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Ascarel Side Effects

Generic Name: pyrantel

Note: This page contains information about the side effects of pyrantel. Some of the dosage forms included on this document may not apply to the brand name Ascarel.

For the Consumer

Applies to pyrantel: oral suspension, oral tablet, oral tablet chewable

In addition to its needed effects, some unwanted effects may be caused by pyrantel (the active ingredient contained in Ascarel). In the event that any of these side effects do occur, they may require medical attention.

Severity: Moderate

If any of the following side effects occur while taking pyrantel, check with your doctor or nurse as soon as possible:

  • Skin rash

Minor Side Effects

Some of the side effects that can occur with pyrantel may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

Less common:
  • Abdominal or stomach cramps or pain
  • diarrhea
  • dizziness
  • drowsiness
  • headache
  • irritability
  • loss of appetite
  • nausea or vomiting
  • trouble in sleeping

For Healthcare Professionals

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


Gastrointestinal side effects have included nausea, vomiting, diarrhea, abdominal cramps.[Ref]


Dermatologic side effects have included skin rashes.[Ref]


Hepatic side effects have included transient increases in liver enzymes values.[Ref]

Nervous system

Nervous system side effects have included dizziness, drowsiness, insomnia, and headache.[Ref]


1. "Product Information. Pinworm Medicine (pyrantel)." Reese Chemical Company, Cleveland, OH.

2. "Multum Information Services, Inc. Expert Review Panel"

Not all side effects for Ascarel may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.