MID-VOLUME · HOSP-HEAVY
fondaparinux Side Effects
fondaparinux (also sold as Arixtra) sits MID-VOLUME #343 of 524 by FAERS report count. Lead signal: HOSP-HEAVY - 53.1% mention hospitalization (4,235 reports). Demographics and serious-outcome tables follow.
Data updated 2026-05-15
- 7,980
- FAERS reports
FDA Adverse Event Reporting System extract for fondaparinux. Stamp set WATCHLIST · DEATH-HEAVY · HOSP-HEAVY. How figures are compiled.
fondaparinux: 53.1% mention hospitalization (4,235 reports). Death stamp DEATH-HEAVY; volume band MID-VOLUME #343 of 524 by FAERS report count.
Mid-book FAERS page for fondaparinux (Arixtra) (7,980 reports). Signature HOSP-HEAVY. Dominant age band on file: 75+. Educational reference only.
Counts from the openFDA FAERS extract (2004–2025). Stamps WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ANAEMIA leads 610 of 7,980 reports
Who reports · age peak 75+ (SEX-BALANCED)
Sex coding · SEX-BALANCED
Age peak 75+ (1,683 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death-mentioned subset is HEAVY here (1,436 reports, 18.0%). Top co-reported reactions in that subset - voluntary, not causal.
| Reaction | Reports |
|---|---|
| DEATH | 294 |
| CEREBRAL HAEMORRHAGE | 124 |
| PULMONARY EMBOLISM | 117 |
| ANAEMIA | 84 |
| HAEMORRHAGE | 78 |
| SHOCK HAEMORRHAGIC | 76 |
| HAEMATOMA | 69 |
| SEPSIS | 69 |
| COMA | 62 |
| THROMBOCYTOPENIA | 61 |
| GENERAL PHYSICAL HEALTH DETERIORATION | 57 |
| CARDIAC ARREST | 53 |
| RENAL FAILURE | 49 |
| HYPOTENSION | 48 |
| MALIGNANT NEOPLASM PROGRESSION | 48 |
| DYSPNOEA | 46 |
| GASTROINTESTINAL HAEMORRHAGE | 45 |
| FALL | 43 |
| PNEUMONIA | 43 |
Reactions in Hospitalization Reports
Hospitalization is HEAVY (4,235, 53.1% of the book). Top reactions in those rows:
| Reaction | Reports |
|---|---|
| ANAEMIA | 476 |
| HAEMATOMA | 429 |
| PULMONARY EMBOLISM | 270 |
| HAEMOGLOBIN DECREASED | 221 |
| DYSPNOEA | 191 |
| DEEP VEIN THROMBOSIS | 190 |
| ABDOMINAL PAIN | 177 |
| MUSCLE HAEMORRHAGE | 172 |
| THROMBOCYTOPENIA | 169 |
| HAEMORRHAGE | 165 |
| VOMITING | 163 |
| PYREXIA | 162 |
| INCORRECT DRUG ADMINISTRATION DURATION | 159 |
| DIARRHOEA | 158 |
| NAUSEA | 149 |
| HYPOTENSION | 147 |
| THROMBOSIS | 142 |
| PAIN IN EXTREMITY | 139 |
How to read fondaparinux FAERS figures (WATCHLIST · DEATH-HEAVY · HOSP-HEAVY)
FAERS holds 7,980 voluntary reports linked to fondaparinux (Arixtra), 2004-2025. Death is listed on 1,436 (18.0%). Hospitalization appears on 4,235 (53.1%). Top co-reported indication: Product Used For Unknown Indication.
Mid-volume extract - treat DEATH-HEAVY · HOSP-HEAVY as signal-detection rates next to 53.1% mention hospitalization (4,235 reports).
Read with fondaparinux
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 8,078 FAERS cases (Δ 98 heavier vs fondaparinux); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 7,881 FAERS cases (Δ 99 lighter vs fondaparinux); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 8,141 FAERS cases (Δ 161 heavier vs fondaparinux); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(total_reports) peer at 7,819 FAERS cases (Δ 161 lighter vs fondaparinux); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's WATCHLIST · DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 44.1 pp vs fondaparinux's DEATH-HEAVY): CASELOAD · HOSP-MID.
fondaparinux stamps DEATH-HEAVY · HOSP-HEAVY; FAERS outcome shares are signal-detection rates, not incidence. Read them next to caseload WATCHLIST and the label guide.