Anaesthesulf

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Anaesthesulf

Method of action: Local Anesthetic, Venosclerosis

Treatment option:

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 Anaesthesulf

Quick Facts

Property Description
Active ingredient Lauromacrogol 400 (Polidocanol)
Form Aqueous Solution (Injectable or Topical)
Pharmacological class Sclerosing Agent, Local Anesthetic
Common purpose Tissue modification and Local Analgesia
Origin Synthetic Compound

What is Anaesthesulf and Its Pharmacological Identity?

Anaesthesulf is a medicinal product recognized for its active constituent, Lauromacrogol 400, which is the International Nonproprietary Name (INN) for Polidocanol. It is classified pharmacologically as a dual-action agent, serving primarily as a specialized sclerosing agent and secondarily as a local anesthetic. This designation reflects the substance’s capacity to perform two distinct physiological actions upon contact with biological tissue.

Lauromacrogol 400 is assigned the Anatomical Therapeutic Chemical (ATC) classification of C05BB02, identifying it as a sclerosing agent for local injection. Clinical experience has established Polidocanol as a standard pharmaceutical agent in phlebology procedures where targeted, localized tissue modification is required. This substance is unique in that it offers both the necessary physical-chemical effect for tissue alteration and immediate local numbing.

Composition, Form, and Origin of the Preparation

The preparation features Lauromacrogol 400 as a single-active-ingredient product, which is a synthetic compound known chemically as a poly(ethylene glycol) dodecyl ether. The medication is consistently manufactured as an aqueous solution, which is essential for its localized actions. This specific fluid formulation allows it to be administered in specialized dosage forms such as an injectable solution or a topical preparation, depending on the therapeutic goal and intended route of administration.

The synthetic origin of the compound ensures strict adherence to pharmaceutical standards. Scientific literature describes the molecule’s ability to act as an amphiphilic surface-active substance, which is the basis of its physical-chemical interaction with cell membranes. This physical property enables the substance to achieve its therapeutic effect at low concentrations, making it a well-tolerated option for precise, localized applications.

General Purpose of Lauromacrogol 400

The general functional benefit of Lauromacrogol 400 is rooted in its capacity to induce membrane stabilization—a process that physically alters the structural integrity of cell membranes. This physiological action allows the medication to facilitate both targeted tissue modification and provide temporary relief from local discomfort. Its overall utility is thus focused on specific, localized interventions where this combined functional benefit is necessary.

What side effects are possible with Anaesthesulf?

Possible Side Effects and Safety Information

The regulatory safety profile for Lauromacrogol 400 (Polidocanol) is established based on documented adverse reactions across various preparations, focusing on local skin effects for the topical use and systemic risks for the compound itself.

Classification of Adverse Reactions

The majority of documented reactions are classified within the Skin and Subcutaneous Tissue Disorders. These effects include local irritation, erythema (redness), and allergic contact dermatitis at the site of application. While specific frequency bands are generally not published for these local topical effects, they constitute the most common safety observations.

Conversely, the compound carries an administration-agnostic risk for Immune System Disorders. Official regulatory labeling documents the potential for anaphylactic shock (anaphylaxis) and generalized urticaria as serious adverse reactions, which are typically classified as Very Rare systemic events.

Safety-Related Restrictions

The most significant safety constraint is the explicit contraindication for use in individuals with a known history of hypersensitivity to polidocanol or any of the inactive ingredients within the formulation. This restriction highlights the risk of severe allergic response, which is documented across all forms of exposure to the substance.

Population-Specific Notes

The safety and effectiveness of the preparation in pediatric patients have not been formally established in clinical studies, leading to cautionary use in this group. For pregnant and lactating women, the official safety data available do not definitively identify a drug-associated risk, but usage must be weighed against minimal benefit in this setting.

Overdose and Emergency Response

The official regulatory profile for an overdose of Anaesthesulf (Lauromacrogol 400) is strictly defined by the potential for severe local and acute systemic consequences.

Documented Overdose Manifestations

Over-exposure may result in a higher incidence of localized reactions. Officially documented outcomes include severe local effects such as tissue necrosis and a break in the skin, which may present with blue-black discoloration or significant swelling. Administration errors, such as intra-arterial injection, can rapidly lead to severe ischemia.

Severe Systemic Consequences

Life-threatening systemic over-exposure is linked to serious events affecting the cardiovascular and immune systems. These officially reported outcomes include anaphylaxis (a severe allergic reaction), cardiac arrest, and circulatory collapse. Regulators note that fatal cases of anaphylaxis have been reported with the active substance.

Mandatory Emergency Actions

Patients must seek immediate medical attention for any signs of a severe allergic reaction, such as trouble breathing or swelling of the face. Urgent help is also required for severe local symptoms. In cases of inadvertent intra-arterial injection, immediate consultation with a vascular surgeon is necessary. Healthcare observation is required for a minimum of 10 minutes following administration to monitor for immediate systemic reactions.

Therapeutic Uses of Anaesthesulf

Quick Facts: Anaesthesulf

  • Primary Therapeutic Domain: Supports the temporary management of localized skin discomfort.
  • Key Areas of Use: May be used to address itching associated with conditions such as chickenpox or shingles.
  • Patient Focus: Primarily intended to help provide relief from pruritus (itching).

What Anaesthesulf treats: main uses and benefits

Anaesthesulf is a topical product used to support the temporary management of localized skin discomfort where itching is a key concern. This medication is indicated for use in addressing pruritus that may be associated with various minor skin conditions.

The therapeutic intent of Anaesthesulf is to help provide symptomatic relief from the persistent sensation of itching. Clinical application may be considered for the management of discomfort related to skin irritations, including those from chickenpox (varicella) and shingles (herpes zoster).

By acting as a local therapeutic option, the lotion supports the overall care strategy for patients experiencing skin distress. The compound's role is to support patient well-being by helping to diminish the perception of itching and minor surface pain in the applied areas.

Eligibility and Restrictions for Use

Who Can and Cannot Use Anaesthesulf?

The population eligibility for Anaesthesulf (topical Lauromacrogol 400) is defined by official regulatory labeling, setting clear boundaries for who may use the medicine.


Populations Allowed and Contraindicated

Classification Eligibility Rule (As Stated in Official Labeling)
Permitted Adults, the elderly, and children are generally permitted to use the topical solution.
Contraindicated Patients with a known allergy or hypersensitivity to Lauromacrogol 400 (Polidocanol) or any component of the preparation must not use it.

Conditions for Non-Eligibility

The medicine is not recommended for use on skin areas exhibiting certain severe local conditions:

  • Severe and widespread reddening of the skin (erythema).
  • Skin that is acutely inflamed, oozing, or infected.

Conditional Use Populations

Population Group Regulatory Status
Children Permitted, but official documentation advises consulting a healthcare professional before use.
Pregnancy Use is generally avoided due to insufficient clinical data.
Lactation Use is generally avoided; application to the breasts immediately before feeding is restricted.

Eligibility criteria are primarily based on hypersensitivity status and the condition of the application site, with no specific systemic restrictions (e.g., severe hepatic or renal impairment) documented for the topical formulation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This section describes the officially documented interaction patterns for Anaesthesulf (Lauromacrogol 400 or Polidocanol) as defined by government regulatory authorities.


Pharmacodynamic Interaction Patterns

The most significant documented interaction is pharmacodynamic, related to the active substance's local anaesthetic classification.

  • Co-administration with other Anaesthetics: The concurrent use of Lauromacrogol 400 with other local or general anaesthetics may result in additive effects on the cardiovascular system. This is a formal caution noted in regulatory documents, requiring consideration when co-administering medicines that share anaesthetic properties.

Pharmacokinetic Interaction Status

Official prescribing information for Lauromacrogol 400 formulations states that no specific drug-drug interaction studies have been conducted to assess the potential for the product to alter the plasma concentration or clearance of other medicines. Consequently, there are no documented metabolic (CYP-mediated) or transporter-based interactions identified in regulatory labeling.

Formulation and Substance Considerations

Some medicinal preparations containing Lauromacrogol 400 include ethanol (alcohol) as a co-ingredient or excipient. Regulatory documents include a formal note regarding this excipient consideration for specific patient histories, such as those with former alcoholism. No interactions with food, supplements, or herbal products are formally documented in official prescribing information.


Note: No specific medicinal product combinations are classified as formally contraindicated due to interaction risk, and no mandatory timing separation rules are documented.

Mechanism of Action

️Modulation of Voltage-Gated Sodium Channel Function

Anaesthesulf, containing Macrogol-9-laurylether, operates by modulating peripheral nervous system activity through targeted interaction with excitable cell membranes. The active component acts within domains involving ion-channel-mediated signaling, specifically functioning as an inhibitor of voltage-gated sodium channels present on the axonal membranes of afferent nerve fibers.


Disruption of Action Potential Propagation

This mechanism initiates a molecular cascade by directly stabilizing the neuronal membrane at the binding site, thereby preventing the necessary transmembrane sodium ion influx required to reach the threshold potential for depolarization. This action disrupts the rapid electrochemical sequences that underpin action potential generation and propagation along the axon.


Modulation of Afferent Signal Integration

By disrupting the propagation of these afferent signals, Anaesthesulf modifies signal integration at the local nerve endings. This physiological modulation limits the rapid transmission of stimuli-induced signaling and supports a regulated state of peripheral neural excitability within the targeted pathway.

Dosage and Administration Information

Instruction Map: How to use Anaesthesulf — official administration guidelines

Anaesthesulf (Lauromacrogol 400) is a lotion intended for cutaneous application. The official instructions for use emphasize proper technique, adherence to dosing frequency, and strict limits on the duration of use, especially for children.


Administration scope

Feature Official Guidelines
Route of administration Cutaneous use (applied to the skin).
Dosing schedule A sufficient amount applied to the itchy skin areas one to several times daily, distributed throughout the day.
Timing in relation to meals Not applicable.
Preparation requirements Shake the bottle well before use. The preparation should be applied thinly to the affected areas with a cotton swab or over a large area.
Age-group administration rules Adults and Children: The drug is used in babies, children, and adults. It must not be used in premature babies in the first weeks of life.
Missed-dose rules Continue treatment immediately with the amount previously used. Do not use a double quantity to make up for a missed application.
Special procedural conditions Avoid accidental contact with the eyes. For women who are breastfeeding, the preparation should not be applied to the breast.

Instruction classifications (high-level)

Classification Detail
Administration method type Topical (Lotion).
Frequency pattern Multiple times daily (as-needed).
Regulatory basis Regulatory documents for European markets.
Use-context constraints Maximum duration of use for all age groups is 1 week. Adults should consult a doctor if use is desired for longer than one week.

Resulting procedural structure

Official step sequence:

  • Shake the bottle well immediately before each application.
  • Apply an adequate amount of the lotion thinly to the affected skin area(s).
  • Repeat the application one to several times daily, as needed.
  • After the treatment is complete, the remaining suspension can be rinsed off with lukewarm water.

Recent Clinical Evidence

Anaesthesulf Lotio is an over-the-counter topical medication used for the relief of itching (pruritus), commonly associated with conditions such as chickenpox (varicella) and shingles (herpes zoster). The primary active ingredient in Anaesthesulf is Lauromacrogol 400 (also known as Polidocanol), which is classified as a local anesthetic.

Mechanism of Action and Efficacy

The local anesthetic effect of Lauromacrogol 400 stems from its ability to block nerve pathways that register and transmit pain and itch signals to the brain. This action provides an immediate, localized numbing and soothing effect on the skin, reducing the perception of itch and pain. Additionally, its application may reduce sensitivity to cold, heat, and pressure in the treated area.

Anaesthesulf Lotio is formulated as a suspension containing Lauromacrogol 400, often combined with Zinc Oxide and Talc. The non-active components contribute to the formulation's physical properties as a 'shaking mixture' (schüttelmixtur), which is designed to have a cooling, drying, and protective effect on irritated skin. Zinc oxide is an established mild astringent and skin protectant, which supports the symptomatic relief of skin irritation and weeping lesions commonly seen in conditions like chickenpox. This multi-component approach aims for quick, multi-symptom relief.

Clinical and Real-World Use

Clinical experience and patient-reported outcomes confirm the lotion's efficacy in providing prompt relief from acute itch due to its local anesthetic effect. Because Lauromacrogol 400 is not systemically absorbed to a significant degree when applied topically, it is generally considered to have a favorable safety profile, particularly for short-term use in all age groups, including infants and children (excluding premature babies). Usage instructions typically advise against application for longer than one week without medical consultation. Adverse effects have been reported only in rare, isolated cases.

Frequently Asked Questions (FAQ)

Common questions about Anaesthesulf (FAQ)


Q: Can I use over-the-counter pain medicines while using Anaesthesulf?

Official product information indicates that Anaesthesulf may have an additive effect if used with other local or general anaesthetics. However, official documents do not typically contain specific warnings regarding common, non-anaesthetic over-the-counter pain relievers. Information regarding combined use of these medicines with Anaesthesulf is best confirmed by a healthcare provider.


Q: Does Anaesthesulf interact with alcohol?

According to regulatory documentation, some formulations of Anaesthesulf contain ethanol (alcohol) as a non-active ingredient, which is noted for patients with a history of alcoholism. There is no formally documented interaction with the consumption of alcohol for the topical solution.


Q: How quickly does Anaesthesulf usually begin to work?

The medicine's active component works by blocking nerve pathways in the skin that transmit itch signals. This mechanism of action supports the clinical observation that Anaesthesulf provides prompt relief of symptoms. While a precise numerical time frame is not always specified, the effect is localized.


Q: Why is professional administration often required for Anaesthesulf?

Anaesthesulf's active substance is used in two different forms: a topical lotion and a specialized injectable solution. Professional administration is required for the injectable solution, which is used for specialized procedures like sclerosing agents in phlebology. The topical lotio form is generally available over-the-counter.


Q: What role does Anaesthesulf play in a typical medical procedure?

The role of the topical Anaesthesulf lotio is to provide localized symptomatic relief from itching, particularly for common conditions such as chickenpox and shingles. Its action as a local anesthetic is specifically intended to soothe irritated skin and reduce the perception of itch.


Q: What are the common physical sensations that patients might report after receiving Anaesthesulf?

The local anesthetic action of the medicine typically causes a localized numbing and soothing effect where the lotio is applied. This physiological modulation may also lead to a reduced sensitivity to cold, heat, and pressure within the treated area.


Q: What is the difference between a minor side effect and a serious adverse reaction to Anaesthesulf?

Regulatory documents classify adverse reactions into categories to distinguish between minor and serious effects. Minor effects are typically common, local skin reactions like irritation. Serious adverse reactions, such as anaphylactic shock or generalized urticaria, are classified as rare systemic events.


Q: What are the limitations of the existing research or clinical trials on Anaesthesulf?

Official regulatory texts describe certain limitations, often noting that the safety and effectiveness for a particular group, like pediatric patients, have not been formally established in comprehensive clinical studies. Similarly, some formal studies, such as those for drug-drug interactions, may be noted as not having been conducted for the topical formulation.


Q: How do regulatory bodies characterize the risk-benefit profile of Anaesthesulf?

The regulatory characterization is based on the official approval for the medicine's specific purpose. For the topical lotio, minimal systemic absorption supports a generally favorable safety profile when used according to the product's official instructions for short-term, localized relief.


Q: What is the significance of the research evidence themes for Anaesthesulf?

The themes in the research evidence confirm the medicine's established use based on clinical experience. The significance lies in the confirmed local anesthetic effect of the active substance, which provides the mechanism for effective symptomatic relief of itch.


Q: What is the expected duration of the effects of Anaesthesulf?

Official product information describes the anesthetic effect as providing temporary relief. This effect is typically stated to last for a duration of up to four to six hours following application.


Q: Is Anaesthesulf described as a controlled substance in major countries?

According to official regulatory records, Anaesthesulf is not classified as a controlled substance by the US Drug Enforcement Administration (DEA) or equivalent bodies in other major regions. This means it is not subject to the same strict controls as certain narcotics.


Q: Does Anaesthesulf carry any specific regulatory warnings, such as a black box warning?

The official US labeling does not include a Black Box Warning for the topical formulation of Anaesthesulf. This type of prominent warning is typically reserved for drugs with specific, serious safety concerns.


Q: Does Anaesthesulf affect the ability to drive or operate machinery?

Regulatory documents include a specific section addressing the impact on daily activities. For the topical solution, official information states that effects on the ability to drive or operate machinery are not expected.


Q: Is Anaesthesulf described as having potential for dependence or being habit-forming?

The topical product is not known to be habit-forming, according to regulatory labeling. Furthermore, official product information indicates that it has no documented potential for physical or psychological dependence.


Q: Is Anaesthesulf known to affect mood or mental status?

According to the official safety information, effects on mood or mental status are not listed among the documented systemic adverse reactions for the topical formulation of this medicine.


Q: Is Anaesthesulf a generic or a brand-name drug?

Anaesthesulf is the brand name given to the medicine in certain regions. The active ingredient is Lauromacrogol 400, which is the International Nonproprietary Name (INN) also known as Polidocanol.


Q: Are there any known effects of Anaesthesulf on fertility?

Official documentation regarding fertility states that there is no specific clinical data on the effects of topical Anaesthesulf on human fertility.


Q: Does Anaesthesulf cause changes in appetite or weight?

According to the official listing of side effects, changes in appetite or weight are not listed among the documented adverse reactions for this medicine.


Q: What does the official documentation say about accidental overdose with Anaesthesulf?

The official labeling contains a section on accidental overdose. It states that overdose for the topical solution is unlikely due to minimal systemic absorption, and the labeling outlines the processes for managing events like accidental ingestion or excessive use.


Q: What are the known considerations regarding exposure to sunlight while using Anaesthesulf?

Official warnings and precautions caution against applying the medicine to large areas of skin. This is particularly important for skin areas that may be exposed to direct sunlight following application.


Q: Is Anaesthesulf a prescription-only medicine in most regions?

The regulatory status of Anaesthesulf Lotio in European markets is generally that of an over-the-counter (OTC) medication. This means it is available for purchase without a prescription.

How should Anaesthesulf be stored and disposed of?

How to Store and Dispose of Anaesthesulf

The storage and disposal of Anaesthesulf (Lauromacrogol 400 Topical Solution) must adhere strictly to the conditions specified in official regulatory labeling.

Item Official Storage Requirement
Temperature Control Store the product at a temperature not above 25 °C.
Environmental Rule Do not refrigerate or freeze the medicine.
Container & Protection Keep the container tightly closed and store in the original package, protected from light.
Safety Requirement The medicine must be kept out of the sight and reach of children.
Stability Rule Do not use Anaesthesulf after the expiry date (EXP) stated on the packaging.
Disposal Rule Do not dispose of via wastewater or household waste; consult a pharmacist for local disposal requirements.

These official rules ensure product stability until its expiry date and safeguard against misuse or environmental contamination.

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

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