports). Death stamp DEATH-HEAVY; volume band HIGH-VOLUME #145 of 524 by FAERS report count.
High-report extract for ferrous sulfate (Feosol): 47,788 FAERS rows (1995-2025). Top named reactions: FATIGUE, DIARRHOEA, NAUSEA. Outcome stamps DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED. FAERS is voluntary signal detection, not incidence.
Counts from the openFDA FAERS extract (1995–2025). Stamps CASELOAD · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
FATIGUE leads 3,325 of 47,788 reports
Who reports · age peak 75+ (SEX-BALANCED)
Sex coding · SEX-BALANCED
Age peak 75+ (9,412 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death-mentioned subset is HEAVY here (5,418 reports, 11.3%). Top co-reported reactions in that subset - voluntary, not causal.
| Reaction | Reports |
|---|---|
| DEATH | 2,335 |
| DYSPNOEA | 397 |
| ACUTE KIDNEY INJURY | 386 |
| PNEUMONIA | 361 |
| RENAL FAILURE | 304 |
| ANAEMIA | 265 |
| GASTROINTESTINAL HAEMORRHAGE | 242 |
| FATIGUE | 237 |
| SEPSIS | 237 |
| CHRONIC KIDNEY DISEASE | 232 |
| ASTHENIA | 223 |
| FALL | 218 |
| HYPOTENSION | 210 |
| NAUSEA | 206 |
| RESPIRATORY FAILURE | 206 |
| CARDIAC ARREST | 203 |
| DIARRHOEA | 201 |
| VOMITING | 195 |
| CARDIAC FAILURE CONGESTIVE | 169 |
Reactions in Hospitalization Reports
Hospitalization is HEAVY (20,748, 43.4% of the book). Top reactions in those rows:
| Reaction | Reports |
|---|---|
| DYSPNOEA | 1,732 |
| PNEUMONIA | 1,597 |
| DIARRHOEA | 1,396 |
| ACUTE KIDNEY INJURY | 1,375 |
| ANAEMIA | 1,343 |
| FATIGUE | 1,210 |
| FALL | 1,203 |
| NAUSEA | 1,180 |
| ASTHENIA | 1,098 |
| VOMITING | 1,028 |
| GASTROINTESTINAL HAEMORRHAGE | 968 |
| PYREXIA | 920 |
| HYPOTENSION | 856 |
| PAIN | 832 |
| URINARY TRACT INFECTION | 829 |
| DIZZINESS | 828 |
| HEADACHE | 746 |
| HAEMOGLOBIN DECREASED | 715 |
| WEIGHT DECREASED | 712 |
How to read ferrous sulfate FAERS figures (CASELOAD · DEATH-HEAVY · HOSP-HEAVY)
FAERS holds 47,788 voluntary reports linked to ferrous sulfate (Feosol, Fer-In-Sol), 1995-2025. Death is listed on 5,418 (11.3%). Hospitalization appears on 20,748 (43.4%). Top co-reported indication: Product Used For Unknown Indication.
CASELOAD books overweight common drugs and loud reporting cultures; HOSP-HEAVY is the page opener, not a per-patient risk.
Read with ferrous sulfate
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 47,843 FAERS cases (Δ 55 heavier vs ferrous sulfate); DEATH-MARKED · HOSP-MID · SEX-BALANCED vs this page's CASELOAD · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 47,513 FAERS cases (Δ 275 lighter vs ferrous sulfate); DEATH-MARKED · HOSP-LIGHT · SEX-BALANCED vs this page's CASELOAD · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 48,091 FAERS cases (Δ 303 heavier vs ferrous sulfate); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's CASELOAD · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 47,426 FAERS cases (Δ 362 lighter vs ferrous sulfate); DEATH-HEAVY · HOSP-MID · FEMALE-LED vs this page's CASELOAD · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 50.8 pp vs ferrous sulfate's DEATH-HEAVY): CASELOAD · HOSP-MID.
ferrous sulfate stamps DEATH-HEAVY · HOSP-HEAVY; FAERS outcome shares are signal-detection rates, not incidence. Read them next to caseload CASELOAD and the label guide.