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Bencyclane fumarate

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Bencyclane fumarate

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Method of action: Myotropic Antispasmodic

Treatment option:

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.

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Overview of Bencyclane fumarate

Property Description
Active ingredient Bencyclane
Form Tablets, Capsules, Injection
Pharmacological class Vasodilator, Spasmolytic, Calcium Channel Blocker
General use Management of circulatory disturbances
Origin Synthetic small molecule

What Kind of Medicine is Bencyclane Fumarate and What is its Purpose?

Bencyclane fumarate is a synthetic small molecule drug primarily classified as a peripheral vasodilator agent and a spasmolytic, typically provided by prescription. The active substance, Bencyclane, is classified under the ATC code C04AX11, confirming its categorization among Other Peripheral Vasodilators. The medicine is clinically recognized for managing symptoms associated with circulatory disturbances, offering support in cases such as restricted blood flow in the extremities. The therapeutic intent is centered on the restoration of proper blood flow by acting directly on the vascular system.

Composition and Forms: The Bencyclane Active Ingredient

The therapeutically active substance is the international nonproprietary name (INN) Bencyclane (C19H31NO), which is administered as its stable salt form, Bencyclane fumarate (C23H35NO5). This structure involves combining the active Bencyclane with fumaric acid. As a single-ingredient product, bencyclane fumarate is provided for both oral administration in preparations such as tablets and capsules, and for parenteral delivery via solutions for intravenous administration.

How Does Bencyclane Fumarate Improve Blood Flow?

The mechanism by which Bencyclane fumarate works is largely defined by its activity as a cation channel blocker, which is consistent with its designation as a calcium channel blocker. By regulating this process, the drug causes vasodilation (widening of the vessels) and promotes smooth muscle relaxation. This effect ultimately reduces resistance in the vessels, which is the functional basis for improving blood flow and facilitating enhanced oxygen supply to affected tissues in conditions of restricted vascular passages. This mechanism facilitates the easing of vascular tension.

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What side effects are possible with Bencyclane fumarate?

Possible side effects and safety information

The official safety documentation for Bencyclane fumarate organizes potential reactions into categories defined by frequency and the affected body system, adhering strictly to regulatory standards.

Adverse Reaction Scope

Side effects are primarily reported across three main System-Organ-Classes (SOCs), as classified in official labeling. These include Gastrointestinal disorders (e.g., nausea, abdominal discomfort), Nervous system disorders (e.g., dizziness, headache, fatigue), and Cardiac or Vascular disorders (e.g., hypotension, palpitations).

Reactions such as dizziness, headache, and certain gastrointestinal symptoms are typically classified as common in the regulatory documents. These effects are often noted to be generally mild and may diminish as the body adjusts during the initial phase of treatment or following dosage adjustments.

Serious Adverse Reactions and Safety Constraints

The official safety profile explicitly documents the risk of less common but medically significant events. These serious adverse reactions include severe Central Nervous System (CNS) effects, such as psychotic episodes, convulsions, or coma. The regulatory information also highlights the potential for severe hypotension and serious hypersensitivity reactions.

Safety limitations include the absolute contraindication for individuals with a known hypersensitivity to the active substance. Furthermore, caution is required for patients with severe liver impairment or severe kidney impairment, as these conditions can affect how the medicine is processed and eliminated by the body.

Regulatory Safety Summary

The official documentation provides a clear structure that distinguishes between common and generally mild adverse effects and rare, serious events. This framework also defines critical high-level constraints and specific cautions for populations with organ impairment, ensuring that the understanding of the medicine’s risk profile remains strictly aligned with governmental regulatory classification.

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Overdose and Emergency Response

Bencyclane fumarate overdose is associated with severe, potentially life-threatening systemic collapse consistent with its classification as a calcium channel blocker. Officially documented clinical manifestations involve major compromise to the cardiovascular system, typically presenting as slow heartbeat (bradycardia) and irregular heartbeat. Neurological symptoms include drowsiness, confusion, and slurred speech. Gastrointestinal signs like nausea and vomiting may also be present.

A severe overdose is classified as a medical emergency due to the high risk of progression to shock (extremely low blood pressure), circulatory insufficiency, and profound central nervous system effects such as convulsions and coma. Respiratory insufficiency, including cardiogenic pulmonary edema, is a documented severe outcome requiring immediate intervention.

Immediate medical help must be sought right away for any suspected overdose. The official regulatory guidance focuses on intensive symptomatic and supportive treatment and notes that no specific antidote is known. Management procedures include monitoring with ECG and addressing hypotension through the possible use of pressure amines and calcium administration, which may require mechanical ventilation. The guidance also advises against attempting to induce vomiting.

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Therapeutic Uses of Bencyclane fumarate

What Bencyclane Fumarate Treats: Main Uses and Benefits

Bencyclane fumarate is generally applied across domains where additional symptomatic support is needed for various circulatory issues. The agent is considered relevant for easing symptoms in a variety of peripheral circulation disorders.

The medication is commonly used to help with conditions presenting with symptomatic discomfort related to chronic peripheral arterial occlusive disease (PAOD) and in vasospastic syndromes like Raynaud's phenomenon. It is applied in addressing key symptom clusters including intermittent claudication (pain when walking), associated coldness and numbness in the extremities, and functional deficits such as dizziness or tinnitus when linked to microcirculatory deficits. The application is relevant for easing symptoms that interfere with mobility and general comfort.

Quick Fact: Used for Managing Vascular Symptoms

The supportive relief provided may assist patients in coping more steadily with symptom fluctuations. The treatment may assist with maintaining functional stability by easing physical strain, supporting patients during episodes of heightened discomfort caused by impaired circulation.

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Eligibility and Restrictions for Use

Who Can and Cannot Use Bencyclane Fumarate: Official Regulatory Information

Official regulatory documents define strict criteria for the use of Bencyclane fumarate, focusing on absolute contraindications and specific population restrictions. Use is primarily established for the adult population for approved circulatory indications.


Contraindicated Populations

Use is strictly prohibited for individuals with:

  • Known hypersensitivity to the active substance or excipients.
  • Acute cerebral haemorrhage.
  • History of convulsive illness or epilepsy.
  • Severe cardiac arrhythmia.
  • Acute myocardial infarction.

Restricted and Non-Recommended Use

Population Group Eligibility Status
Pediatric Patients (Children/Adolescents) Use Not Recommended (Safety/efficacy not established)
Pregnancy/Lactation Use Not Recommended
Severe Renal/Hepatic Impairment Conditional Use (Requires special caution/monitoring)

Eligibility is also restricted for elderly patients and those with non-severe cardiovascular conditions, requiring increased medical supervision. The regulatory profile dictates that those with high-risk acute cardiac or neurological conditions must not use the medicine.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory documentation defines the interaction profile of Bencyclane fumarate based primarily on the potential for pharmacodynamic reinforcement—meaning additive effects when combined with other medications that share similar properties. Official prescribing information identifies several substance categories that require caution and monitoring during co-administration.

Documented Pharmacodynamic Interaction Categories

Interacting Product Category Official Description of Interaction Risk
Other Vasodilators Documented risk of additive hypotensive effects, leading to increased potential for low blood pressure.
Anticoagulants/Antiplatelet Agents Regulatory warnings advise of a potential increased risk of bleeding.
Antiarrhythmic Agents Caution is advised due to the potential for additive cardiac effects, consistent with Bencyclane's known calcium channel blocking activity.
Central Nervous System (CNS) Depressants Official documents cite caution regarding the potentiation of depressant effects.

Other Officially Noted Interaction Constraints

Co-administration with alcohol is officially noted as a combination where the effects of alcohol may be potentiated. Furthermore, regulatory documents specify that the risk of interactions and adverse events may be heightened in patients with severe hepatic or renal impairment due to the potential for reduced drug clearance.

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Mechanism of Action

Cation Channel Blockade and Smooth Muscle Relaxation

Bencyclane's main mechanistic domain is the non-competitive blockade of L-type Calcium Channels ( Ca V) on the cell membranes of vascular smooth muscles. This action inhibits the influx of calcium ions required for cellular contraction, initiating a cascade that leads directly to spasmolysis (smooth muscle relaxation) and vasodilation (widening of vessels).

️ Membrane Stabilization in Excitable Tissues

A secondary but complementary mechanism involves a use-dependent blockade of Voltage-gated Sodium Channels ( Na V) in excitable tissues. By interfering with sodium movement, the drug contributes to the stabilization of the electrical activity of these membranes, which helps dampen hyper-excitability and contributes to its overall spasmolytic action.

Direct Inhibition of Platelet Function

Bencyclane also exerts a direct anti-aggregatory effect by stabilizing platelet membranes, thereby inhibiting their activation and tendency to clump together. This action provides a separate physiological effect by reducing the tendency toward cellular blockage within the microvasculature, supporting the physiological process of perfusion alongside its vasodilating effect.

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Dosage and Administration Information

How to Use Bencyclane Fumarate: Administration Guidelines

Bencyclane fumarate is used according to distinct administration protocols for managing chronic symptoms versus acute vascular events. The substance is recognized under the ATC code C04AX11.


Administration and Dosage Regimens

Instructions differentiate the method of use based on the medical context and the available form, which includes both tablets and a solution for injection.

Usage Entity Map Usage Instructions and Parameters
Dosage Forms Tablets (100 mg strength) for oral, long-term administration.
Solution for Injection (50 mg or 100 mg per unit) for parenteral use.
Routes Oral (for maintenance); Intravenous (IV) (for acute conditions).
Dosing Oral Dose: The adult daily total dose ranges from 100 mg to 400 mg. – IV Dose: Acute administration involves 50 mg or 100 mg per injection.

Procedural and Timing Instructions

The usage protocol establishes specific timing and procedural constraints that define proper administration.

Category Procedural Constraint
Frequency The total daily oral dose is divided for administration multiple times per day, typically 2 or 3 separate doses.
Intake Timing Oral tablets should be taken with meals.
IV Procedure Intravenous injections must be administered slowly.
Course Duration The medication is intended for long-term use, reflecting the nature of chronic vascular disorders.

This structured approach ensures that the form, strength, and route of Bencyclane fumarate are applied consistently, differentiating between maintenance and acute clinical needs.

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Recent Clinical Evidence

Evidence for Use in Circulatory Disturbances: Intermittent Claudication

Research on Bencyclane fumarate has been studied for conditions characterized by functional limitations associated with Chronic Peripheral Arterial Occlusive Disease (PAOD). The primary research consists of Randomized Controlled Trials (RCTs), including studies that compared the medicine against a placebo in a double-blind setting. The primary populations studied were adults with conditions marked by functional limitations (Fontaine Stage IIa), who experienced symptoms such as Intermittent Claudication.

In these studies, research examined a variety of outcomes reflecting daily functioning or activity level. Researchers focused on functional metrics such as a patient's pain-free walking distance and the overall maximum distance they could walk during standardized tests. Studies monitored how these outcomes related to physical discomfort evolved in the observed populations over defined time intervals.

The findings describe patterns observed in the studies that included measured changes in walking capacity during the study period. However, certainty remains low due to the age of the primary trials. Evidence is limited for long-term outcomes, even though some of the studies had follow-up durations extending up to 12 months. Comparative evidence is lacking against several newer medications that are now widely studied for intermittent claudication.


Research on Microcirculatory and Cerebral Conditions

Bencyclane fumarate research examined outcomes related to systemic or functional imbalance, particularly focusing on disorders of cerebral performance in the aged population. This research involved Controlled, double-blind Phase III studies that utilized standardized cognitive and behavioral assessments.

Data are still emerging for this indication. The research foundation is based on older studies with modest sample sizes. Detailed information regarding long-term outcomes for cerebral conditions is not fully established, and the data for certain groups remain insufficient. This area contributes to understanding symptom patterns but research does not determine whether an individual will respond similarly.

Key Studies & References

  1. The long-term tolerability of bencyclane ('Fludilat') in patients with peripheral occlusive disease: a 48-week prospective double-blind controlled study versus placebo
  2. ATC/DDD Index: C04AX11 - bencyclane (WHO Collaborating Centre for Drug Statistics Methodology)
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Frequently Asked Questions (FAQ)

Common questions about Bencyclane fumarate (FAQ)

Q: Does Bencyclane fumarate affect blood pressure?

Official documents indicate that Bencyclane fumarate is described as a peripheral vasodilator, which acts by widening blood vessels. Consequently, low blood pressure, known as hypotension, is listed among the commonly reported effects in the product information.

Q: Is Bencyclane fumarate safe to use with heart medications?

Regulatory documentation advises caution when this medicine is described as being used alongside other heart treatments, such as antiarrhythmic agents or other vasodilators. The documentation describes the potential for additive effects on the heart or for a combined lowering of blood pressure.

Q: Can Bencyclane fumarate affect sleep or cause insomnia?

Nervous system disorders, including general fatigue and dizziness, are commonly reported in the official safety summaries. While insomnia is not consistently listed across all regulatory documents, official information reminds patients to be aware of the possibility of new or intensified central nervous system effects.

Q: Is Bencyclane fumarate excreted in breast milk?

Official prescribing information states that it is unknown whether the active substance passes into breast milk. Therefore, use of Bencyclane fumarate is officially not recommended for women who are breastfeeding.

Q: Are allergic reactions to Bencyclane fumarate common?

Official documentation lists a known hypersensitivity to the substance as an absolute contraindication. This means the regulatory profile states the medicine is prohibited for affected individuals. The risk of severe hypersensitivity reactions is also documented as a serious adverse event in the regulatory safety profile.

Q: Can Bencyclane fumarate cause anxiety or mood changes?

Serious adverse reactions documented in official sources include central nervous system effects such as psychotic episodes and convulsions. Official information highlights the importance of observing for any unusual changes in behavior or mood while the medication is being used.

Q: Is it common for doctors to adjust the dose of Bencyclane fumarate after starting it?

Official prescribing information indicates that dosage adjustments are a recognized part of the treatment protocol. These adjustments may be used as a means to help minimize common side effects as the body adapts to the medicine.

Q: What does 'use conditions' mean in relation to Bencyclane fumarate?

In the context of official documentation, 'use conditions' refers to the set of approved administrative rules for the medicine. This includes the accepted dose range, the approved frequency of administration, the route (e.g., oral or injection), and the specific timing instructions, such as taking the tablets with meals.

Q: Is Bencyclane fumarate known by any other name?

Bencyclane fumarate is the official International Non-proprietary Name (INN) for the active substance. The medicine has also been marketed under various brand names in different countries, such as Fludilat and Halidor.

Q: How quickly does Bencyclane fumarate start working?

The official product information details the medicine's pharmacokinetic properties. Studies have described the elimination half-life of Bencyclane as approximately 12 hours, which is a measurement related to how the body processes and clears the substance over time.

Q: Does taking Bencyclane fumarate affect my ability to drive?

Official documents state that caution is necessary regarding driving or operating heavy machinery. This warning is given, particularly during the beginning of treatment, due to potential nervous system side effects like dizziness and fatigue.

Q: What color are the Bencyclane fumarate tablets usually?

The regulatory product description for the oral tablet formulation typically describes them as white to off-white. They are also generally noted to be biconvex tablets.

Q: What should be done if too much Bencyclane fumarate is taken?

Official regulatory information states that taking too much of the medicine can lead to a dangerous situation. Symptoms may include agitation, confusion, or serious heart rhythm disturbances. Official information directs that immediate medical attention is necessary in this scenario.

Q: How long does the effect of one dose of Bencyclane fumarate last?

The official dosing instructions for oral tablets state that the total daily dose is administered in 2 or 3 separate administrations. This requirement for repeat dosing is what suggests the need to maintain the medicine's effect throughout a 24-hour period.

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How should Bencyclane fumarate be stored and disposed of?

How to Store and Dispose of Bencyclane Fumarate

The storage and disposal instructions for bencyclane fumarate are defined by official regulatory documentation to maintain product stability and ensure proper handling.

Storage Requirements

Condition Requirement
Temperature Must be stored below 25°C (or not above 30°C), depending on the specific formulation.
Protection Must be protected from moisture and light.
Container Keep the product in its original container and ensure it is stored out of the sight and reach of children.

Disposal

Unused or expired bencyclane fumarate must not be thrown into household waste or flushed down the toilet (wastewater). Disposal must strictly follow the local regulatory requirements for pharmaceutical waste to protect the environment.

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

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