Sting-Kill

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Sting-Kill

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Sting-Kill

Property Description
Active Ingredients Benzocaine (20% USP) and Menthol (1% USP)
Form Solution, Topical Swab, Medicated Pad
Pharmacological Class Topical Anesthetic and Antipruritic Combination
Common Purpose Immediate relief of pain and itching
Type Over-the-counter (OTC) human drug

What Type of Medicine is Sting-Kill?

Sting-Kill is an over-the-counter (OTC) human drug classified as a topical combination medicine intended exclusively for external use. This preparation is categorized as a Topical Anesthetic and Antipruritic Combination, a formulation that is clinically recognized for its effectiveness in addressing two types of acute skin discomfort simultaneously. The product's distinct positioning is as a dedicated maximum strength first-aid application, differentiating it from multi-purpose, lower-concentration creams. Its fundamental purpose is to provide immediate, temporary relief from both pain and itching resulting from minor skin irritations.


Composition and Form: Ingredients and Preparation Type

The identity of Sting-Kill is defined by its dual-action composition featuring two principal active ingredients: Benzocaine (USP 20%) and Menthol (USP 1%). The Benzocaine component is an agent from the amino ester drug class, providing the primary localized numbing effect. Menthol, an antipruritic compound, is integrated to offer a cooling sensation, which helps ease discomfort by counteracting the urge to itch. This medicine is specifically packaged as a portable solution saturated onto sanitary topical swabs or medicated pads, designed for easy and targeted external administration, a key feature setting it apart from gels or creams.


How Does the Dual-Action Formula Generally Benefit the User?

The dual-action formula is engineered to provide swift, on-site comfort. The high concentration of Benzocaine is intended to deliver effective numbing by temporarily desensitizing nerve endings. Concurrently, the Menthol component delivers a distinct cooling physiological action that actively relieves the distracting sensation of pruritus. This combined approach ensures that the user can manage both core symptoms—pain and itching—with one localized treatment, confirming its primary benefit as an immediate, concentrated skin relief agent.

What side effects are possible with Sting-Kill?

Possible Side Effects and Safety Information

The safety profile of this topical combination is determined by the potential for local skin reactions and, less commonly, the risk of a serious systemic adverse reaction associated with its active ingredient, Benzocaine.

Adverse Reactions and Systemic Classification

Adverse reactions documented in official regulatory sources fall primarily into the following categories:

  • Skin and Subcutaneous Tissue Disorders: Localized effects at the application site are the most frequently observed reactions. These include mild irritation, stinging, burning, and the potential for developing allergic contact dermatitis (skin sensitization).
  • Immune System Disorders: Hypersensitivity reactions may occur in rare instances.
  • Blood and Lymphatic System Disorders: The most serious safety concern is the risk of Methemoglobinemia. This condition, where the blood's oxygen-carrying capacity is impaired, is a documented serious adverse reaction linked to Benzocaine-containing products, particularly when used improperly or in excess.

Population-Specific Safety Considerations

The U.S. Food and Drug Administration (FDA) and other health authorities have highlighted specific safety considerations for certain populations due to the risk of Methemoglobinemia:

  • Infants and Children Under 2 Years: Use of Benzocaine products is advised against in this age group.
  • Individuals with Certain Conditions: Patients with existing heart disease or lung conditions may be at greater risk for complications from Methemoglobinemia.

Safety-Related Constraints on Exposure

Regulatory documentation mandates strict constraints to prevent systemic exposure. The preparation is designated for external use only. Applying it to large areas of the body, broken skin, or using it more frequently than intended can increase the risk of systemic absorption and associated serious effects. Local skin reactions, such as mild stinging, are often transient and occur immediately upon application.

Overdose and Emergency Response

Overdose circumstances involving this topical product primarily relate to misuse, accidental ingestion, or excessive application of its active components, Benzocaine and Menthol.

Overdose Manifestations

System Associated Clinical Features (Potential)
Hematologic Methemoglobinemia, a serious condition where oxygen transport in the blood is impaired. This may result in cyanosis (pale, gray, or blue-colored skin, lips, and nail beds).
Neurological Confusion, headache, lightheadedness, dizziness, and fatigue. In severe cases, seizures, coma, or respiratory failure (breathing stops) are possible.
Cardiovascular Rapid or irregular heart rate (tachycardia) and fast breathing.
Gastrointestinal Nausea and vomiting, typically following accidental ingestion.

When Immediate Medical Help is Required

Urgent medical attention is necessary if any of the following occur after using a Benzocaine-containing product:

  • Pale, gray, or blue discoloration of the skin, lips, or nail beds.
  • Shortness of breath or difficulty breathing.
  • Unusual tiredness, fatigue, or confusion.
  • Rapid heart rate.
  • Accidental ingestion of the product.

Over-the-counter labels strictly state to keep this product out of reach of children and to get medical help or contact a Poison Control Center right away if swallowed. The risk of severe blood conditions is generally higher for individuals with breathing problems, heart disease, or certain inherited enzyme deficiencies, or when the product is applied over large or broken skin areas.

Therapeutic Uses of Sting-Kill

The product is applied in addressing symptomatic relief for acute skin discomfort, and is relevant for managing symptoms that interfere with daily comfort, such as localized pain and itching. The product is commonly used across conditions presenting with acute episodes of discomfort.

The medication is relevant for managing symptom clusters that create noticeable physiological strain, and commonly used when short-term symptomatic assistance is needed in contexts involving irritations such as bee stings, mosquito bites, minor cuts, scrapes, and other minor exposures. This supportive relief helps ease the overall symptom burden of sharp pain and persistent pruritus.

The primary benefit is providing supportive relief that may assist with maintaining functional stability and may help patients cope more steadily with symptom fluctuations associated with epidermal irritation.


Quick Fact: Relief for Dual Discomfort The medication is relevant for managing the acute, temporary pain and subsequent itching (pruritus) associated with minor skin trauma, supporting comfort during episodes of heightened symptoms.

Regulatory References

  1. DailyMed Drug Label (NIH/NLM)

Eligibility and Restrictions for Use

The eligibility for using Sting-Kill is strictly defined by regulatory guidelines, primarily based on age, application site, and pre-existing medical conditions.


Eligibility and Contraindications

Classification Population Rule (Official Labeling)
Use Allowed Adults and children 2 years of age and older.
Contraindicated Children under 2 years of age.
Hypersensitivity Individuals with a known allergy to benzocaine or similar local anesthetics.

Restrictions and Special Considerations

Official labeling imposes specific restrictions based on user health status and the application site:

  • Pre-existing Conditions: Individuals with a history of heart disease or breathing problems (such as asthma or emphysema) are noted as being at greater risk for complications related to the active ingredient, necessitating caution.
  • Application Site: The product must not be used on compromised skin, including deep or puncture wounds, animal bites, infections, or serious burns.
  • Extent of Use: Do not apply over large areas of the body.
  • Pregnancy/Lactation: Individuals who are pregnant or breastfeeding are instructed to consult a doctor before use.

What should I know about interactions with other medicines?

Sting-Kill contains the active ingredients benzocaine (a local anesthetic) and menthol (an antipruritic). Due to the low systemic absorption of these topical ingredients when used as directed, the risk of serious drug-drug interactions is generally considered low. However, it is essential to be aware of potential interactions, particularly those that may increase the risk of rare, but serious, side effects like methemoglobinemia, a blood disorder.

Potential Drug Interactions

Interaction Significance Medication/Product Class Clinical Consideration
Major (Avoid/Consult Physician) Nitrates and Nitrites (e.g., nitroglycerin, isosorbide dinitrate) Concurrent use may increase the risk of developing methemoglobinemia due to the benzocaine component.
Major (Avoid/Consult Physician) Other Local Anesthetics (especially those known to induce methemoglobinemia, such as prilocaine) Combining topical anesthetics can heighten the risk of methemoglobinemia.
Moderate (Caution/Monitor) Dapsone May increase the risk of methemoglobinemia. Use together with caution and under medical advice.
Topical Agents Other topical products on the same area Avoid using other topical medications, cosmetics, or skin care products on the treated area unless specifically advised by a healthcare professional.

Important Considerations

Always inform your healthcare provider about all prescription medications, over-the-counter drugs, vitamins, and herbal products you are currently using before applying Sting-Kill. If you notice symptoms of methemoglobinemia, such as bluish-colored lips, skin, or nail beds, or difficulty breathing, seek immediate medical attention.

Mechanism of Action

Peripheral Sensory Nerve Blockade

The local anesthetic component, Benzocaine, exerts its effect by engaging in the domain of peripheral sensory nerve conduction blockade. It acts directly upon voltage-gated sodium channels (VGSC) in the nerve cell membrane, stabilizing them in an inactive state to prevent the necessary influx of sodium ions (Na^+). This specific molecular action halts the propagation of the electrical impulse, leading to the physiological consequence of reversible interruption of peripheral sensory nerve conduction at the application site.

️ Thermal Receptor Pathway Modulation

The second mechanistic domain involves Thermal Receptor Pathway Modulation through the active ingredient Menthol. This compound functions as an agonist for the Transient Receptor Potential Melastatin 8 (TRPM8) channel, which is responsible for sensing cold. By activating this channel, Menthol generates a strong, competing 'cooling' signal that travels along the sensory nerves, which subsequently overrides and attenuates the central transmission of the signaling associated with pruritus.

Dual Pathway Intervention Synergy

The combination product engages a synergistic mechanism by simultaneously targeting the distinct neurophysiological pathways for nociceptive and pruritic signaling. This dual intervention provides a comprehensive localized physiological response by addressing the two major sensory inputs through dedicated and complementary molecular targets, contributing to a coordinated adjustment of peripheral sensory input at the site of application.

Dosage and Administration Information

How to Use Sting-Kill: Official Administration Guidelines

This section describes the standard administration of the Benzocaine 20%/Menthol 1% combination agent.


Administration Protocol

The product is designated solely for topical administration, intended for external use only. The standard protocol involves the application of the solution, which is saturated onto a single-use disposable swab or medicated pad. Dosing is based on localized need, with the primary constraint being the frequency of use, which must not exceed 3 to 4 times a day.

Procedural and Population Requirements

Specific steps are involved for proper use. Before application, the applicator must be activated to saturate the swab tip. For treating bee stings, the stinger must be removed from the site of irritation before the product is applied, and application should occur immediately following the incident.

Use is restricted by age, authorized for adults and children 2 years of age and older. Use in children under 2 years of age requires the advice or supervision of a doctor. Following administration, the used applicator must be discarded as it is designed for a single application.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Sting-Kill


The Regulatory Foundation: Studies Supporting OTC Status

Sting-Kill is an Over-the-Counter (OTC) medicine. Its active ingredients—Benzocaine (20%) and Menthol (1%)—have been evaluated by the United States Food and Drug Administration (FDA) to be Generally Recognized as Safe and Effective (GRASE), which is the regulatory classification for these ingredients. This regulatory status is typically based on a review of existing data rather than a single, large-scale clinical trial for the final product formulation. Instead, it relies on extensive Regulatory Panel Reviews of historical data, including years of research and established public literature on the ingredients. This process involved the study of observed patterns related to these agents in first-aid contexts. This regulatory evidence base, documented in the OTC Monograph, is the primary structure supporting the ingredient's classification as an external analgesic and antipruritic.


Studies on Symptomatic Relief for Minor Skin Irritations

Research explored outcomes related to localized pain and itching associated with acute or disruptive episodes, such as those that can follow insect bites or minor scrapes. These studies, which include a review of trials assessing symptomatic response, were primarily applied in research contexts involving fluctuating or unstable symptoms that occur from minor skin trauma. Research examined patient-reported outcomes describing perceived discomfort related to localized pain and itching. The evidence describes symptom patterns, particularly concerning the temporary sensory changes that are studied shortly after application.

Outcomes Examined in Relief Studies

Studies explored the subjective intensity of both pain and itching using patient-reported outcomes. Research examined short-term symptom changes, with a focus on determining the time it takes for a localized sensory change to be reported. Furthermore, studies tracked the duration of the observed effect to understand how symptoms evolved over defined, short time intervals following application. These findings help contextualize how patients reported their experience when using localized topical anesthetics and cooling agents.


Evidence in Specific Patient Groups (Populations Studied)

The evidence supporting the regulatory status of the ingredients was studied for use in the general patient population who experience minor skin irritations. The research base includes data that were reviewed as part of the classification process for topical use within this broad age group. However, results apply only to the populations studied and do not offer comprehensive data specific to certain subgroups. For instance, data for complex, comorbidity-defined groups remain insufficient. The populations studied and included in the regulatory assessment are limited to individuals aged two years and older.


Long-Term Evidence and Duration of Follow-up

The research explores short-term symptom changes related to acute episodes. Consequently, follow-up durations were limited, typically focusing on the immediate effects and relief patterns observed over the first few days of use. There is limited information for long-term outcomes or data describing effects related to use over extended timeframes. Studies were not designed to monitor physiological strain or symptom patterns beyond the temporary phase associated with minor trauma, and therefore, long-term effects are not fully established.


What Remains Unclear: Research Gaps and Uncertainty

The primary limitation is that the research structure is based on a broad historical record and not necessarily on large-scale Randomized Controlled Trials (RCTs) specifically designed to test the exact 20% Benzocaine and 1% Menthol combination against a placebo or other active treatments for insect bites. Comparative evidence is lacking. The evidence quality varies across studies, and findings primarily describe group patterns, not personal outcomes. Research does not determine whether an individual will respond similarly, and certainty remains low regarding outcomes that extend beyond the immediate, acute phase of skin irritation.

Frequently Asked Questions (FAQ)

Common questions about Sting-Kill (FAQ)


Q: Is Sting-Kill a cream, a spray, or something else?

According to the official product information, Sting-Kill is an over-the-counter medication labeled as a solution that is saturated onto a topical swab or a medicated pad for single external application. The official label does not describe cream or spray forms for this specific product.


Q: Does Sting-Kill actually neutralize the venom?

Regulatory documents indicate that the purpose of Sting-Kill is to provide temporary relief from the pain and itching associated with stings and bites. Its active ingredients function as a topical anesthetic and an antipruritic (anti-itch agent). The product is not labeled or indicated to neutralize or remove venom from the sting site.


Q: Does Sting-Kill help with the swelling or just the pain?

Official labeling for Sting-Kill states that its intended use is for the temporary relief of pain and itching. The product is not specifically indicated for the treatment or reduction of swelling (edema).


Q: What happens if you accidentally swallow Sting-Kill?

This substance is designated for external use only. The label includes a warning stating that if the product is swallowed, one should immediately seek medical help or contact a Poison Control Center.


Q: Are there any common Sting-Kill side effects people report online?

Based on safety information, potential localized reactions at the application site include temporary stinging, burning, redness, and general skin irritation. Additionally, official safety information documents the potential for rare, but serious, effects like methemoglobinemia, especially if the product is used improperly or in excess.


Q: Is it normal for the area to feel tingly after using Sting-Kill?

The drug's safety profile includes mild skin reactions such as temporary stinging or burning at the site of application. If the sensation is severe, persistent, or accompanied by other signs of irritation, regulatory guidelines suggest stopping use.


Q: Why is Sting-Kill sold as both a swab and a cream?

Official drug labels for the maximum strength product describe the form as a solution saturated onto topical swabs or medicated pads. These official documents do not mention a cream formulation for this specific product, indicating the primary available forms are the single-use applicators.


Q: Can I put a bandage over Sting-Kill after applying it?

General topical warnings caution against covering the treated area with a tight bandage or plastic wrap without consulting a healthcare professional, as this may increase the risk of systemic absorption of the ingredients.


Q: Does Sting-Kill help draw out a stinger if it is still embedded?

The official directions for using Sting-Kill state that for bee stings, the stinger must be removed before the product is applied. The product is intended to treat the pain and itching after the stinger has been removed, not to assist in the removal process.


Q: Can you use Sting-Kill on mosquito bites?

Yes, the product is officially indicated for the temporary relief of pain and itching from mosquito bites. It is also labeled for use on other insect bites, bee stings, and minor skin irritations.


Q: Can Sting-Kill be used on burns?

Official product restrictions state that the product must not be used on serious burns or deep puncture wounds. The label restricts use on serious burns or broken skin, which includes many types of open wounds caused by burns.


Q: Are there different strengths of Sting-Kill available?

The official drug label defines this product as a Maximum Strength formula. It contains the active ingredients Benzocaine 20% and Menthol 1%. The available official regulatory labels do not describe other strengths for this specific formulation.


Q: Can people with sensitive skin use Sting-Kill?

The product is only contraindicated for individuals who have a known allergy to Benzocaine. However, regulatory documents indicate that the product may cause mild, temporary irritation, stinging, or burning, and users with sensitive skin may experience these localized effects.


Q: What are common mistakes people make when applying Sting-Kill?

Warnings on the label highlight several misuse scenarios, including applying it more frequently than the recommended maximum, using it on large areas of the body, or using it on children under two years of age. For bee stings, a common mistake is not removing the stinger before applying the product.


Q: Does Sting-Kill stop the itching associated with a bite?

Sting-Kill contains Menthol, which is classified as an antipruritic (anti-itch agent). The official purpose of the product is to temporarily relieve the itching associated with insect bites and minor skin irritations.


Q: Is Sting-Kill safe for older adults or people on multiple medications?

The label contains a warning that individuals with certain pre-existing conditions, such as heart disease or breathing problems, should consult a healthcare professional before use. These conditions can increase the risk of complications from the active ingredient Benzocaine.


Q: Will Sting-Kill prevent a delayed allergic reaction?

The product is for local symptom relief (pain and itching) only. The official warnings state that if signs of a serious allergic reaction develop, one must get medical help right away, confirming the product does not prevent systemic reactions to venom.


Q: Do people use Sting-Kill for spider bites?

The product is officially indicated for insect bites and minor skin irritations. While not specifically labeled for spider bites, its function is for pain and itching from general, minor skin trauma.


Q: Why does Sting-Kill sometimes cause a slight stinging sensation itself?

Mild stinging is a listed adverse reaction on the drug label. This temporary sensation may be related either to the therapeutic action of the active ingredients (Benzocaine and Menthol) or to the presence of an inactive ingredient like Isopropyl Alcohol in the solution.


Q: Can I use Sting-Kill on my face or near my eyes?

The official warnings explicitly state that you must avoid contact with the eyes, mouth, and mucous membranes. The product should be used for external application only, away from sensitive areas of the face.


Q: Does heat or cold affect the storage of Sting-Kill?

The official product label instructs that the product must be kept away from fire or flame. This warning is due to the presence of alcohol in the solution, which makes the product flammable.


Q: Can Sting-Kill be used on irritated skin not caused by a bite?

Yes, the product is indicated for the temporary relief of pain and itching not only from stings and bites, but also from minor skin irritations in general.

How should Sting-Kill be stored and disposed of?

How to Store and Dispose of Sting-Kill?

The storage and disposal of Sting-Kill (Benzocaine and Menthol Solution Swabs) must comply strictly with official regulatory labeling.

Storage Requirements

Sting-Kill must be stored out of reach of children. The product should be kept away from fire or flame because the solution is flammable due to its alcohol content. While no specific temperature is stated in the primary label, similar formulations require storage at room temperature.

Before use, the packaging must be inspected. The label instructs users not to use the product if the internal glass casing is broken or if the swab is missing.

Disposal

Sting-Kill is designed for single-use only. After the single application, the regulatory instruction is to dispose of the swab or pad after use. No special pharmaceutical waste handling procedures are specified for discarding the used applicator.

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

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