OpenClaim

Elbasvir Side Effects

The most commonly reported side effects of elbasvir include fatigue, headache, and nausea, based on 4,702 FDA adverse event reports from 2016 to 2025. 6.4% of reports found the drug to be ineffective.

Elbasvir side effects

Percentages show how often each reaction appears relative to total reports for elbasvir.

1
Fatigue24.1%1,133
2
Headache19.0%892
3
Nausea15.3%720
4
Diarrhoea8.3%391
5
Insomnia7.8%368
6
Vomiting6.7%316
7
Pain6.6%312
8
Drug Ineffective6.4%300
9
Off Label Use6.2%291
10
Arthralgia6.2%290
11
Pemphigus6.0%283
12
Abdominal Discomfort5.9%277
13
Alopecia5.9%276
14
Joint Swelling5.8%272
15
Pruritus5.7%267

These are voluntary reports and do not establish that elbasvir caused these reactions.

Report severity

40.1%Serious1,887 reports
18.1%Hospitalizations849 reports
5.5%Fatal259 reports

Seriousness is determined by the reporter, not by OpenClaim.

Elbasvir drug interactions

Other drugs that appear in adverse event reports alongside elbasvir. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Grazoprevir86.9%4,087
2
Abatacept10.1%475
3
Rituximab9.2%434
4
Infliximab9.2%434
5
Adalimumab9.2%433
6
Methotrexate9.2%432
7
Tocilizumab9.0%425
8
Leflunomide9.0%421
9
Etanercept8.9%420
10
Alendronate-sodium8.9%417
11
Certolizumab-pegol8.9%417
12
Prednisone8.8%413
13
Sulfasalazine8.8%413
14
Diclofenac8.7%408
15
Hydroxychloroquine-sulfate8.7%408

Taken alongside

1
Lisinopril11.8%554
2
Pantoprazole-sodium10.4%487
3
Ibuprofen10.3%482
4
Ergocalciferol10.0%469
5
Quetiapine-fumarate8.8%416
6
Cyanocobalamin8.1%379
7
Ramipril8.0%377
8
Lorazepam7.9%372
9
Caffeine7.7%364
10
Sulfasalazine7.2%340
11
Acetaminophen7.1%335
12
Risedronate-sodium7.1%334
13
Cholecalciferol7.1%332
14
Calcium7.0%331
15
Magnesium-acetate-tetrahydrate6.7%313

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports elbasvir side effects

44.8% of elbasvir adverse event reports involve female patients and 42.5% involve male patients. The largest age group is adult at 80%. These figures reflect who reports side effects, not underlying risk.

Sex

Female44.8%
Male42.5%
Unknown12.7%

Age group

< 2<0.1%
2–110.0%
12–17<0.1%
18–6479.9%
65+19.9%

What is elbasvir used for

Conditions and purposes for which patients were taking elbasvir when the adverse event was reported.

Acute Hepatitis CAntiviral TreatmentAnxietyAnxiety DisorderArteriosclerosisArthritisAsthmaAtrial FibrillationAtrial FlutterCardiac FailureChild-pugh-turcotte Score IncreasedCholangiogram AbnormalChronic Hepatic FailureChronic HepatitisChronic Hepatitis C

Showing 15 of 82 indications

Elbasvir brand names and reporting trend

Elbasvir is sold under the brand name Zepatier.

Brand names

Zepatier518

Quarterly reports (20162025)

2016202020242025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking elbasvir with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.