Hyzaarlosartan + hydrochlorothiazide
According to the FDA label: HYZAAR is a combination of losartan, an angiotensin II receptor blocker (ARB) and hydrochlorothiazide, a diuretic indicated for: Treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. ( 1.1 ) Reduction of the risk of stroke in patients with hypertension and left ventricular hypertrophy. There is evidence that this benefit does not apply to Black patients.
11,486 adverse event reports submitted to the FDA (2003–2026)
Top Reported Adverse Events
The most frequently reported events in association with Hyzaar in the FAERS database. These are events reported by patients taking this medication, not necessarily caused by it. A single report may include multiple events.
Show these terms with plain-language definitions
Tap any term below for a plain-language definition.
Nausea 772 reports
The feeling of sickness in your stomach that often comes before vomiting.
Full definition in the glossary → See all drugs reporting this event →Drug Ineffective 737 reports
A report that the medication did not work as expected for the person taking it. This is a reporting category, not a sign the drug is defective. It simply means someone felt it was not helping their condition.
Full definition in the glossary →Fatigue 684 reports
Extreme tiredness or lack of energy that does not improve with rest.
Full definition in the glossary → See all drugs reporting this event →Dizziness 585 reports
A feeling of being lightheaded, unsteady, or like the room is spinning.
Full definition in the glossary → See all drugs reporting this event →Headache 562 reports
Pain in the head or upper neck.
Full definition in the glossary → See all drugs reporting this event →Diarrhoea 530 reports
Loose or watery bowel movements, often frequent. Also spelled diarrhea in American English.
Full definition in the glossary → See all drugs reporting this event →Pain 511 reports
A general report of physical discomfort, used when no more specific location is given.
Full definition in the glossary →Dyspnoea 505 reports
Shortness of breath or difficulty breathing. Also spelled dyspnea in American English.
Full definition in the glossary → See all drugs reporting this event →Arthralgia 452 reports
Asthenia 448 reports
Physical weakness or lack of strength.
Full definition in the glossary →Vomiting 402 reports
Throwing up the contents of the stomach.
Full definition in the glossary → See all drugs reporting this event →Hypertension 375 reports
Blood Pressure Increased 358 reports
A reading showing higher than normal blood pressure. Similar to hypertension, which describes the ongoing condition.
Full definition in the glossary →Malaise 351 reports
A general feeling of being unwell or uncomfortable, without a specific symptom.
Full definition in the glossary →Fall 345 reports
A report that the person fell down. Falls are tracked because they can signal issues like dizziness, weakness, or balance problems.
Full definition in the glossary →
Ranked by frequency of reports, not severity. The most-reported event is not necessarily the most dangerous or the most common in patients taking this drug.
Who Is Reporting
Demographics of patients in FAERS reports that included this information. Not all reports include patient demographics.
By Sex
View reporter sex data as a table
| Sex | Reports |
|---|---|
| Female | 7,162 |
| Male | 3,914 |
| Unknown | 9 |
By Age Group
View age group data as a table
| Age group | Reports |
|---|---|
| 0-17 | 13 |
| 18-34 | 79 |
| 35-49 | 670 |
| 50-64 | 2,573 |
| 65-74 | 2,366 |
| 75+ | 1,927 |
This shows who filed reports, reflecting who takes this drug and who tends to report, not who is at greatest risk.
Reported Outcomes
Outcomes recorded in FAERS reports that included Hyzaar. A single report may involve multiple reactions, each with a different outcome. These categories are defined by FDA reporting guidelines, not by PillSignal.
View outcome data as a table
| Outcome | Reports |
|---|---|
| Other Serious | 4,292 |
| Non-Serious | 4,038 |
| Hospitalization | 4,012 |
| Death | 692 |
| Disability | 468 |
| Life-Threatening | 424 |
Serious outcomes are far more likely to be reported than mild ones, so this overstates how often outcomes are serious. A recorded death does not mean the drug caused it.
Report Volume Over Time
Number of FAERS reports received per quarter for Hyzaar. Changes in volume may reflect shifts in prescribing rates, media attention, or reporting behavior, not changes in the medication's safety profile.
View report trend as a table
| Year | Reports |
|---|---|
| 2003 | 1 |
| 2004 | 470 |
| 2005 | 590 |
| 2006 | 625 |
| 2007 | 620 |
| 2008 | 610 |
| 2009 | 677 |
| 2010 | 843 |
| 2011 | 765 |
| 2012 | 760 |
| 2013 | 445 |
| 2014 | 616 |
| 2015 | 652 |
| 2016 | 722 |
| 2017 | 493 |
| 2018 | 506 |
| 2019 | 568 |
| 2020 | 382 |
| 2021 | 233 |
| 2022 | 275 |
| 2023 | 190 |
| 2024 | 180 |
| 2025 | 224 |
| 2026 (partial) | 39 |
The steep increase around 2004 reflects the FDA's move to electronic submission, not a change in this drug's safety. Trends track reporting volume, not risk.
Medications commonly reported with Hyzaar
In FDA adverse event reports that mention Hyzaar, these medications appeared most often in the same report.
- Aspirin (2,013 reports)
- Atorvastatin (1,445 reports)
- Levothyroxine (1,255 reports)
- Amlodipine (1,213 reports)
- Omeprazole (1,128 reports)
This reflects co-occurrence in submitted reports, not evidence of drug interaction or combined risk. People often report several medications taken for the same condition or for unrelated reasons. Talk to a doctor or pharmacist about your specific medications.
Related Drugs
Other medications with similar adverse event profiles in FDA FAERS reports.
Data Source
This data is sourced from the FDA's Adverse Event Monitoring System (AEMS), formerly FAERS, via the OpenFDA API. PillSignal is not affiliated with the FDA.
View this data on the FDA website →Data last updated: June 2026