LOW-VOLUME · FEMALE-LED
phenylephrine Side Effects
phenylephrine (also sold as Neo-Synephrine) is a LOW-VOLUME FAERS extract #414 of 524 by FAERS report count. Still opens on FEMALE-LED: 83% of sex-coded reports are female (2,480 F / 495 M).
Data updated 2026-05-15
- 3,669
- FAERS reports
Thinner FAERS book - still a temporal association ledger, not proof of cause. Methodology.
phenylephrine reporting skew - 83% of sex-coded reports are female (2,480 F / 495 M). Volume band LOW-VOLUME #414 of 524 by FAERS report count; caseload SIGNAL.
Thinner FAERS extract for phenylephrine (Neo-Synephrine) (3,669 reports #414 of 524 by FAERS report count). 83% of sex-coded reports are female (2,480 F / 495 M). Sparse books still carry named reaction rows when present; not medical advice.
Counts from the openFDA FAERS extract (2004–2025). Stamps SIGNAL · DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED.
PEMPHIGUS leads 948 of 3,669 reports
FEMALE-LED reporters · age peak 18-44
Female-led reporters (83% of sex-coded rows)
Age peak 18-44 (1,351 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death-mentioned subset is HEAVY here (1,539 reports, 41.9%). Top co-reported reactions in that subset - voluntary, not causal.
| Reaction | Reports |
|---|---|
| FOLLICULITIS | 642 |
| HYPOAESTHESIA | 641 |
| TYPE 2 DIABETES MELLITUS | 641 |
| PEMPHIGUS | 626 |
| SYNOVITIS | 625 |
| SYSTEMIC LUPUS ERYTHEMATOSUS | 622 |
| INFUSION RELATED REACTION | 609 |
| WOUND | 600 |
| GLOSSODYNIA | 598 |
| CONDITION AGGRAVATED | 596 |
| MATERNAL EXPOSURE DURING PREGNANCY | 593 |
| PSORIATIC ARTHROPATHY | 593 |
| RHEUMATOID ARTHRITIS | 592 |
| GENERAL PHYSICAL HEALTH DETERIORATION | 583 |
| PNEUMONIA | 576 |
| WEIGHT INCREASED | 572 |
| MOBILITY DECREASED | 568 |
| PAIN | 565 |
Reactions in Hospitalization Reports
Hospitalization is HEAVY (1,983, 54.0% of the book). Top reactions in those rows:
| Reaction | Reports |
|---|---|
| CONDITION AGGRAVATED | 672 |
| PAIN | 653 |
| MOBILITY DECREASED | 650 |
| JOINT SWELLING | 649 |
| FOLLICULITIS | 634 |
| HYPOAESTHESIA | 630 |
| SYNOVITIS | 619 |
| TYPE 2 DIABETES MELLITUS | 619 |
| WOUND | 617 |
| ARTHROPATHY | 608 |
| PEMPHIGUS | 608 |
| SYSTEMIC LUPUS ERYTHEMATOSUS | 602 |
| RHEUMATOID ARTHRITIS | 599 |
| INFUSION RELATED REACTION | 595 |
| ARTHRALGIA | 591 |
| WEIGHT INCREASED | 591 |
| PNEUMONIA | 589 |
| PAIN IN EXTREMITY | 585 |
| GLOSSODYNIA | 583 |
How to read phenylephrine FAERS figures (SIGNAL · DEATH-HEAVY · HOSP-HEAVY)
FAERS holds 3,669 voluntary reports linked to phenylephrine (Neo-Synephrine), 2004-2025. Death is listed on 1,539 (41.9%). Hospitalization appears on 1,983 (54.0%). Top co-reported indication: Product Used For Unknown Indication.
Sparse extract - named reactions and FEMALE-LED skew still differ by drug; not a complete safety profile.
Read with phenylephrine
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 3,682 FAERS cases (Δ 13 heavier vs phenylephrine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's SIGNAL · DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED.
ABS(total_reports) peer at 3,736 FAERS cases (Δ 67 heavier vs phenylephrine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's SIGNAL · DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED.
ABS(total_reports) peer at 3,599 FAERS cases (Δ 70 lighter vs phenylephrine); DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED vs this page's SIGNAL · DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED.
ABS(total_reports) peer at 3,554 FAERS cases (Δ 115 lighter vs phenylephrine); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's SIGNAL · DEATH-HEAVY · HOSP-HEAVY · FEMALE-LED.
ABS(death_share) pole at 0.0% death-mentioned reports (Δ 41.9 pp vs phenylephrine's DEATH-HEAVY): MEGA-CASE · HOSP-LIGHT.
phenylephrine stamps DEATH-HEAVY · HOSP-HEAVY; FAERS outcome shares are signal-detection rates, not incidence. Read them next to caseload SIGNAL and the label guide.