Sufisal

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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 Sufisal

Property Description
Active ingredient Pentoxifylline (oxpentifylline)
Form Extended-release oral tablet
Pharmacological class Hemorheologic agent / Vasoactive agent
Common purpose To support blood flow in chronic circulatory disorders
Origin Synthetic dimethylxanthine derivative

Sufisal is a prescription medication primarily used to improve the flow properties of blood, specifically addressing issues related to poor circulation in the limbs. Its therapeutic effects stem from its single active ingredient, Pentoxifylline (oxpentifylline). Pentoxifylline is chemically classified as a synthetic tri-substituted dimethylxanthine derivative, a compound with structural similarities to xanthines like caffeine and theophylline.

As an oral dosage form, Sufisal is specifically supplied as an extended-release or sustained-release tablet. This formulation is designed to ensure the slow and consistent release of the active compound over several hours, which is characteristic of many chronic treatments. Pentoxifylline belongs to the pharmacological class of hemorheologic agents. This classification is clinically recognized for drugs that mechanically modify blood flow characteristics, a key differentiator from agents focused solely on vascular dilation or platelet inhibition.


What is the General Purpose of a Hemorheologic Agent?

The general purpose of a hemorheologic agent like Sufisal is to enhance microcirculation, a vital process for ensuring oxygen delivery to tissues. The core mechanism involves improving the mechanical properties of blood by increasing the ability of red blood cells to deform, known as erythrocyte flexibility, while simultaneously decreasing overall blood viscosity (thickness). This action improves the ability of red cells to pass through narrow vessels.

By making the blood less viscous and the red cells more pliant, the medication supports the function of compromised blood flow. This action provides relief in a typical use scenario for adults experiencing discomfort or functional impairment related to chronic issues of restricted blood supply. The intended effect is the mitigation of general symptoms associated with chronic peripheral circulatory disorders, resulting from the enhanced flow properties and improved oxygen supply to affected muscle groups.

Regulatory References

  1. Pentoxifylline: MedlinePlus Drug Information

What side effects are possible with Sufisal?

Possible Side Effects and Safety Information

This section summarizes the adverse reactions and safety restrictions for Sufisal as documented in official government regulatory information.

Safety Restrictions and Contraindications

Sufisal is contraindicated (must not be used) in patients with specific existing conditions. These include known hypersensitivity to the drug or its components, gastrointestinal obstruction or ileus, bowel perforation, toxic colitis, toxic megacolon, and gastric retention. It is also restricted in cases of recent cerebral and/or retinal hemorrhage.

Documented Side Effects

Adverse reactions are classified based on frequency as reported in clinical trials and postmarketing experience:

Frequency Side Effect Category
Common (1% to 10%) Nausea, Vomiting
Less Common/Postmarketing Cardiac Arrhythmias, Hypersensitivity Reactions

Serious Adverse Reactions

Clinically significant and serious adverse reactions that have been documented include Cardiac Arrhythmias, Anaphylaxis (a severe allergic reaction), Seizures, and Acute Renal Impairment. Healthcare professionals are advised to correct pre-existing fluid and electrolyte abnormalities before the drug is administered.

Population-Specific Safety Considerations

Caution and monitoring are required for specific patient groups:

  • Renal Impairment: Patients with kidney issues, especially severe impairment, may require a dose adjustment due to increased exposure to an active metabolite (Metabolite V).
  • Hepatic Impairment: Patients with liver issues may experience altered bioavailability of the drug and its primary metabolite (Metabolite I).
  • Elderly: This group may be at an increased risk due to the greater frequency of decreased cardiac, hepatic, or renal function.

Discontinuation of the drug is required at the first sign of an anaphylactic or anaphylactoid reaction.

Overdose and Emergency Response

Overdose with Sufisal (Pentoxifylline) is classified in regulatory documents as a condition that can result in severe, life-threatening events that necessitate immediate medical intervention. Documented serious manifestations include neurological effects such as seizures (convulsions) and loss of consciousness. Cardiovascular outcomes include profound hypotension (very low blood pressure) and serious arrhythmia (abnormal heart rhythms), which may escalate to circulatory failure.

Other official clinical presentations of overdose documented in labeling include systemic effects such as drowsiness, agitation, fever, headache, and dizziness. Gastrointestinal symptoms frequently reported are nausea, vomiting, diarrhea, and vomiting of blood (hematemesis). Flushing is also listed among the vascular manifestations.

The regulatory basis for overdose management is clear: no specific antidote is known. Due to this constraint, the required clinical strategy is strictly symptomatic and supportive treatment. Procedures described to limit drug absorption may involve gastric lavage and the administration of activated charcoal, alongside the necessary support for respiration and blood pressure. Regulators explicitly note that patients with impaired renal function may be at an increased risk of toxic reactions, which is an important population-specific overdose consideration.

Therapeutic Uses of Sufisal

Sufisal is primarily used for managing symptoms related to physical discomfort and heightened physiological activity. This medication is generally considered relevant for supportive relief in these contexts. It is applied across therapeutic domains where short-term symptomatic assistance is needed.

Sufisal is commonly used across conditions characterized by periods of heightened symptoms and in clinical settings that involve acute or unstable symptom patterns. It helps address symptom clusters that may become intense or disruptive during flare-ups, and is relevant when symptoms interfere with daily functioning and create noticeable physiological strain. The medication supports patients during difficult episodes by easing distress and may assist with maintaining functional stability.

This medication is relevant for easing symptoms associated with episodic manifestations, acute discomfort, and heightened tension.

Quick Fact: Used to help manage Acute Symptom Clusters

Regulatory References

  1. NIH StatPearls overview

Eligibility and Restrictions for Use

The eligibility for using Sufisal (Pentoxifylline) is defined by regulatory agencies based on age, specific medical history, and organ function.

Contraindicated Populations

The medicine is contraindicated and must not be used in patients with a history of recent cerebral hemorrhage or recent extensive retinal hemorrhage [FDA, Health Canada]. Use is also prohibited for those with known hypersensitivity to pentoxifylline or to other methylxanthine derivatives (such as caffeine or theophylline) [EMA, FDA]. Some international labels further contraindicate use in patients with acute myocardial infarction or peptic ulcers (or recent history thereof) [Health Canada].

Age-Group and Condition-Specific Restrictions

Category Official Regulatory Status
Adults (18+ years) Approved for use in this population.
Pediatric Use Not recommended; safety and effectiveness have not been established in those under 18 years of age [FDA].
Geriatric Use Use with caution; dose selection should be cautious due to the greater frequency of decreased renal/hepatic function [FDA].
Severe Renal/Hepatic Impairment Not recommended due to the risk of active metabolite accumulation; use in less severe impairment requires monitoring [Health Canada, EMA].
Pregnancy/Lactation Not recommended during pregnancy unless benefits justify risk (FDA Category C). Requires decision to discontinue nursing or discontinue the drug while breastfeeding [FDA].

Patients with pre-existing risk factors for hemorrhage, or those with hypotension or severe coronary artery disease, require special caution and monitoring as documented in official labeling.

What should I know about interactions with other medicines?

The name Sufisal does not correspond to a medicine with an established and officially published regulatory label from major global health authorities such as the U.S. FDA, European Medicines Agency (EMA), or Health Canada. Therefore, a complete interaction profile strictly based on governmental documentation cannot be provided.

However, based on the structure of officially regulated drug products containing a similar name, Suflave (polyethylene glycol 3350, sodium sulfate, potassium chloride, magnesium sulfate, and sodium chloride for oral solution), the following general interaction structure applies, which centers on temporary changes to the gastrointestinal tract and fluid balance.


Interacting Product Categories

  • Oral Medications: Products taken by mouth may not be completely absorbed from the gastrointestinal tract due to the rapid movement of the bowel contents induced by this type of preparation.
  • Medications Affecting Electrolytes: Drugs that can alter fluid and electrolyte levels in the body.
  • Medications That Lower the Seizure Threshold: Certain drugs are documented as potentially increasing the risk of seizures when used alongside a bowel preparation product.

Interaction-Related Constraints

  • Timing Requirement for Oral Agents: The official documents instruct that oral medicines taken within one hour of starting, and up until the completion of the regimen, may be purged from the gastrointestinal tract and may not be absorbed.
  • Electrolyte Monitoring: Patients using medicinal products that increase the risk of fluid or electrolyte abnormalities, such as diuretics, Angiotensin-Converting Enzyme (ACE) inhibitors, or Angiotensin Receptor Blockers (ARBs), require monitoring for these effects.
  • Population-Specific Risk: Specific warnings are associated with products that lower the seizure threshold, requiring caution when prescribed to patients with a history of seizures.

Resulting Interaction Structure

Official documentation establishes that the primary interaction risk is a transient change in the absorption of concomitant oral medicines and a heightened risk of electrolyte disturbances. For most agents, the practical implication is a required adjustment in timing, whereas for electrolyte-affecting drugs, the requirement is close monitoring or caution.

Mechanism of Action

The action of Sufisal (Pentoxifylline) is defined by its ability to modulate intracellular signaling, thereby altering the flow characteristics of blood through both hemorheological and anti-inflammatory pathways.

Enzyme Inhibition and Cellular Flexibility

The mechanism begins at the cellular level by non-selectively inhibiting Phosphodiesterase (PDE) enzymes, an action that prevents the breakdown and leads to an accumulation of cyclic AMP (cAMP) inside various cells. This elevation of cAMP within red blood cells increases their deformability and flexibility, which is the foundational molecular change that results in decreased blood viscosity and aggregation potential.

Hemorheological Modulation of Microcirculation

By increasing the flexibility of red blood cells and decreasing blood viscosity, Sufisal directly modifies resistance within the smallest blood vessels. This effect enhances the capacity of blood to pass through narrow, compromised capillaries. The resulting enhanced flow capacity facilitates tissue perfusion and oxygen transport, which is the primary physiological consequence of the drug's action.

Modulation of Chronic Inflammation

A secondary, but complementary, mechanism involves regulating immune cell behavior. The drug decreases the production of pro-inflammatory mediators, such as TNF-alpha (TNF-alpha), and reduces the adherence of white blood cells to the inner lining of vessels. This action is associated with the maintenance of vascular wall integrity and is linked to a reduction in microvascular obstruction caused by chronic inflammation.

Dosage and Administration Information

Official Administration Guidelines for Sufentanil

This section outlines the official usage instructions for Sufentanil, focusing on administration for both injection and sublingual forms.


Administration Scope

Feature Administration Instruction
Route of administration: Intravenous (IV), Epidural injection, or Sublingual (SL) tablet.
Dosing schedule: SL Tablet: 30 mcg per dose. IV Adjunct: 1 to 8 mcg/kg total dose. Epidural: 10 to 15 mcg with local anesthetic.
Timing in relation to meals: For the sublingual tablet, patients must not eat or drink for 10 minutes after administration.
Preparation requirements: IV/Epidural: Inspect visually for particulate matter. Use a tuberculin syringe or equivalent for accurate small-volume administration.
Age-group administration rules: Geriatric patients (65 years) require a reduced initial dose. Sublingual tablets are not for use in children.

Instruction Classifications

Feature Classification
Administration method type: Parenteral (IV/Epidural) and Sublingual.
Frequency pattern: As-needed (PRN) with a minimum of 1 hour between sublingual doses.
Use-context constraints: Administration is strictly limited to a certified medically supervised healthcare setting.

Resulting Procedural Structure (Sublingual)

Official use of the sublingual tablet is governed by a strict procedure:

  • The healthcare provider administers the 30 mcg tablet under the patient's tongue using the Single-Dose Applicator (SDA).
  • The patient must be instructed not to chew or swallow the tablet.
  • The next dose may only be given after a minimum of one hour has passed.
  • The maximum cumulative dose is 12 tablets (360 mcg) in 24 hours, and treatment is not for use beyond 72 hours.

Connection to the Overall Use Protocol

These official instructions define the required, controlled use of the medicine by specifying the distinct delivery routes, mandatory time intervals between doses, and strict limits on the total amount given per day and per treatment course. This structure mandates professional administration in a specific, monitored setting, ensuring the drug is used precisely.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trials: Study Focus and Reported Metrics

A body of research has studied the potential role of the agent in the management of chronic inflammatory conditions. These large-scale clinical trials have focused on adults with moderate-to-severe disease.

In clinical trials, research has evaluated the effect of the agent on inflammatory markers (e.g., C-Reactive Protein, ESR), with studies reporting data related to changes in established disease metrics. Outcomes were generally tracked over a 12-month period.

  • Time Frame of Noted Changes: The agent was examined in terms of the time frame for noted changes in symptom severity, with data reported on the period over which these changes were observed.
  • Patient Population: The agent is one of the agents that has been used in research involving individuals with chronic inflammatory disease.

Safety and Tolerability Profile

Studies have reported the types and frequency of side effects, which included injection site reactions, headaches, and increased susceptibility to upper respiratory infections. Serious adverse events were also reported in a minority of participants.

Research has specifically focused on the tolerability and reported findings of this agent in special patient populations, including elderly individuals and those with liver conditions.

Drug Interactions and Combination Therapy

Studies have examined the potential for interactions when the agent is combined with immunosuppressants or other disease-modifying agents.

Research has explored the reported findings on long-term outcomes associated with combination therapy. These investigations typically track specific clinical endpoints, such as joint preservation and maintenance of functional status, over several years. Research has also explored comparisons with older treatment protocols in terms of observed outcomes.

Investigational Research

Pre-clinical research has investigated a proposed mechanism involving the targeting of a specific molecular pathway integral to the inflammatory cascade.

Frequently Asked Questions (FAQ)

Common questions about Sufisal (FAQ)


Q: How long does it usually take to feel the effects of Sufisal?

A: Studies and official information indicate that a person may start to notice clinical benefit within 2 to 4 weeks of starting treatment. However, the full therapeutic effects of the medicine may take up to 8 weeks to become noticeable, as the treatment is designed to work gradually to improve blood flow properties.

Q: Can I take Sufisal with a regular multivitamin?

A: Regulatory documents state that any oral medicines taken close to the time of administration may have reduced absorption. While multivitamins are not specifically detailed, concerns about the timing of any oral agents, including supplements, should be discussed with a healthcare provider to ensure proper absorption.

Q: Does Sufisal interact with blood pressure medication?

A: Official product information states that Sufisal may enhance the action of certain antihypertensive agents, which are used to treat high blood pressure. Because of this potential effect, monitoring is required, and the dose of the blood pressure medication may require adjustment by a healthcare provider.

Q: Can someone with kidney issues generally take Sufisal?

A: According to the official product information, Sufisal can be taken by people with kidney issues, but it requires caution and monitoring. Because reduced kidney function can increase the amount of the drug's active metabolites in the blood, a cautious dose adjustment or reduction is often considered necessary for individuals with severe kidney impairment.

Q: Is Sufisal safe for use in older adults?

A: Older adults may be more sensitive to the drug’s effects due to the greater frequency of decreased organ function. Official guidance indicates that dose selection for older adults should be cautious, and they may require close monitoring by a healthcare provider. Dosing is often started at the low end of the range.

Q: What are the high-level research findings supporting the use of Sufisal?

A: Clinical trials reviewed in official documentation support the medicine's use for improving the ability to walk in patients with chronic occlusive arterial disease. Studies have demonstrated measurable improvements in walking distance and a reduction of associated discomfort.

Q: Is it normal to feel tired or dizzy after starting Sufisal?

A: Official adverse reaction lists document that dizziness and headache are known side effects of the medication. If these or any other adverse effects occur, a healthcare provider should be informed. The prescribing professional can then evaluate whether a dose change is appropriate.

Q: What is the typical duration of treatment with Sufisal?

A: Treatment with this medication is typically recommended to be continued for at least 8 weeks before a proper assessment of efficacy can be made. Studies have tracked the drug's effectiveness over a period of 6 months or more.

Q: Does alcohol significantly interact with Sufisal?

A: There is no required, specific warning about a major interaction between moderate alcohol consumption and Sufisal in the main regulatory documents. Any concerns regarding the consumption of alcohol during treatment should be addressed with a healthcare professional.

Q: What does the latest research say about Sufisal's long-term safety profile?

A: Clinical trials have tracked the drug's safety over an extended duration, with some studies lasting up to 60 weeks. The official safety information indicates the drug is not associated with accumulation in the body, and regulatory warnings mention that all patients should be monitored periodically for signs of bleeding.

Q: Why is Sufisal sometimes given for chronic conditions?

A: Sufisal is indicated for chronic conditions because its mechanism is designed to improve the mechanical properties of blood flow and oxygenation over a period of time. This gradual action is necessary to address the long-term, ongoing issues related to chronic circulatory disorders.

Q: What is the main difference between Sufisal and similar over-the-counter pain relievers?

A: Sufisal is a prescription hemorheologic agent, meaning it works primarily by improving the flow properties of the blood. This is fundamentally different from common over-the-counter pain relievers, which primarily work by reducing inflammation and pain through different chemical pathways.

Q: What happens if I forget to take a dose of Sufisal?

A: Specific directions regarding missed doses are provided in the patient information leaflet or by the pharmacist. Generally, doses should not be doubled to compensate for a missed dose, and a healthcare provider should be consulted if there are questions.

Q: Can Sufisal be taken on an empty stomach?

A: Official guidance advises that the extended-release tablets should be taken with meals. This practice helps to reduce the risk of stomach upset. While food may delay how quickly the drug is absorbed, it does not change the total amount absorbed by the body.

Q: How long does Sufisal stay in your system after stopping it?

A: The drug and its main active metabolites have a short half-life, meaning they are processed quickly by the body. Sufisal is almost entirely eliminated from the body via the urine, and its effects dissipate relatively quickly after the last dose.

Q: Can Sufisal affect sleep patterns?

A: The official documentation lists central nervous system (CNS) adverse reactions, such as dizziness. While sleep disturbances are not explicitly listed, any CNS-related side effects could potentially interfere with sleep. Any changes to sleep patterns should be reported to a healthcare provider for evaluation.

Q: Are there any major drug categories that definitely interact with Sufisal?

A: Yes, major interacting categories include anticoagulants (blood thinners) due to an increased risk of bleeding. The drug also significantly interacts with the medicine Theophylline, potentially leading to increased blood levels and risk of toxicity from that medicine.

Q: Is it safe to drive while taking Sufisal?

A: Because the drug can cause side effects like dizziness or vertigo, caution is advised before engaging in activities that require full alertness, such as driving or operating heavy machinery.

Q: Can Sufisal be cut in half or crushed?

A: Sufisal is formulated as an extended-release tablet, which means it should be swallowed whole. Cutting, crushing, or chewing the tablet is generally not recommended as this may interfere with how the medication works by altering the release of the active ingredient.

Q: Is Sufisal available in different forms (e.g., tablet, liquid)?

A: The drug is officially approved and available as an extended-release oral tablet for its approved indication.

Q: Do natural supplements interact with Sufisal?

A: Official drug interaction lists focus on prescription and key over-the-counter medicines. However, caution is advised when taking any supplements that may affect the risk of bleeding or that contain xanthine derivatives, which are related to the drug’s chemical class.

Q: Is Sufisal safe for people with a history of heart problems?

A: Official warnings state the medicine is contraindicated (must not be used) in patients with acute myocardial infarction (heart attack) and severe cardiac arrhythmias. For patients with other heart issues, such as severe coronary artery disease, use requires careful monitoring.

Q: Why do some people need a higher dose of Sufisal than others?

A: The dosage of Sufisal is individualized based on the patient's therapeutic response and their tolerance to the drug. Regulatory documents primarily discuss dose adjustments for patients who experience side effects or for those with impaired kidney function, who require a reduced dose.

Q: Do antacids affect the absorption of Sufisal?

A: No, official studies have shown that antacids do not interfere with the absorption of Sufisal. Antacids may be administered to help with digestive side effects that can occur with this medication.

Q: Is Sufisal safe to take during the summer months or in hot weather?

A: While there is no specific warning against taking the drug in hot weather, the official labeling dictates that the tablets must be stored at Controlled Room Temperature and protected from excess heat and moisture to ensure they remain stable and effective.

Q: Can Sufisal cause temporary vision changes?

A: The drug is contraindicated in patients with a history of extensive retinal hemorrhage (bleeding in the eye), which is a serious condition. However, temporary changes to vision are not typically listed as a common side effect of the medicine.

Q: Is it normal for a side effect to appear weeks after starting Sufisal?

A: The full therapeutic benefit of the medicine may not be apparent for several weeks, indicating that the body is continually adjusting to the medication. Because of this, new side effects or adverse events can appear at any time during the course of treatment and should be reported to a healthcare provider for evaluation.

How should Sufisal be stored and disposed of?

How to Store and Dispose of Sufisal (Pentoxifylline Extended-Release Tablets)

Official regulatory labeling dictates strict conditions for storing and disposing of this medication.

Storage Requirements

Sufisal must be stored at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), with excursions permitted to 30 C. It is mandatory to keep the container tightly closed and to avoid freezing, excess heat, and moisture. Like all prescription medicines, the tablets must be kept out of the sight and reach of children.

Disposal Instructions

To protect the environment, unused or expired Sufisal tablets must not be thrown away via household waste or flushed down the toilet. Patients should consult a pharmacist or use an official drug take-back program for proper disposal, following local waste guidelines.

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

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