Pyrantel pamoate

Pyrantel pamoate
Adult Indications & Dosage
Pediatric Indications & Dosage
Contraindications
Warnings & Precautions
Adverse Reactions
Drug Interactions
Use in Specific Populations
Administration & Monitoring
Overdosage
Pharmacology
Clinical Studies
How Supplied
Images
Patient Counseling Information
Precautions with Alcohol
Brand Names
Look-Alike Names

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Gloria Picoy [2]

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Overview

Pyrantel pamoate is an anthelmintic that is FDA approved for the treatment of pinworms. Common adverse reactions include diarrhea, nausea, vomiting, dizziness, headache and somnolence.

Adult Indications and Dosage

FDA-Labeled Indications and Dosage (Adult)

• Pyrantel Pamoate Suspension is used for the treatment of pinworms.
• Dosage:

• 63-87 lbs. (29-39 kg): 1 1/2 teaspoonful (7.5 mL)
• 88-112 lbs. (40-50 kg): 2 teaspoonful (10.0 mL)
• 113-137 lbs. (51-62 kg): 2 1/2 teaspoonful (12.5 mL)
• 138-162 lbs. (63-73 kg): 3 teaspoonful (15.0 mL)
• 163-187 lbs. (74-84 kg): 3 1/2 teaspoonful (17.5 mL)
• 188 lbs. (85 kg and over): 4 teaspoonful (20.0 mL)

Off-Label Use and Dosage (Adult)

Guideline-Supported Use

There is limited information regarding Off-Label Guideline-Supported Use of Pyrantel pamoate in adult patients.

Non–Guideline-Supported Use

• Ascariasis

• Dosage: A single dose of 11 milligrams/kilogram

• Infection by Moniliformis

• Dosage: 11 milligrams/kilogram in a single dose, repeated twice, 2 weeks apart

• Infection by Uncinaria

• 11 milligrams/kilogram/day for 3 days

• Trichostrongyliasis

• Dosage: 11 milligrams/kilogram (maximum 1 gram)

Pediatric Indications and Dosage

FDA-Labeled Indications and Dosage (Pediatric)

• Pyrantel Pamoate Suspension is used for the treatment of pinworms in children 2 years to 12 years of age.
• Dosage:

• Less than 25 lbs. (11 kg) or under 2 years old: Do not use unless directed by a physician
• 25-37 lbs. (11-16 kg): 1/2 teaspoonful (2.5 mL)
• 38-62 lbs. (17-28 kg): 1 teaspoonful (5.0 mL)
• 63-87 lbs. (29-39 kg): 1 1/2 teaspoonful (7.5 mL)
• 88-112 lbs. (40-50 kg): 2 teaspoonful (10.0 mL)
• 113-137 lbs. (51-62 kg): 2 1/2 teaspoonful (12.5 mL)
• 138-162 lbs. (63-73 kg): 3 teaspoonful (15.0 mL)
• 163-187 lbs. (74-84 kg): 3 1/2 teaspoonful (17.5 mL)
• 188 lbs. (85 kg and over): 4 teaspoonful (20.0 mL)

Off-Label Use and Dosage (Pediatric)

Guideline-Supported Use

There is limited information regarding Off-Label Guideline-Supported Use of Pyrantel pamoate in pediatric patients.

Non–Guideline-Supported Use

• Ascariasis

• Dosage: A single dose of 11 milligrams/kilogram

• Infection by Moniliformis

• Dosage: 11 milligrams/kilogram in a single dose, repeated twice, 2 weeks apart

• Infection by Uncinaria

• 11 milligrams/kilogram/day for 3 days

• Trichostrongyliasis

• Dosage: 11 milligrams/kilogram (maximum 1 gram)

Contraindications

• Pregnant
• Liver disease

Warnings

• Abdominal cramps, nausea, vomiting, diarhea, headache or dizziness sometimes occur after taking this drug. If any of these conditions persist, consult a physician.
• Keep this and all mediactions out of reach of children.
• In case of accidental overdose, seek professional assistance or contact a Poison Control Center immediately.

Adverse Reactions

Clinical Trials Experience

There is limited information regarding Pyrantel pamoate Clinical Trials Experience in the drug label.

Postmarketing Experience

There is limited information regarding Pyrantel pamoate Postmarketing Experience in the drug label.

Drug Interactions

There is limited information regarding Pyrantel pamoate Drug Interactions in the drug label.

Use in Specific Populations

Pregnancy

Pregnancy Category (FDA): C There is no FDA guidance on usage of Pyrantel pamoate in women who are pregnant.
Pregnancy Category (AUS): B2 There is no Australian Drug Evaluation Committee (ADEC) guidance on usage of Pyrantel pamoate in women who are pregnant.

Labor and Delivery

There is no FDA guidance on use of Pyrantel pamoate during labor and delivery.

Nursing Mothers

There is no FDA guidance on the use of Pyrantel pamoate in women who are nursing.

Pediatric Use

There is no FDA guidance on the use of Pyrantel pamoate in pediatric settings.

Geriatic Use

There is no FDA guidance on the use of Pyrantel pamoate in geriatric settings.

Gender

There is no FDA guidance on the use of Pyrantel pamoate with respect to specific gender populations.

Race

There is no FDA guidance on the use of Pyrantel pamoate with respect to specific racial populations.

Renal Impairment

There is no FDA guidance on the use of Pyrantel pamoate in patients with renal impairment.

Hepatic Impairment

There is no FDA guidance on the use of Pyrantel pamoate in patients with hepatic impairment.

Females of Reproductive Potential and Males

There is no FDA guidance on the use of Pyrantel pamoate in women of reproductive potentials and males.

Immunocompromised Patients

There is no FDA guidance one the use of Pyrantel pamoate in patients who are immunocompromised.

Administration and Monitoring

Administration

Oral

Monitoring

There is limited information regarding Pyrantel pamoate Monitoring in the drug label.

IV Compatibility

There is limited information regarding the compatibility of Pyrantel pamoate and IV administrations.

Overdosage

There is limited information regarding Pyrantel pamoate overdosage. If you suspect drug poisoning or overdose, please contact the National Poison Help hotline (1-800-222-1222) immediately.

Pharmacology

There is limited information regarding Pyrantel pamoate Pharmacology in the drug label.

Mechanism of Action

There is limited information regarding Pyrantel pamoate Mechanism of Action in the drug label.

Structure

There is limited information regarding Pyrantel pamoate Structure in the drug label.

Pharmacodynamics

There is limited information regarding Pyrantel pamoate Pharmacodynamics in the drug label.

Pharmacokinetics

There is limited information regarding Pyrantel pamoate Pharmacokinetics in the drug label.

Nonclinical Toxicology

There is limited information regarding Pyrantel pamoate Nonclinical Toxicology in the drug label.

Clinical Studies

There is limited information regarding Pyrantel pamoate Clinical Studies in the drug label.

How Supplied

Pyrantel pamoate suspension 32 fl. oz. (946 mL)

Storage

Store at 20°–25° C (68°–77° F)

Images

Drug Images

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Package and Label Display Panel

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Patient Counseling Information

There is limited information regarding Pyrantel pamoate Patient Counseling Information in the drug label.

Precautions with Alcohol

Alcohol-Pyrantel pamoate interaction has not been established. Talk to your doctor about the effects of taking alcohol with this medication.

Brand Names

• Ascarel
• Pamix
• Pin-X
• Pinworm

Look-Alike Drug Names

There is limited information regarding Pyrantel pamoate Look-Alike Drug Names in the drug label.

Drug Shortage Status

Price

References

The contents of this FDA label are provided by the National Library of Medicine.

Pyrantel pamoate is used as a deworming agent in the treatment of hookworms (all species) and roundworms (Parascaris equorum, aka ascarids in humans) in domesticated animals such as horses, cattle, sheep, pigs, cats, dogs, and many other species. Some drug companies pair pyrantel pamoate with praziquantel for tapeworms, and sometimes febantel for whipworms in order to provide more complete treatment for intestinal parasites in one dose.

Pyrantel pamoate is also commonly included in monthly administered chewable heartworm tablets for cats and dogs.

Drug Action

(Antiminth, Pin-Rid, Pin-X) (C11H14N2S.C23H16O6) Depolarizes ganglionic block of nicotinic neuromuscular transmission on the cholinergic receptors of the nematode resulting in spastic paralysis of the worm. This has the result of causing the worm to "loose it's grip" on the intestinal wall and be passed out of the system by natural process. Since Pyrantel is poorly absorbed by the hosts intestine, the small dosage of medication used is completely ineffective to the host. Spastic (tetanic) paralyzing agents, in particular pyrantel pamoate, may induce complete intestinal obstruction in a heavy worm load. This obstruction is usually in the form of a worm impaction and happens when a very small, but heavily parasitized animal is treated and tries to pass a large number of dislodged worms at once. Worms usually pass in normal stool or with diarrhea, straining, and occasional vomiting. Dosage is 11 mg/kg not to exceed 1 g as a single dose.