LOW-VOLUME · FEMALE-LED
butorphanol Side Effects
butorphanol (also sold as Stadol) is a LOW-VOLUME FAERS extract #512 of 524 by FAERS report count. Still opens on FEMALE-LED: 84% of sex-coded reports are female (244 F / 48 M).
Data updated 2026-05-15
- 318
- FAERS reports
Thinner FAERS book - still a temporal association ledger, not proof of cause. Methodology.
butorphanol reporting skew - 84% of sex-coded reports are female (244 F / 48 M). Volume band LOW-VOLUME #512 of 524 by FAERS report count; caseload TRACE-CASE.
Thinner FAERS extract for butorphanol (Stadol) (318 reports #512 of 524 by FAERS report count). 84% of sex-coded reports are female (244 F / 48 M). Sparse books still carry named reaction rows when present; not medical advice.
Counts from the openFDA FAERS extract (2002–2025). Stamps TRACE-CASE · DEATH-MARKED · HOSP-MID · FEMALE-LED.
DRUG HYPERSENSITIVITY leads 48 of 318 reports
FEMALE-LED reporters · age peak 45-64
Female-led reporters (84% of sex-coded rows)
Age peak 45-64 (85 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death appears on 7 reports (2.2% - MARKED). Reactions below co-occur in those rows only.
| Reaction | Reports |
|---|---|
| CARDIAC FAILURE | 2 |
| PNEUMONIA | 2 |
| PNEUMONITIS | 2 |
| ABDOMINAL DISTENSION | 1 |
| BRAIN CONTUSION | 1 |
| BRAIN HERNIATION | 1 |
| BRAIN OEDEMA | 1 |
| BURNING SENSATION | 1 |
| CAROTID ARTERY THROMBOSIS | 1 |
| CEREBRAL HAEMORRHAGE | 1 |
| CEREBRAL INFARCTION | 1 |
| COMA | 1 |
| DEPENDENCE | 1 |
| DIZZINESS | 1 |
| DYSGEUSIA | 1 |
| EXPOSURE DURING PREGNANCY | 1 |
| LIVE BIRTH | 1 |
| MULTI-ORGAN FAILURE | 1 |
| NASAL DISORDER | 1 |
Reactions in Hospitalization Reports
Hospitalization mid-share (48, 15.1%). Co-reported reactions:
| Reaction | Reports |
|---|---|
| DYSPNOEA | 8 |
| ANXIETY | 7 |
| PAIN | 7 |
| FATIGUE | 6 |
| HEADACHE | 6 |
| NAUSEA | 6 |
| PNEUMONIA | 6 |
| DEPRESSION | 5 |
| HYPOAESTHESIA | 5 |
| CEREBROVASCULAR ACCIDENT | 4 |
| DRUG HYPERSENSITIVITY | 4 |
| FALL | 4 |
| MUSCULAR WEAKNESS | 4 |
| WEIGHT DECREASED | 4 |
| ABDOMINAL PAIN | 3 |
| ARTHRALGIA | 3 |
| BACK PAIN | 3 |
| CARDIAC DISORDER | 3 |
| CHEST PAIN | 3 |
| DIARRHOEA | 3 |
How to read butorphanol FAERS figures (TRACE-CASE · DEATH-MARKED · HOSP-MID)
FAERS holds 318 voluntary reports linked to butorphanol (Stadol), 2002-2025. Death is listed on 7 (2.2%). Hospitalization appears on 48 (15.1%). Top co-reported indication: Migraine.
Sparse extract - named reactions and FEMALE-LED skew still differ by drug; not a complete safety profile.
Read with butorphanol
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 329 FAERS cases (Δ 11 heavier vs butorphanol); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's TRACE-CASE · DEATH-MARKED · HOSP-MID · FEMALE-LED.
ABS(total_reports) peer at 299 FAERS cases (Δ 19 lighter vs butorphanol); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's TRACE-CASE · DEATH-MARKED · HOSP-MID · FEMALE-LED.
ABS(total_reports) peer at 278 FAERS cases (Δ 40 lighter vs butorphanol); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's TRACE-CASE · DEATH-MARKED · HOSP-MID · FEMALE-LED.
ABS(total_reports) peer at 408 FAERS cases (Δ 90 heavier vs butorphanol); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's TRACE-CASE · DEATH-MARKED · HOSP-MID · FEMALE-LED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 59.9 pp vs butorphanol's DEATH-MARKED): CASELOAD · HOSP-MID.
butorphanol stamps TRACE-CASE · FEMALE-LED; class peers and methodology beat restating the same FAERS caveats on every effects URL.