Perme-Cure

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Medically reviewed

Marina Burgos

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 Perme-Cure

Quick Facts

Property Description
Active ingredient Permethrin
Form Topical Cream, Lotion, or Rinse
Pharmacological class Ectoparasiticide
Common use Treatment of lice and mite infestations
Origin Synthetic pyrethroid derivative

What Type of Medicine is Perme-Cure?

Perme-Cure is a topical pharmaceutical preparation whose fundamental purpose is the resolution of infestations caused by external arthropod parasites. It is formally classified as an Ectoparasiticide, a pharmacological class dedicated to eliminating organisms living on the body surface, such as mites and lice. The medicine functions specifically as both a Scabicidal Agent and a Pediculicide. This targeted class, clinically recognized for its reliability across various patient groups, ensures the drug addresses the primary cause of intense skin irritation and discomfort stemming from scabies and pediculosis.

Permethrin: Origin and Composition of the Active Ingredient

The active ingredient in this medication is Permethrin, a powerful compound categorized as a synthetic pyrethroid derivative. This compound is chemically synthesized but designed to mimic the structure and activity of natural pyrethrins found in chrysanthemum flowers. Permethrin is categorized as an essential medicine, reflecting its efficacy and importance for public health. This designation confirms the medicine's necessary role in treating common parasitic conditions, often serving as a preferred first-line treatment where local resistance is not established.

Perme-Cure is formulated as a single-ingredient product, typically utilizing an emulsified cream base or aqueous lotion/rinse vehicle to deliver the active substance directly via topical administration. Its formulation, frequently available in both prescription-only (Rx) and over-the-counter (OTC) variations depending on concentration, is specifically designed for ease of application across large skin surfaces.

What is the General Benefit of Perme-Cure?

The general benefit of Perme-Cure is the targeted clearance of the parasitic infestation. The medicine works by inducing fatal paralysis in the central nervous systems of the offending arthropods like lice and mites. Permethrin exhibits an important ovicidal effect, meaning it acts to kill the eggs (nits) of the parasites as well as the adult organisms. This means the treatment offers a comprehensive solution against the entire life cycle of the parasite, maximizing the probability of complete clearance and aiding in the rapid recovery of the affected skin.

Regulatory References

  1. WHO Essential Medicines List Entry for Permethrin

What side effects are possible with Perme-Cure?

Possible Side Effects and Safety Information

The safety profile of Perme-Cure (Permethrin) is based on official regulatory classifications derived from clinical trials and post-marketing reports, focusing primarily on reactions associated with its topical administration.

Frequency-Classified Adverse Reactions

The most frequently reported effects are generally Common, affecting the Skin and Subcutaneous Tissue. These include a burning or stinging sensation, pruritus (itching), erythema (redness), and dry skin. These local reactions are typically mild and transient, occurring soon after application. The regulatory documentation classifies effects affecting the Nervous System, such as tingling (paraesthesia) and numbness, as Uncommon or Common depending on the specific product formulation.

Adverse Reaction Category Examples of Effects Listed in Regulatory Documents
Common Pruritus, skin burning sensation, dry skin
Uncommon Erythema, numbness, rash
Rare Headache, nausea, vomiting, seizures (convulsions)

Time-Related Safety Patterns

Official labels detail that the skin burning and stinging sensation is generally transient. However, pruritus may persist for up to four weeks after successful treatment; this is noted as a physiological response to the dead parasites and is generally not indicative of treatment failure. The treatment may also temporarily exacerbate existing symptoms of the original infestation, such as swelling and redness.

Population-Specific Safety Considerations

The medicine is contraindicated in individuals with a known hypersensitivity to the active ingredient, synthetic pyrethroids, or pyrethrin. Safety and effectiveness have not been established for use in infants less than two months of age. The product is classified as FDA Pregnancy Category B.

Overdose and Emergency Response

️ Overdose Manifestations and Required Emergency Actions

The official regulatory documents define the overdose profile of Perme-Cure primarily based on the route of overexposure.

Documented Clinical Manifestations

Exposure Type Documented Manifestations
Accidental Ingestion (Systemic) Nausea, vomiting, headache, dizziness, abdominal pain, and potential for convulsion or seizure.
Excessive Topical Use (Local) Exacerbated local effects, including increased irritation, redness (erythema), burning, stinging, and altered sensation (paresthesias).

Accidental ingestion carries a risk of systemic toxicity and is associated with serious outcomes, including a life-threatening aspiration hazard if the product enters the airways.

Mandatory Emergency Response

In the event of accidental ingestion, regulatory authorities mandate that an individual seek immediate medical attention. It is required to call local emergency services (e.g., 911) or a Poison Control center immediately, especially if the product was swallowed or if the individual has collapsed or is not breathing. The label explicitly advises against inducing vomiting.

No specific antidote is known for Permethrin overdose; clinical management focuses on general supportive measures and procedures such as gastric lavage. For children, gastric lavage may be considered if medical consultation occurs within two hours of ingestion.

Therapeutic Uses of Perme-Cure

What Perme-Cure Treats: Main Uses and Benefits

Perme-Cure is applied across therapeutic domains involving ectoparasitic infestations, which are conditions presenting with systemic or localized discomfort caused by tiny insects. This medication is considered relevant for two primary indications: scabies (mite infestation) and all forms of pediculosis (lice infestation).

It is commonly used in the symptomatic management of these conditions, which include head lice, body lice, and pubic lice. The therapeutic goal is to manage the infestation and the potential for recurrence.

The medication is applied across domains where additional symptomatic support is needed to address symptoms related to inflammatory or irritative states. The primary benefit for the patient is the alleviation of intense cutaneous pruritus (severe itching), which is a difficult manifestation to manage. It supports the patient during difficult episodes by easing distress and assists with maintaining functional stability of the affected skin.

This treatment also plays a role in managing the spread of the acute episode among household and close contacts. It is considered relevant for use in diverse groups, including pediatric patients (typically two months of age and older) and **pregnant women.


Quick Fact: Relief for Pruritus
Perme-Cure assists with easing the overall symptom burden linked to severe itching and skin irritation caused by active parasitic colonization.

Regulatory References

  1. NIH MedlinePlus overview of Permethrin

Eligibility and Restrictions for Use

Perme-Cure (Permethrin 5% w/w Cream) eligibility is determined by specific population restrictions, as outlined in regulatory documents.

Contraindications

Do not use Perme-Cure if you have a known hypersensitivity or allergy to the active ingredient permethrin, any synthetic pyrethroid or pyrethrin, or any other ingredient in the product. The product is also contraindicated for infants less than 2 months of age because safety and effectiveness have not been established in this newborn group.

Eligibility and Restricted Use

Perme-Cure is indicated for adults and children 2 months of age and older. Use in children aged 2 months to 23 months requires close medical supervision due to limited clinical experience in this specific age group. Elderly patients (over 65 years) should apply the cream to the face, ears, and scalp in addition to the body.

  • Pregnancy: Use during pregnancy is categorized as Category B (if applicable to the specific formulation) and should only occur if clearly needed after medical consultation.
  • Lactation: It is recommended to discontinue nursing temporarily or withhold the drug while nursing, as it is unknown if permethrin passes into breast milk.
  • Other Conditions: Patients with known allergies to chrysanthemums or other plants of the Compositae family should use the product only after consulting a healthcare professional. Use must be discontinued if a hypersensitivity reaction occurs.

What should I know about interactions with other medicines?

The official regulatory profile for Perme-Cure (Permethrin topical cream) establishes that no known clinically significant systemic interactions exist with other medicinal products. This classification is due to the drug's topical administration route, resulting in minimal systemic absorption (typically less than two percent of the applied dose). Consequently, official labeling does not list any substances that modify Perme-Cure's exposure or require dose adjustments, including interactions related to major metabolic enzymes or drug transporters.


The regulatory profile highlights two key non-systemic constraints. The first is a pharmacodynamic caution concerning topical corticosteroids. These products should be withheld prior to Perme-Cure application as they may reduce the body's immune response, potentially exacerbating the parasitic infestation. The second constraint is a crucial excipient-based product restriction: the non-active ingredients in the cream formulation can damage latex-based contraceptive products, such as condoms and diaphragms, reducing their effectiveness. Therefore, the cream must not be co-used with these latex barriers. No known interactions with food, alcohol, or herbal products are documented.

Mechanism of Action

How Perme-Cure Works


Perme-Cure's mechanism initiates by acting on voltage-sensitive sodium channels embedded in the parasite's nerve cell membranes . The active ingredient functions as a channel modulator, specifically by delaying the inactivation of these channels. This action prevents the channels from closing normally, resulting in a prolonged and excessive influx of sodium ions ( Na^+) into the nerve cell.

The sustained ionic overload disrupts the parasite's neural signal transduction, leading to the continuous, repetitive firing of nerve impulses (hyperexcitability). This molecular event rapidly escalates into a systemic failure, causing uncoordinated movement, tremors, and eventually irreversible paralysis—often referred to as the 'knockdown effect.' This neurotoxic mechanism also applies to the embryonic nervous system inside the nits, resulting in action against the entire parasite life cycle.

The mechanism's action can be constrained by specific biological factors, primarily genetic mutations in the sodium channel structure itself (target site resistance) and the development of metabolic resistance. These limitations reduce the molecule's ability to bind to its target or increase its chemical breakdown before a lethal concentration is reached, which limits the degree of neurotoxicity.

Dosage and Administration Information

Perme-Cure is administered via the topical route only, with the specific use pattern dependent on the concentration of the formulation. The medicine is available as a 5% cream and a 1% lotion or rinse. The 5% cream is administered as a single, comprehensive application to the affected body area. For adults, the cream is applied from the neck down to the soles of the feet, and an application of up to 30 grams may be required. The cream must remain on the skin for 8 to 14 hours before being washed off thoroughly. Application should occur on clean, dry, and cool skin, specifically avoiding immediate use after a hot bath. If the treated hands are washed during the contact time, the cream must be immediately reapplied.

The 1% lotion or rinse is used for the hair and scalp. The application requires saturating the hair and scalp and then leaving the rinse on for 10 minutes before rinsing with water. For both the 5% cream and the 1% rinse, the standard regimen is a single course. However, the repeat of the entire treatment after seven days may be performed if clinical evidence of live infestation persists. The medication is approved for use in individuals 2 months of age and older. For the 5% cream, pediatric patients under two years of age and geriatric patients require extended application to include the hairline, neck, scalp, and forehead. This structured, time-bound regimen defines the standardized application of the ectoparasiticide.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Perme-Cure

Evidence for use in Scabies (Mite Infestation)

Research exploring the use of Perme-Cure for scabies has mainly utilized Randomized Controlled Trials (RCTs) and Systematic Reviews. These studies concentrate on outcomes related to clinical status, which means monitoring the skin for the evaluation of lesion status and parasite load. The research highlights changes measured during the short-term study period, focusing on the initial response within the first one to four weeks.

However, data for certain groups remain insufficient, and findings were mixed in certain regions. The evidence is limited in clarifying the most effective approach where mite resistance is known to be an issue. Follow-up durations were limited in many studies, meaning that the durability of the initial clinical status over periods longer than a few months is not well characterized.


Evidence for use in Pediculosis (Lice Infestation)

For pediculosis (lice infestation), research primarily involves short-term Randomized Controlled Trials and various Comparative Trials. Studies explored short-term symptom changes and examined outcomes related to the overall status of lice and their eggs (nits). Researchers monitored affected individuals over defined time intervals to assess the assessment of active parasite status and the ovicidal activity (the ability to kill the eggs).

Findings help contextualize how patients reported their experience related to skin irritation. The main uncertainty in this area is related to the variability in reported ovicidal activity measured across different formulations and research settings. Another key limitation is the documentation of increasing resistance in lice populations across certain geographic areas, suggesting outcomes may be less certain in those settings.


Long-Term Research and Follow-up Durability

The available research provides context but not individual predictions regarding the long-term outcomes. Research primarily focuses on short-term or intermediate-term effects, with many trials observing responses over defined time intervals of just a few weeks or months. Consequently, the research describes patterns related to initial parasite status assessment, but long-term effects are not fully established regarding the risk of the infestation returning over an extended period.


Evidence in Special Populations

Research has explored the use of Perme-Cure in several special populations, particularly pediatric patients. Research has included studies involving participants as young as two months of age. Limited information is available for certain groups, such as pregnant women. The existing studies provide limited insight into the outcomes for all potential comorbidity-defined groups.

Key Studies & References

  1. Permethrin Cream, 5% (Scabicidal Agent) - US DailyMed/FDA Label
  2. Permethrin - WHO Essential Medicines List (EML) Entry
  3. Escalating Threat of Drug-Resistant Human Scabies: Current Insights and Future Directions - Microorganisms

Frequently Asked Questions (FAQ)

Common questions about Perme-Cure (FAQ)

Q: How quickly can someone generally expect Perme-Cure to start working?

Official product information describes Perme-Cure's mechanism of action as having a rapid effect on the parasite. The drug works by causing paralysis in the parasite's nervous system, which is commonly described as the 'knockdown' effect.

Q: Does Perme-Cure have a long-term effect after stopping treatment?

Research studies exploring Perme-Cure have generally concentrated on short-term outcomes. The available evidence indicates that the durability of the initial response and the long-term risk of the infestation returning are not fully established over extended periods.

Q: Is Perme-Cure a brand name or a generic name?

Perme-Cure is the brand name used for this medication. The active ingredient it contains is permethrin, which is the generic name for the compound listed by health organizations.

Q: How long is a typical course of treatment with Perme-Cure?

The standard regimen for Perme-Cure is defined as a single application, with the required contact time varying by formulation (e.g., 8 to 14 hours for the cream). Regulatory guidance indicates that the treatment may be repeated one time after a full seven days if there is clinical evidence that the live infestation is still present.

Q: Is there any evidence about Perme-Cure's use in the elderly population?

Regulatory documents describe that the recommended application pattern for elderly patients includes extended coverage to areas like the hairline, neck, scalp, and forehead. However, research reports provide limited insight into specific clinical outcomes or evidence themes for this geriatric population.

Q: Is Perme-Cure considered a 'cure' for a condition or a way to manage symptoms?

Official documents describe the medicine's general benefit as the targeted clearance and resolution of the parasitic infestation. While the drug works against the entire life cycle of the parasite, official labeling notes that some symptoms like itching (pruritus) may be a physiological response to the dead parasites and can persist for up to four weeks after successful treatment.

Q: What specific type of safety classification does Perme-Cure have from regulatory bodies?

Perme-Cure is classified as an Ectoparasiticide, a topical pharmaceutical preparation. The classification of the drug's safety profile is supported by its minimal absorption into the bloodstream, which official documents typically note as less than two percent of the dose.

Q: What did the phase 3 trials for Perme-Cure conclude about its primary endpoint?

The main clinical trials, including Phase 3 studies, assessed the drug's effectiveness by focusing on specific clinical endpoints. These included measuring the overall clinical status (such as lesion status and parasite load) for scabies, and the assessment of active parasite status (lice and their eggs, or nits) for pediculosis.

Q: Is the long-term safety profile of Perme-Cure known?

Studies have primarily focused on the drug's short-term and intermediate-term effects. Official documents state that while research describes patterns related to the initial response, long-term safety and the durability of efficacy over extended periods are not fully established.

Q: What official body approved Perme-Cure, and when?

The medicine has been reviewed and listed by major regulatory bodies such as the FDA and EMA. The active ingredient, permethrin, is listed on the World Health Organization’s (WHO) Model List of Essential Medicines.

Q: Is Perme-Cure the same type of medicine as [similar generic drug name]?

Perme-Cure is classified as an Ectoparasiticide, a pharmacological class dedicated to eliminating organisms living on the body surface. Its active ingredient is a synthetic pyrethroid derivative.

Q: Is Perme-Cure a narcotic or a controlled substance?

Regulatory authorities and official product labeling do not classify Perme-Cure as a controlled substance or narcotic. This information is typically found in the official drug label sections addressing potential for abuse and dependence.

Q: What is the main difference between Perme-Cure and older medicines for the same condition?

Perme-Cure's active ingredient is a synthetic pyrethroid derivative, which works by affecting the nervous system of the parasites. Older treatments for these conditions may be based on different chemical classes and mechanisms of action.

Q: Can people with liver issues use Perme-Cure, based on official guidelines?

Because Perme-Cure is administered topically and is minimally absorbed into the bloodstream, regulatory documents generally do not list specific warnings or require dose adjustments for people with pre-existing liver or kidney issues.

Q: Does Perme-Cure have a risk of dependency, as stated in the product information?

Official regulatory documents, which include sections on potential for abuse and dependence, do not list any risk of dependency for Perme-Cure.

Q: Can Perme-Cure affect the results of common laboratory tests?

According to official regulatory labeling, there is no known influence or interference described for Perme-Cure on the results of common laboratory tests.

Q: What does 'contraindication' mean in the context of Perme-Cure?

A contraindication refers to a specific condition or factor that makes the use of the drug officially not recommended or prohibited. For Perme-Cure, examples listed in official documents include a known hypersensitivity to the active ingredient or use in infants under two months of age.

Q: Why might a doctor switch a patient from a different medicine to Perme-Cure?

Official documents highlight that Perme-Cure works by a distinct neurotoxic mechanism that can be constrained by parasite resistance. A healthcare provider might consider switching treatment based on the drug's effectiveness in a specific geographic area where mite or lice resistance to other compounds is a known issue.

Q: Does taking Perme-Cure require any special monitoring or regular blood tests?

Because the medication is minimally absorbed into the body, official regulatory documents do not require special patient monitoring or regular blood tests during or after the single course of treatment.

Q: How long after stopping Perme-Cure does it stay in the body?

Pharmacokinetic studies indicate that only a small amount of the drug is absorbed through the skin. This amount is generally expected to be metabolized and excreted, which is why official documents typically do not specify an elimination half-life for this type of topical medicine.

Q: What types of people were excluded from the main clinical studies for Perme-Cure?

Clinical research for Perme-Cure has generally focused on participants aged two months and older. The studies typically exclude people with known hypersensitivity to the drug. Additionally, certain groups, such as pregnant or breastfeeding people, may have been excluded from the main trials due to limited safety data in those populations.

Q: Is it safe to get vaccinated while taking Perme-Cure?

Official regulatory labeling does not report any known interactions between Perme-Cure and vaccines. This is consistent with the drug's minimal systemic absorption into the bloodstream.

Q: Are there any official reports of unexpected outcomes with Perme-Cure?

Regulatory documents gather and classify adverse reactions, which are officially reported. This list includes both common effects and rare effects, such as seizures or convulsions. However, official documentation does not provide a public summary of all unclassified or 'unexpected' outcomes.

Q: Are there special warnings for people with heart conditions who are considering Perme-Cure?

Official regulatory documents do not list specific warnings or contraindications for people with heart (cardiac) conditions. The drug is administered topically, which results in minimal systemic absorption.

Q: Is there a risk of withdrawal symptoms when stopping Perme-Cure, according to official data?

Regulatory documents, which summarize known safety risks associated with drug discontinuation, do not list any risk of withdrawal symptoms when stopping the use of Perme-Cure.

Q: What are the specific non-active ingredients that can damage latex-based products?

The regulatory warning regarding latex-based contraceptive products is due to specific non-active ingredients, known as excipients, in the cream formulation. These substances are listed in the composition section of the official regulatory documents.

How should Perme-Cure be stored and disposed of?

How to Store and Dispose of Perme-Cure

Storage and disposal requirements for Perme-Cure (Permethrin cream) are strictly defined by regulatory labeling.

Storage Conditions

The medication must be stored at Controlled Room Temperature between 20^circC and 25^circC (68^circF to 77^circF). It must not be stored above 25^circC and must not freeze. The cream should be stored in its original container, which must be kept tightly closed and protected from excess heat and moisture. For safety, the product must be stored out of sight and reach of children.

Disposal Instructions

Unused or expired Perme-Cure must be disposed of in accordance with local requirements. Due to the product being very toxic to aquatic life, release to the environment must be avoided. Household disposal guidelines recommend mixing the unused product with an unappealing substance (like coffee grounds or dirt) and sealing it in a container before placing it in the trash.

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

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