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Pinworm Medicine Side Effects

Generic name: pyrantel

Medically reviewed by Last updated on Jul 22, 2022.

Note: This document contains side effect information about pyrantel. Some dosage forms listed on this page may not apply to the brand name Pinworm Medicine.

Applies to pyrantel: oral suspension.

Side effects include:

GI disturbances (nausea, vomiting, tenesmus, anorexia, diarrhea, abdominal cramps, gastralgia), headache, dizziness.

For Healthcare Professionals

Applies to pyrantel: compounding powder, oral suspension, oral tablet.


Frequency not reported: Nausea, vomiting, diarrhea, abdominal cramps, abdominal discomfort[Ref]

Nervous system

Frequency not reported: Headache, dizziness, drowsiness[Ref]


Frequency not reported: Minor abnormalities of liver function, transient increases in liver enzymes values[Ref]


Frequency not reported: Anorexia


Frequency not reported: Insomnia


Frequency not reported: Fatigue


Frequency not reported: Skin rashes[Ref]

Frequently asked questions


1. "Product Information. Pinworm Medicine (pyrantel)." Reese Chemical Company (2005):

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.