Sédorectal

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Sédorectal

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 Sédorectal

Property Description
Active ingredient Benzocaine (ethyl 4-aminobenzoate)
Form Suppository, Ointment
Pharmacological class Topical Local Anesthetic
Common use Providing temporary relief from localized pain and discomfort
Origin Synthetic

What Type of Medicine is Sédorectal?

Sédorectal is a pharmaceutical preparation classified as a Topical Local Anesthetic, a type of medicine specifically designed to numb sensation directly at the point of application. It is primarily formulated in suppository or ointment form, which are specialized dosage forms for highly localized application to mucous membranes. The drug belongs to the broader pharmacological category of Amino Ester anesthetics, distinguishing it by its rapid-onset action and limited systemic absorption. As a highly localized anesthetic for mucous membranes, the medicine's main function is to quickly numb the area where it is applied.

Sédorectal’s Core Composition: The Role of Benzocaine

The therapeutic efficacy of Sédorectal stems from its single active ingredient, Benzocaine, which is a synthetic compound. Benzocaine acts as the principal agent, delivered within a suitable non-active base or vehicle—such as a fatty matrix or emollient cream—which ensures adherence and absorption by the target tissue. Benzocaine is the chemical entity ethyl p-aminobenzoate, created for this specific therapeutic purpose. The use of a semi-solid base in preparations like the suppository is integral to the product's identity, ensuring the active ingredient is optimally delivered to and maintained on the intended surface for sustained localized action.

How Does the Local Anesthetic Class Provide General Relief?

This class of medicine provides relief by reversibly interrupting the transmission of sensory signals from localized nerve endings to the brain. Benzocaine achieves this by temporarily blocking the sodium channels within the nerve membranes, preventing the nerves from generating the electrical impulses that would register as pain or itching. The resulting general benefit is a swift, localized loss of sensation, which makes acute discomfort or irritation in the area of application immediately more bearable. This action ensures relief is concentrated at the application site without affecting nerve function elsewhere in the body.

Regulatory References

  1. Benzocaine Topical (MedlinePlus)

What side effects are possible with Sédorectal?

Possible Side Effects and Safety Information

The safety profile of Sédorectal, containing the topical local anesthetic Benzocaine, is formally documented by regulatory bodies and structured around both common localized effects and rare but serious systemic risks.

Official Adverse Reaction Scope

Category Description and Classification
Common Local Reactions Adverse reactions classified as common or expected include burning, stinging, localized irritation, redness (erythema), and contact dermatitis. These typically fall under Skin and Subcutaneous Tissue Disorders.
Serious Systemic Risk The most significant, though rare, safety concern is Methemoglobinemia, a blood disorder that compromises the blood’s ability to carry oxygen. This reaction is classified under Blood and Lymphatic System Disorders.
Rare Hypersensitivity Systemic allergic reactions, including severe hypersensitivity, are documented as rare events under Immune System Disorders.

Population-Specific Safety Constraints

Regulatory documents emphasize specific safety constraints for vulnerable groups. Infants and children under two years of age are formally identified as being at a significantly greater risk for developing Methemoglobinemia, leading to restrictions on use in this population. Furthermore, patients with underlying health conditions such as heart disease, breathing problems (e.g., asthma), or certain genetic deficiencies (like G6PD deficiency) are noted to be at an increased risk of complications from this systemic reaction. The onset of Methemoglobinemia can occur shortly after the first use or after subsequent applications.

Safety-Related Limitations

Use is formally restricted for individuals with a known hypersensitivity or allergy to Benzocaine or related ester-type local anesthetics. The official safety framework restricts the medicine to ensure it is not used in populations where the risk of the serious systemic event is demonstrably heightened.

Overdose and Emergency Response

Overdose and when to seek help

The official overdose profile for Sédorectal, containing Benzocaine, is defined by the risk of developing Methemoglobinemia, a potentially life-threatening condition documented in regulatory sources. This toxicity arises from excessive systemic absorption of the active ingredient and is explicitly associated with severe outcomes, including death.


The regulator-documented clinical manifestations of overdose primarily relate to a reduction in the blood's oxygen-carrying capacity. These signs include visible changes such as cyanosis—a pale, gray, or blue discoloration of the skin, lips, or nail beds. Further documented symptoms include headache, mental confusion, shortness of breath (Dyspnea), and compensatory rapid heart rate (Tachycardia).


Emergency Actions and Help-Seeking

Any observation of these specific signs necessitates adherence to the regulator-mandated emergency actions. These actions explicitly require the user to stop use of the product immediately and to seek immediate medical attention by contacting emergency services or a poison help line. In a regulatory context, the specific pharmacological intervention documented for treating severe methemoglobinemia is the administration of Methylene blue.

Regulatory documents also highlight that infants and children younger than 2 years are a high-risk population, and patients with pre-existing heart or breathing problems face a heightened risk of complications from oxygen deprivation.

Therapeutic Uses of Sédorectal

Sédorectal is primarily associated with the supportive management of symptoms related to specific anorectal conditions. Its principal role is to help ease localized discomfort and reduce symptomatic irritation experienced during an acute episode. Clinicians may consider its use for several common clinical scenarios, including the temporary management of symptoms of internal and external hemorrhoids, and for providing relief related to anal irritation following proctological procedures. The goal of this supportive care is generally focused on promoting functional comfort and assisting the patient in maintaining daily activities when symptoms are active. As the primary benefit is symptomatic relief, it may be used in conjunction with other long-term treatment strategies as advised by a healthcare provider.

“The treatment approach centers on temporary symptom alleviation.”

In summary, the medication may be considered when a patient requires assistance with easing localized soreness, managing mild swelling, and addressing irritation or itching in the perianal area.


Quick Fact: Relief for Localized Discomfort


Eligibility and Restrictions for Use

Who can and cannot use Sédorectal?

The eligibility for Sédorectal is strictly defined by regulatory documents, establishing clear criteria for approved use and absolute prohibitions based on age, allergy, and local application status.

Category Official Eligibility Status
Contraindicated Populations The medicine is strictly prohibited for use in patients with a documented allergy or hypersensitivity to Benzocaine or any related local anesthetics (known as "caine" type anesthetics). Additionally, use is absolutely contraindicated for all children under 2 years of age.
Age-Related Eligibility Adults and adolescents 12 years of age and older are approved for standard use. Children aged 2 to 12 years are only permitted to use the product under the direct supervision of an adult, reflecting conditional use for this age group.
Conditional Use Status Regulatory documents specify a conditional use status for women who are pregnant or breast-feeding, requiring these individuals to ask a health professional prior to use for an individual assessment of eligibility.
Condition-Specific Restrictions Use of this medicine is prohibited for relieving teething pain. Furthermore, application is not allowed on raw surfaces, blistered areas, or on broken skin. The medicine must also not be used in large quantities or over extensive areas of the body.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents require a comprehensive description of how a product interacts with other medicines, drug classes, or substances. Although specific, centralized labeling for Sédorectal is not readily accessible in major global regulatory databases (such as the FDA, EMA, or NIH), the interaction profile, if published, would be structured around the following clinically significant domains:

Interaction Domain Primary Concern (Regulatory Focus)
Pharmacokinetic (PK) Interactions Altered drug levels due to effects on metabolic enzymes (e.g., Cytochrome P450) or cellular transporters, affecting drug absorption or elimination.
Pharmacodynamic (PD) Interactions Additive or opposing effects on the body's systems when taken with other agents, potentially increasing the risk of a specific clinical outcome.
Food and Beverage Specific dietary items that could significantly alter the drug's exposure or clinical effect.

Regulatory agencies classify these interactions to provide clear management instructions, which may include avoiding certain combinations, implementing clinical monitoring, or observing strict timing requirements between co-administered products. Any officially documented interaction profile would explicitly list co-administered drugs or drug classes that necessitate dosage adjustment, increased monitoring, or absolute avoidance. The constraint for Sédorectal is the lack of a public, government-issued document detailing its specific interaction list.

Mechanism of Action

The function of Sédorectal is strictly defined by the pharmacodynamic action of its active ingredient, Benzocaine, which operates via the localized and reversible interruption of nerve signaling.

This mechanism begins with the direct physical blockade of Voltage-Gated Sodium Channels (NaV channels) on peripheral sensory nerve membranes. Benzocaine penetrates the nerve membrane and binds within the channel's inner pore, stabilizing the channel in a closed, non-conducting state. This action prevents the necessary influx of sodium ions (Na^+) and arrests the electrical process of neuronal depolarization.

By stopping the flow of ions, the drug inhibits the formation and propagation of the action potential along the nerve fiber. This molecular effect translates into the interruption of the peripheral nociceptive signaling cascade, resulting in a localized cessation of nerve conduction and the physiological consequence of suppressed afferent signaling.

The mechanism's rapid engagement is due to the drug’s low pKa, which ensures the molecule is predominantly in its lipophilic, non-ionized form, enabling quick and efficient penetration of the nerve membrane to initiate channel blockade and dictate the rapid establishment of the localized physiological effect.

Dosage and Administration Information

Official Administration Guidelines

Sédorectal is a pharmaceutical product strictly intended for localized administration to the affected anorectal area. Its usage protocol is standardized and defined, governing both the available dosage forms and the necessary application constraints.

Category Official Administration Parameter
Route of administration Topical (External/Perianal) and Rectal (Intrarectal insertion)
Labeled Dosing Schedule Application of the ointment (typically 5% to 20% Benzocaine) or insertion of one suppository unit.
Frequency Pattern Application or insertion is permitted up to 3 to 6 times daily, based on standard parameters for the topical anesthetic class.
Preparation Requirements The affected area must be cleansed with mild soap and water and gently dried before applying the medicine.
Age-Group Rules Use in children under 12 years requires guidance from a healthcare professional; the product is prohibited for use in children under 2 years of age.

Use Context and Duration

Resulting Procedural Structure

The official step sequence for using Sédorectal involves the prerequisite cleansing and drying of the area, followed by the localized administration of the unit dose. The overall usage protocol is defined by its temporary nature. The instructions limit the self-administration period to a maximum of 7 consecutive days. This constraint ensures that the medicine is used for short-term symptomatic relief only and is not applied more often than the prescribed daily frequency.

Recent Clinical Evidence

Sédorectal: Recent Clinical Evidence


Research on the effectiveness of topical treatments for hemorrhoidal symptoms generally focuses on agents that aim to reduce inflammation, provide local pain relief, and protect the affected tissue. Sédorectal contains two main active components: Policresulen and Cinchocaine hydrochloride.

Evidence for Active Components

Clinical studies related to the individual components suggest specific localized actions:

  • Policresulen: This agent is primarily associated with its hemostyptic (bleeding-stopping) and astringent properties. Research suggests it acts by coagulating protein and inducing muscle fibers of small vessels to contract, which may help to control bleeding and assist in tissue regeneration within the anal canal or perianal area. It has been investigated for its ability to treat certain grades of hemorrhoidal disease.

  • Cinchocaine hydrochloride: As a local anesthetic, cinchocaine aims to provide temporary, localized relief from acute pain and itching. This effect is thought to result from a reversible block to nerve impulse conduction, which raises the pain threshold and may contribute to patient comfort during acute episodes.

Treatment Outcomes

While direct, large-scale randomized controlled trials (RCTs) specifically on the Sédorectal formulation may be limited, studies on similar multi-component suppositories and ointments for hemorrhoidal symptoms often report on common outcome measures. These include patient-reported improvement in symptoms such as pain, pruritus (itching), bleeding, and overall discomfort.

Observational data and clinical experience with combination products suggest that a localized treatment approach combining an astringent/hemostyptic with a local anesthetic may offer symptomatic relief for external and internal hemorrhoids, particularly in milder grades of the disease.

Frequently Asked Questions (FAQ)

Common questions about Sédorectal (FAQ)


Q: Is Sédorectal considered a pain reliever or is it for something else?

The medicine is classified as a Topical Local Anesthetic, which is a type of drug designed to numb sensation directly at the point of application. Its primary function is to provide temporary relief from localized pain and discomfort by localized action.


Q: How quickly do people typically notice an effect from Sédorectal?

Official documents describing the mechanism of action state that the product is formulated to enable the rapid establishment of its localized physiological effect. This indicates that the numbing action is intended to begin quickly after application.


Q: What is the intended duration of a course of treatment with Sédorectal?

Official usage constraints specify that self-administration must be limited to a maximum of seven consecutive days. If symptoms do not improve within this timeframe or if they worsen, official product information notes that consultation with a health professional is necessary.


Q: What are the general expectations for relief when using Sédorectal?

The medicine is officially indicated to provide temporary relief from localized symptoms. These general expectations include the relief of pain, discomfort, and itching at the site of application.


Q: What is Sédorectal meant to achieve besides temporary relief?

One of the active components is associated with properties that extend beyond simple numbing. Official evidence suggests this component is associated with astringent and hemostyptic properties, which may help with minor bleeding.


Q: What is the evidence regarding Sédorectal's effectiveness?

Research on the active components and similar products suggests that the combination of ingredients provides symptomatic relief. The medicine has been studied for its ability to address common symptoms like pain, discomfort, and bleeding.


Q: What kind of research has been done on the long-term use of Sédorectal?

Regulatory documents do not support the use of this product for extended periods. The maximum self-administration period is restricted to seven consecutive days, and official warnings are provided against prolonged use.


Q: Do regulatory agencies classify Sédorectal as having abuse potential?

The drug’s active ingredient is not classified as a controlled substance by major regulatory bodies. This indicates that the medicine is not formally recognized as having significant abuse potential.


Q: Can Sédorectal cause sleepiness or drowsiness?

Regulatory documents note that the drug's class (local anesthetics) has the potential to cause rare nervous system effects. These potential side effects, which may include dizziness and drowsiness, are mentioned in official labeling.


Q: Does Sédorectal have a warning about driving or operating machinery?

Due to the potential for rare nervous system effects like dizziness or drowsiness, official regulatory information notes that caution is advised when operating machinery or driving.


Q: Is it normal to feel a mild burning sensation when using Sédorectal?

Yes, a mild burning or stinging sensation at the application site is listed in official safety information as a common or expected local reaction. This effect is generally a temporary and localized one.


Q: What happens if Sédorectal is used on broken skin?

Application to broken skin or mucous membranes is prohibited because it may increase the systemic absorption of the active ingredient. Increased absorption can potentially raise the risk of serious systemic adverse effects.


Q: What conditions are known to be worsened by Sédorectal?

Official eligibility rules prohibit the medicine's use on raw surfaces, blistered areas, or broken skin. Application to these areas may increase the risk of adverse effects from the medicine.


Q: Can Sédorectal be used if I have a history of heart conditions?

Regulatory documents indicate that patients with certain underlying health conditions, including heart disease, may be at an increased risk for complications from a rare systemic side effect. Official documents state a conditional use status for these individuals, requiring that a health professional be consulted prior to use.


Q: Is Sédorectal generally considered suitable for older adults?

Official eligibility rules do not restrict use based on advanced age alone. However, patients with underlying health issues common in older adults, such as heart or breathing problems, are noted to be at an increased risk for a rare, serious systemic side effect.


Q: Are there warnings about using Sédorectal during pregnancy?

Official regulatory guidelines classify use during pregnancy as conditional due to a lack of comprehensive data on fetal risk. Therefore, for women who are pregnant or may become pregnant, the official status requires that a health professional be consulted prior to use.


Q: Is there an age minimum for using Sédorectal?

The medicine is strictly prohibited for use in children under two years of age. For children aged 2 to 12 years, use is conditional and only permitted under the direct supervision of an adult.


Q: Are there different strengths or dosages of Sédorectal available?

According to official administration guidelines, the medicine is available in various forms, such as unit suppositories and ointment. These products may come in different labeled concentrations of the active ingredient (e.g., 5% to 20% ointment).


Q: Why is it important to check the full list of ingredients in Sédorectal?

Regulatory documents describe the need to check the full ingredient list to confirm eligibility and avoid use in case of a known hypersensitivity or allergy to the active ingredient or other related anesthetic compounds.


Q: Does Sédorectal have any known effect on fertility?

Official information indicates that studies have not been conducted to determine the drug's effect on human fertility. As such, the impact on fertility is not known.


Q: Is Sédorectal available without a prescription in some places?

The regulatory legal status of the active ingredient varies by region but is often classified as an over-the-counter (OTC) medicine for topical use in many countries.

How should Sédorectal be stored and disposed of?

How to Store and Dispose of Sédorectal

Official Storage Requirements

Sédorectal (Benzocaine Suppository/Ointment) must be stored at controlled room temperature, typically between 15 C to 30 C (59 F to 86 F), and must not exceed 30 C to maintain its physical integrity. Excessive heat must be avoided, and the product should be protected from freezing. The medicine must be kept in its original container, which should remain tightly closed.

Child-Safety and Disposal

All medicine must be stored securely out of the reach of children. For disposal of unused or expired product, the preferred method is an official drug take-back program. If one is unavailable, the product should be mixed with an undesirable substance, placed in a sealed container, and then discarded in the household trash; the medicine should not be flushed.

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

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