HIGH-VOLUME · HOSP-MID
losartan Side Effects
losartan (also sold as Cozaar) is HIGH-VOLUME in this FAERS book #40 of 524 by FAERS report count. Signature opener: HOSP-MID - 29.5% mention hospitalization (48,929 reports).
Data updated 2026-05-15
- 165,585
- FAERS reports
FAERS voluntary reports, 2001 to 2025. High volume tracks exposure and reporting culture; see methodology for de-dup rules.
losartan: 29.5% mention hospitalization (48,929 reports). Death stamp DEATH-HEAVY; volume band HIGH-VOLUME #40 of 524 by FAERS report count.
High-report extract for losartan (Cozaar): 165,585 FAERS rows (2001-2025). Top named reactions: FATIGUE, DIARRHOEA, NAUSEA. Outcome stamps DEATH-HEAVY · HOSP-MID · SEX-BALANCED. FAERS is voluntary signal detection, not incidence.
Counts from the openFDA FAERS extract (2001–2025). Stamps MEGA-CASE · DEATH-HEAVY · HOSP-MID · SEX-BALANCED.
FATIGUE leads 11,852 of 165,585 reports
Who reports · age peak 45-64 (SEX-BALANCED)
Sex coding · SEX-BALANCED
Age peak 45-64 (37,385 reports)
FAERS filings rising toward 2025
Reactions in Death Reports
Death-mentioned subset is HEAVY here (12,034 reports, 7.3%). Top co-reported reactions in that subset - voluntary, not causal.
| Reaction | Reports |
|---|---|
| DEATH | 4,651 |
| COMPLETED SUICIDE | 908 |
| PNEUMONIA | 655 |
| ACUTE KIDNEY INJURY | 531 |
| DYSPNOEA | 510 |
| RENAL FAILURE | 445 |
| CHRONIC KIDNEY DISEASE | 435 |
| CARDIAC ARREST | 431 |
| FATIGUE | 410 |
| TOXICITY TO VARIOUS AGENTS | 409 |
| CARDIO-RESPIRATORY ARREST | 403 |
| ASTHENIA | 377 |
| FALL | 375 |
| DIARRHOEA | 355 |
| MYOCARDIAL INFARCTION | 354 |
| RESPIRATORY FAILURE | 344 |
| SEPSIS | 322 |
| NAUSEA | 301 |
| VOMITING | 288 |
Reactions in Hospitalization Reports
Hospitalization mid-share (48,929, 29.5%). Co-reported reactions:
| Reaction | Reports |
|---|---|
| DYSPNOEA | 3,495 |
| PNEUMONIA | 3,299 |
| DIARRHOEA | 3,116 |
| FATIGUE | 3,042 |
| FALL | 2,861 |
| NAUSEA | 2,719 |
| ACUTE KIDNEY INJURY | 2,518 |
| ASTHENIA | 2,440 |
| VOMITING | 2,358 |
| DIZZINESS | 2,319 |
| PAIN | 2,222 |
| MALAISE | 2,135 |
| HEADACHE | 2,083 |
| WEIGHT DECREASED | 1,813 |
| HYPERTENSION | 1,793 |
| PYREXIA | 1,779 |
| URINARY TRACT INFECTION | 1,778 |
| HYPOTENSION | 1,731 |
| ARTHRALGIA | 1,596 |
How to read losartan FAERS figures (MEGA-CASE · DEATH-HEAVY · HOSP-MID)
FAERS holds 165,585 voluntary reports linked to losartan (Cozaar), 2001-2025. Death is listed on 12,034 (7.3%). Hospitalization appears on 48,929 (29.5%). Top co-reported indication: Product Used For Unknown Indication.
MEGA-CASE books overweight common drugs and loud reporting cultures; HOSP-MID is the page opener, not a per-patient risk.
Read with losartan
Peers ranked by ABS(total_reports), then an ABS(death_share) pole; guide hop follows DEATH-HEAVY · HOSP-MID stamps.
ABS(total_reports) peer at 173,086 FAERS cases (Δ 7,501 heavier vs losartan); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's MEGA-CASE · DEATH-HEAVY · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 173,227 FAERS cases (Δ 7,642 heavier vs losartan); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's MEGA-CASE · DEATH-HEAVY · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 157,236 FAERS cases (Δ 8,349 lighter vs losartan); DEATH-MARKED · HOSP-MID · SEX-BALANCED vs this page's MEGA-CASE · DEATH-HEAVY · HOSP-MID · SEX-BALANCED.
ABS(total_reports) peer at 174,469 FAERS cases (Δ 8,884 heavier vs losartan); DEATH-HEAVY · HOSP-HEAVY · SEX-BALANCED vs this page's MEGA-CASE · DEATH-HEAVY · HOSP-MID · SEX-BALANCED.
ABS(death_share) pole at 62.1% death-mentioned reports (Δ 54.8 pp vs losartan's DEATH-HEAVY): CASELOAD · HOSP-MID.
losartan stamps DEATH-HEAVY · HOSP-MID; FAERS outcome shares are signal-detection rates, not incidence. Read them next to caseload MEGA-CASE and the label guide.