Adams

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Adams

Method of action: Anthelmintic

Treatment option: Enterobiasis

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Adams

What is Adams? Defining the Medicine

Property Description
Active Ingredient Pyrantel (commonly Pamoate or Embonate salt)
Form Oral Suspension and Tablets
Pharmacological Class Anthelmintic Agent (Antinematodal)
Common Use Elimination of intestinal parasitic worms
Origin Synthetic
Status/Positioning Over-the-counter (OTC) status in many regions

Classification and Essential Identity

Adams is the trade name for a medication whose active ingredient is Pyrantel, which is an Anthelmintic Agent. Specifically, Pyrantel is a synthetic Antinematodal Agent, meaning it is designed to target and eliminate nematodes, such as roundworms and hookworms, which are common causes of intestinal parasitic infections. Its non-prescription status in many countries, often focusing on single-dose convenience, is a key differentiating factor that positions Adams as an accessible medicine for family-wide management of parasitic concerns. Pyrantel is included on lists of essential medicines, confirming its significance in basic global healthcare.


Composition and General Mechanism

The active component, Pyrantel, is formulated primarily as the salt Pyrantel Pamoate or Pyrantel Embonate, and it is a synthetic compound. The Pamoate salt is notable for its minimal gastrointestinal absorption, a unique chemical property that ensures the component remains highly concentrated in the intestines, which is the exact site of the infection. Adams is a single-ingredient product, typically offered as an oral suspension—a preferred form for easier administration—or as tablets.

The medication's general purpose is to rapidly clear the body of intestinal parasitic worms. It achieves this by acting as a depolarizing neuromuscular blocker, which induces spastic paralysis in susceptible parasites. This expulsion mechanism against nematodes allows the immobilized worms to be expelled by the body’s normal intestinal movement.

Regulatory References

  1. WHO Essential Medicines List
  2. Pyrantel Pamoate (DailyMed)

What side effects are possible with Adams?

Possible Side Effects and Safety Information

The safety profile for Adams (Pyrantel Pamoate) is primarily based on official governmental and regulatory labeling. Adverse reactions are generally non-serious and are often described in regulatory documents as less common or as effects that 'sometimes occur,' rather than being assigned standard frequency classifications.

Documented Adverse Reactions

The most commonly listed adverse reactions fall into the following system-organ classes:

System-Organ Class Examples of Documented Effects
Gastrointestinal Disorders Abdominal cramps, nausea, vomiting, diarrhea, tenesmus
Nervous System Disorders Headache, dizziness, drowsiness, insomnia, irritability
Hepatobiliary Disorders Transient increases in liver enzymes values
Skin Disorders Rash

Serious Adverse Reactions and Key Constraints

Official regulatory sources do not typically classify specific events as serious adverse reactions for this medicine. However, specific high-level restrictions are documented in labeling:

  • Contraindications: Adams is generally contraindicated for use in individuals with known hypersensitivity to Pyrantel Pamoate or in cases of intestinal obstruction.
  • Population Cautions: Use requires medical direction and supervision for certain groups. This includes children under 2 years of age or weighing less than 25 pounds, pregnant individuals (as the FDA classification is Pregnancy Category C), and patients with known liver disease or impaired hepatic function.

Caution is also advised in official documents regarding the concomitant use of Pyrantel Pamoate and piperazine due to a potential antagonism of effects. No specific statements are commonly documented linking adverse reaction frequency to the duration of exposure.

Overdose and Emergency Response

An overdose of any substance, including Adams, is a medical emergency requiring immediate attention. Official regulatory guidance mandates that product labeling clearly define overdose risks, symptoms, and emergency procedures to ensure rapid clinical response.

Overdose Presentations and Risk Factors

Symptoms of an overdose may include profound central nervous system depression, marked confusion, unresponsiveness, or loss of consciousness. Physiological complications that can arise, depending on the substance's class, include organ toxicity, respiratory failure (slowed or stopped breathing), and severe cardiovascular events. These effects are often dose-dependent, with specific dose amounts being classified as life-threatening in regulatory documents.

Population-specific risks, such as those concerning the pediatric population, must be highlighted, especially if the ingestion of even one dose unit could potentially cause fatal poisoning.

When to Seek Immediate Medical Help

Always call for emergency medical services immediately if an overdose is suspected or has occurred. This is critical for all scenarios involving an exposure beyond prescribed or intended use, including accidental or intentional intake, or cases of misuse. A suspected overdose is characterized by signs of slowed or difficult breathing, unresponsiveness to voice or touch, limp body, and skin discoloration (e.g., pale, blue, or clammy).

Emergency treatment procedures must be initiated promptly, often involving supportive care, measures for vital function support, and the administration of a specific antidote or reversal agent if one is available and indicated for the substance.

Overdose Severity Classification

Regulatory agencies classify overdose severity based on the resulting acute symptoms, complications (like organ damage), and the potential for a life-threatening outcome, ensuring that clinicians have clear direction for management and treatment.

Therapeutic Uses of Adams

What Adams Treats: Main Uses and Benefits

Adams is commonly used in clinical settings that involve acute or disruptive symptom patterns, primarily as a targeted anthelmintic agent. This medicine is a therapeutic approach for infections caused by susceptible intestinal nematodes, including Pinworm (Enterobiasis), Roundworm (Ascariasis), and specific Hookworm infections. The primary benefit is the clearance of the infection source, which supports the management of the parasitic burden.

The medicine is commonly used to help manage symptom clusters that may become intense or disruptive, such as the persistent nocturnal perianal itching and subsequent sleep disruption typical of pinworm. As part of its therapeutic application in infection management, it helps to maintain a sense of stability when symptoms are more noticeable, contributing to improved comfort during periods of heightened symptoms. It is generally applied in scenarios where additional management of discomfort is required, particularly for family-wide management of pinworm.

It may also assist with managing associated gastrointestinal discomfort, like abdominal cramping, and supports general well-being during symptomatic phases where patients experience noticeable physiological strain. It assists with maintaining functional stability for the individual and the household, serving as essential supportive care against recurrent or episodic manifestations.


Quick Fact: Addresses Symptoms Related to Perianal Itching and Sleep Disruption

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

This section outlines the official eligibility and non-eligibility requirements for Adams (Pyrantel Pamoate) as documented in regulatory labeling from government health authorities.

Eligibility scope Official Regulatory Statement
Populations allowed Adults and children 2 years of age and older are approved for use. Treatment of the entire household may be recommended when one member is infected.
Populations contraindicated Use is prohibited for individuals with a known hypersensitivity to pyrantel or those with a confirmed intestinal obstruction.
Age-related restrictions Children under 2 years of age or weighing less than 25 pounds must not use the product unless directed by a doctor. Safety has not been established for self-medication in this group.
Conditional use only Individuals with liver disease and those who are pregnant must not take this medicine unless under the direct guidance of a doctor. It is classified as Pregnancy Category C.

Regulatory documentation also advises that patients with pre-existing conditions like anemia or malnutrition should use the medicine with caution. For breastfeeding individuals, a doctor must be consulted prior to use, as safety has not been definitively established.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define the interaction profile of Adams (Pyrantel) primarily through specific drug-drug conflicts and administration restrictions.

Documented Pharmacological Interactions

Interacting Product Official Interaction Pattern Regulatory Classification
Piperazine (Anthelmintic) Co-administration results in pharmacodynamic antagonism, which may decrease the therapeutic effect of both medicines. Use Restricted/Contraindicated
Theophylline Co-administration is documented to increase the plasma concentration of Theophylline. Clinically Significant Exposure Modification

Administration and Substance Restrictions

Regulatory labeling specifies constraints related to administration practices. The product can be taken with or without meals, milk, or fruit juice, as formally stated in the FDA monograph, indicating no significant food-based interaction. The use of a laxative is formally documented as unnecessary prior to, during, or after administration, representing a procedural restriction against co-administration.

Use of Adams is formally contraindicated in patients with documented hepatic disease or intestinal obstruction as stated in official product information. This condition-specific restriction is noted in the interaction and warnings section of regulatory summaries, defining limitations for use in specific populations.

Mechanism of Action

The mechanism of Pyrantel (Adams) is characterized by highly focused interference with the parasitic nematode's neuromuscular function, resulting in immobilization. The action centers on selective, targeted disruption of the worm's signaling system.

Pyrantel acts as a selective agonist at specific nicotinic acetylcholine receptors (nAChRs) located on the muscle cells of susceptible worms. This interaction initiates a signaling cascade that overrides the parasite's normal neuromuscular function. The binding of Pyrantel to the nAChR, which acts as a ligand-gated ion channel, drives a persistent, uncontrolled influx of positive ions into the muscle fiber, engaging mechanisms that regulate crucial muscle tone and locomotion.

The sustained receptor agonism leads to a state of continuous, uncontrolled electrical excitation known as depolarizing blockade. This mechanistic cascade immediately results in the worm's musculature locking up in a rigid, fixed state known as spastic paralysis. This physiological consequence removes the worm's ability to maintain its position or resist the movement of the gut.

The mechanism's activity is concentrated solely within the gastrointestinal tract due to the drug's limited systemic absorption. This physiological limitation defines the drug's scope of action, meaning the mechanism is sufficient to cause expulsion of worms only within the gut but is rendered ineffective against migrating larval stages or parasites located outside the intestine.

Dosage and Administration Information

How to Use Adams

Adams (Pyrantel) is administered exclusively through the oral route as an oral suspension or as tablets/chewable tablets. The guidelines for use emphasize adherence to a precise dosing formula and schedule, which is designed to concentrate the medicine at the site of infection within the intestines.

Dosing and Administration

Dosing is calculated based on body weight, using the equivalent amount of Pyrantel base. The total dosage for any single administration must not exceed 1 gram (1000 mg Pyrantel base).

Instruction Category Guideline
Standard Single Dose 11 mg/kg body weight (Pyrantel base)
Timing & Food Can be taken with or without meals and at any time of day.
Preparation Oral suspension must be shaken well before use. Doses must be measured using a specialized measuring device.
Pinworm Schedule Administer a single dose, followed by a second, identical dose 2 weeks later to prevent reinfection.
Family Treatment Simultaneous treatment of all immediate family members is advised for pinworm infection.

Self-treatment with Adams is not recommended for children under 2 years of age or those weighing less than 25 lbs (11 kg). Additionally, patients with known liver impairment should consult a healthcare provider for dosage guidance.

Recent Clinical Evidence

Recent Clinical Evidence

Dronedarone, sold under the brand name Multaq, is an antiarrhythmic agent approved for the maintenance of normal sinus rhythm in individuals with a history of paroxysmal or persistent atrial fibrillation (AFib) or atrial flutter. The drug is chemically similar to amiodarone, but it lacks the iodine molecule.


Efficacy and Study Findings

Clinical trials examining patients with non-permanent AFib reported a statistical difference in the rate of the composite endpoint of cardiovascular hospitalization or all-cause death, compared to placebo. This difference was observed over the duration of the trial period in the population studied. Data suggested that the drug could play a role in managing rhythm control in patients whose AFib is not continuous.


Safety Limitations and Contraindications

Subsequent clinical investigation involving patients with permanent AFib or severe, recent heart failure documented an elevated risk of serious cardiovascular events. One major study observed a doubling of the mortality rate in the permanent AFib group compared to placebo, resulting in specific limitations for use.

The collected evidence confirms the necessity of identifying patient populations in which the potential benefits of the drug, as demonstrated in clinical research, outweigh the potential risks. The drug's use is strictly limited by regulatory bodies based on these research outcomes.

Key Studies & References

  1. Dronedarone in severe congestive heart failure: ANDROMEDA study

Frequently Asked Questions (FAQ)

Common questions about Adams (FAQ)

Q: Is it typical for a dose of Adams to be adjusted over time?

Official use is described as a single treatment, often followed by one repeat dose after two weeks. Official guidelines indicate that treatment is not typically repeated or adjusted beyond the standard schedule described, except under the guidance of a health care provider.

Q: Does Adams affect birth control pills?

Official information describes specific drug conflicts with piperazine and theophylline. Interactions with other drug classes, including oral contraceptives, are not generally documented in the official product labeling.

Q: Is Adams the same kind of medicine as other treatments for this condition?

Adams is classified as an Anthelmintic Agent, which is a type of medicine used to treat parasitic worms. It works by acting as a depolarizing neuromuscular blocker, which is a specific mechanism that differs from some other treatments available for intestinal worms.

Q: Are there different strengths or forms of Adams available?

Yes, official product information confirms that Adams (Pyrantel Pamoate) is available in several forms, including an oral suspension and tablets. These forms may also come in various strengths, which are measured based on the equivalent amount of the Pyrantel base.

Q: How quickly do people generally expect to feel effects from Adams?

The medicine's purpose is to cause paralysis of the worms in the gut for expulsion. Pharmacokinetic data indicates that peak levels in the body's blood system occur within one to three hours after taking the medicine, though its action is concentrated locally in the intestine.

Q: Is Adams considered a long-term treatment option?

Official instructions describe treatment as a single administration, often with one repeat dose two weeks later. Regulatory instructions do not typically include repeated or long-term use, outside of the standard two-dose schedule.

Q: Can Adams cause changes in weight?

Regulatory labeling documents common gastrointestinal side effects such as nausea, vomiting, abdominal cramps, and anorexia (a loss of appetite). Official safety information documents these effects but does not specifically list changes in body weight as a documented adverse reaction.

Q: How long does Adams usually stay in the system after the last use?

The drug is poorly absorbed by the body. Pharmacokinetic data, which describes how the body handles the medicine, reports an average half-life (t1/2) of the drug in plasma in the range of approximately 1.5 to 2.4 hours in some published information.

Q: What does the FDA or EMA say about the safety profile of Adams?

The drug is noted for its inclusion on the World Health Organization's Model List of Essential Medicines. Its safety profile is characterized by minimal systemic absorption and a profile of generally non-serious adverse events, according to official regulatory summaries.

Q: Is Adams known to interact with alcohol?

Some professional references advise caution with alcohol use, citing that common nervous system side effects of Adams may include dizziness and drowsiness. This is based on the official side effect profile.

Q: What is the purpose of the boxed warning, if Adams has one?

Official labeling summaries from US regulatory sources explicitly state that Adams (Pyrantel Pamoate) does not currently have a Boxed Warning (also known as a Black Box Warning) present in its product information.

Q: Is Adams suitable for use by children or adolescents?

Regulatory guidelines state that the product is approved for children 2 years of age and older. Safety for self-medication has not been established for children under 2 years of age or those weighing less than 25 pounds, and use in this population is guided by a health professional.

Q: Is Adams a controlled substance?

Adams (Pyrantel Pamoate) is widely available over-the-counter (OTC) in many regions. Its product classification and description do not include any scheduling that would typically designate it as a controlled substance under regulatory requirements.

Q: What are the limitations or restrictions on using Adams?

Official restrictions on use include a known hypersensitivity to the drug and confirmed intestinal obstruction. Official limitations also state that use by individuals with liver disease or who are pregnant or breastfeeding is restricted to guidance from a health care provider.

Q: Has Adams been studied in pregnant or breastfeeding women?

Official labeling places Adams in Pregnancy Category C. This classification means animal studies suggest a risk to the fetus, but there are no adequate controlled studies in humans. Safety during breastfeeding is officially designated as undetermined.

Q: Are there any lab tests required before starting Adams?

Official guidance for treating the primary infection for which Adams is used does not typically mandate specific laboratory tests before administration for the general patient population.

Q: Is it normal to feel no difference immediately after starting Adams?

The drug's primary action is the paralysis and expulsion of worms, an effect that may not be immediately noticeable to the patient. Conversely, common side effects such as nausea or headache are often noted as potentially occurring shortly after taking the dose.

Q: Does Adams carry a risk of dependence or withdrawal symptoms?

Adams is an Anthelmintic Agent acting as a depolarizing neuromuscular blocker. Regulatory literature and the official product label for this medicine do not generally list a risk of dependence or withdrawal symptoms.

Q: What is the half-life of Adams?

The average half-life (t1/2), which is the time it takes for half of the drug to be eliminated from the bloodstream, is described in some published pharmacokinetic data as being in the range of approximately 1.5 to 2.4 hours.

How should Adams be stored and disposed of?

The storage and disposal of Adams (Pyrantel Pamoate/Embonate) must strictly follow the conditions specified in the official regulatory labeling to maintain product stability and ensure safety.

Storage Requirement Official Condition
Temperature Store at controlled room temperature, generally 15 C to 30 C (59 F to 86 F). DO NOT FREEZE the product.
Container & Protection Keep in the original container, tightly closed, and protect from excess heat, moisture, and direct light.
Child Safety Keep out of the sight and reach of children and pets.
Disposal Discard unused or expired medicine promptly after the expiration date. Disposal should utilize drug take-back programs or, if unavailable, follow the FDA household trash method: mix the medicine with an undesirable substance (e.g., used coffee grounds) and seal it before discarding. Always scratch out personal information from the label.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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