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Malathion Side Effects

The most commonly reported side effects of malathion include dyspnoea, pain, and diarrhoea, based on 180 FDA adverse event reports from 2004 to 2025. 8.9% of reports found the drug to be ineffective.

Malathion side effects

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

1
Drug Ineffective8.9%16
2
Dyspnoea5.0%9
3
Pain5.0%9
4
Diarrhoea4.4%8
5
Vomiting4.4%8
6
Drug Exposure During Pregnancy4.4%8
7
Pregnancy With Injectable Contraceptive3.9%7
8
Alopecia3.3%6
9
Nausea3.3%6
10
Pain3.3%6
11
Vomiting3.3%6
12
Drug Ineffective2.8%5
13
Headache2.8%5
14
Rash2.8%5
15
Burns Second Degree2.8%5

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

Report severity

58.3%Serious105 reports
13.9%Hospitalizations25 reports
1.1%Fatal2 reports

Seriousness is determined by the reporter, not by OpenClaim.

Malathion drug interactions

Other drugs that appear in adverse event reports alongside malathion. 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
Permethrin10.6%19
2
Cetirizine-hydrochloride6.7%12
3
Adalimumab6.7%12
4
Medroxyprogesterone-acetate5.6%10
5
Trimethoprim5.6%10
6
Niacin3.3%6
7
Paroxetine2.2%4
8
Ibuprofen2.2%4
9
Lindane1.7%3
10
Piperonyl-butoxide1.7%3
11
Pyrethrins1.7%3
12
Warfarin1.1%2
13
Acetaminophen1.1%2
14
Oxycodone1.1%2
15
Clarithromycin1.1%2

Taken alongside

1
Acetaminophen7.8%14
2
Aspirin6.1%11
3
Albuterol5.6%10
4
Ibuprofen5.6%10
5
Fluticasone5.0%9
6
Levothyroxine-sodium5.0%9
7
Ergocalciferol4.4%8
8
Prednisone4.4%8
9
Paroxetine3.9%7
10
Azithromycin3.9%7
11
Metoprolol3.9%7
12
Salmeterol-xinafoate3.9%7
13
Furosemide3.3%6
14
Omeprazole3.3%6
15
Clonazepam3.3%6

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 malathion side effects

68.9% of malathion adverse event reports involve female patients and 25.0% involve male patients. The largest age group is adult at 45%. These figures reflect who reports side effects, not underlying risk.

Sex

Female68.9%
Male25.0%
Unknown6.1%

Age group

< 20.7%
2–1123.1%
12–1714.9%
18–6444.8%
65+16.4%

What is malathion used for

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

AcarodermatitisAccidental ExposureColorectal Cancer MetastaticConstipationContraceptionCoronary Artery DiseaseDiabetes Mellitus ManagementDrug Use For Unknown IndicationExposure Via InhalationEye DisorderFracture PainHead LiceHepatitis CLice InfestationLice Infestation

Showing 15 of 25 indications

Malathion brand names and reporting trend

Malathion is sold under the brand name Ovide.

Brand names

Ovide78

Quarterly reports (20042025)

2005201020202025

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

Taking malathion with another medication?

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