OpenClaim

Thiabendazole Side Effects

The most commonly reported side effects of thiabendazole include strongyloidiasis, off label use, and microalbuminuria, based on 55 FDA adverse event reports from 2004 to 2025. 9.1% of reports found the drug to be ineffective.

Thiabendazole side effects

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

1
Strongyloidiasis10.9%6
2
Off Label Use10.9%6
3
Drug Ineffective9.1%5
4
Drug Ineffective9.1%5
5
Microalbuminuria9.1%5
6
Vomiting7.3%4
7
Chronic Kidney Disease7.3%4
8
Body Mass Index Abnormal7.3%4
9
Dyslipidaemia7.3%4
10
Hypertension7.3%4
11
Dizziness5.5%3
12
Meningitis5.5%3
13
Arthralgia5.5%3
14
Rash3.6%2
15
Lung Disorder3.6%2

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

Report severity

87.3%Serious48 reports
30.9%Hospitalizations17 reports
18.2%Fatal10 reports

Seriousness is determined by the reporter, not by OpenClaim.

Thiabendazole drug interactions

Other drugs that appear in adverse event reports alongside thiabendazole. 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
Amlodipine12.7%7
2
Vincristine-sulfate10.9%6
3
Doxorubicin-hydrochloride10.9%6
4
Metformin10.9%6
5
Cytarabine9.1%5
6
Cyclophosphamide9.1%5
7
Hydrochlorothiazide9.1%5
8
Dapagliflozin9.1%5
9
Insulin9.1%5
10
Prednisolone7.3%4
11
Denosumab7.3%4
12
Ezetimibe7.3%4
13
Omeprazole7.3%4
14
Ivermectin5.5%3
15
Dexamethasone5.5%3

Taken alongside

1
Sulfamethoxazole14.5%8
2
Trimethoprim14.5%8
3
Acyclovir12.7%7
4
Atorvastatin-calcium9.1%5
5
Pantoprazole-sodium7.3%4
6
Ciprofloxacin7.3%4
7
Itraconazole7.3%4
8
Ergocalciferol7.3%4
9
Aspirin5.5%3
10
Dexamethasone5.5%3
11
Fluconazole5.5%3
12
Metformin5.5%3
13
Gabapentin5.5%3
14
Acetaminophen5.5%3
15
Potassium-chloride3.6%2

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 thiabendazole side effects

38.2% of thiabendazole adverse event reports involve female patients and 45.5% involve male patients. The largest age group is elderly at 51%. These figures reflect who reports side effects, not underlying risk.

Sex

Female38.2%
Male45.5%
Unknown16.4%

Age group

< 22.2%
2–112.2%
12–170.0%
18–6444.4%
65+51.1%

What is thiabendazole used for

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

Chronic GastritisDiabetes MellitusHelminthic InfectionHookworm InfectionParasitic Infection ProphylaxisProduct Used For Unknown IndicationProduct Used For Unknown IndicationPsoriasisSomatic DelusionStrongyloidiasisThyroid DisorderToxocariasis

Thiabendazole brand names and reporting trend

Thiabendazole is sold under the brand name Mintezol.

Brand names

Mintezol43

Quarterly reports (20042025)

200420102025

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

Taking thiabendazole with another medication?

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