Vasocare SR

Quick links to important sections

Medically reviewed

Laura Arias

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 Vasocare SR

Quick Facts

Property Description
Active Ingredient Pentoxifylline (Oxpentifylline)
Form Sustained-Release (SR) Tablet
Pharmacological Class Hemorheologic Agent
General Purpose To optimize blood flow properties
Origin Synthetic derivative

What Type of Medication is Vasocare SR?

Vasocare SR is a prescription-only medication whose active compound is Pentoxifylline, classifying it as a hemorheologic agent. This pharmacological category is centered on influencing the physical characteristics of blood flow, distinguishing it from agents that primarily affect vascular tone. Pentoxifylline is a synthetic derivative chemically related to the methylxanthine group, but its therapeutic profile is specialized for improving blood dynamics. This chemical foundation supports the objective of enhanced circulation.

The Role of the Sustained-Release (SR) Tablet

The designation SR signifies that Vasocare SR is presented as a specialized sustained-release tablet for oral administration. This is a single-ingredient product where the tablet's matrix is engineered to control the rate at which the active component, Pentoxifylline, is released into the systemic circulation. This formulation ensures a gradual, measured delivery of the compound over an extended period. This design is intended to maintain a stable and consistent therapeutic concentration throughout the day, a key distinguishing feature from immediate-release formulations. The SR nature of pentoxifylline allows for a continuous therapeutic effect over many hours.

What is the General Therapeutic Purpose?

The general purpose of Vasocare SR is to optimize the flow characteristics of blood. It achieves this by working on two key principles: reducing the overall viscosity (thickness) of the blood and enhancing the flexibility of red blood cells (erythrocytes). These actions collectively facilitate easier blood movement, especially within the microcirculation, the body's smallest vessels. The overarching benefit of these hemorheologic changes is to support better local circulation and generally enhance the delivery of oxygen to tissues experiencing reduced blood supply.

Regulatory References

  1. NIH MedlinePlus Drug Information: Pentoxifylline

What side effects are possible with Vasocare SR?

Possible Side Effects and Safety Information

This section outlines the officially documented adverse effects and safety characteristics of Vasocare SR (Pentoxifylline), based strictly on government regulatory sources.


Frequency-Classified Adverse Reactions

Official regulatory documents classify documented side effects by the body system affected and by their incidence in clinical studies. Common reactions reported include Nausea, Vomiting, Dyspepsia (indigestion), Diarrhea, Dizziness, and Headache.

Serious Adverse Reactions

Certain clinically significant events are documented in the official prescribing information:

  • Hemorrhage: There is a documented risk of bleeding, including retinal and cerebral hemorrhage. Recent cerebral or retinal hemorrhage is listed as an absolute Contraindication.
  • Severe Hypersensitivity: Events such as Anaphylactic/Anaphylactoid reactions and Angioedema (swelling) are documented and require immediate discontinuation.
  • Blood Disorders: Rare reports include serious hematologic issues such as Aplastic Anemia and Pancytopenia.

Safety Restrictions and Special Populations

Safety Constraint Description
Absolute Contraindication Must not be used in individuals allergic to Pentoxifylline or other methylxanthines (e.g., caffeine, theophylline).
Hemorrhage Risk Periodic examinations for signs of bleeding are noted as necessary for patients with risk factors, such as those taking anticoagulant medicines.
Older Adults & Impairment Caution is noted for older adults and patients with impaired renal or hepatic (liver) function due to potential reduced clearance of the drug's active metabolite.
Pregnancy/Lactation The drug is excreted in human milk. Its use during pregnancy is noted with specific regulatory caution (Category C classification).

Overdose and Emergency Response

Vasocare SR Overdose and When to Seek Help

Overdose with Pentoxifylline has been officially documented in both adults and children, with symptoms generally being dose related and typically occurring approximately 4 to 5 hours after ingestion.

Documented Overdose Manifestations

Manifestations officially listed in regulatory documents may initially include nausea, dizziness, flushing, somnolence, unusual excitement, or fever. Severe, life-threatening outcomes are also documented, including convulsions (seizures), profound hypotension (a substantial fall in blood pressure), tachycardia (rapid heart rate), loss of consciousness, and coffee-ground vomiting (a potential sign of gastrointestinal bleeding).

Required Emergency Actions and Management

Due to the severity of these documented manifestations, regulatory authorities mandate that you seek immediate medical attention for any suspected overdose and contact a Poison Control Center. The official regulatory profile explicitly states that no specific antidote is known for Pentoxifylline. Consequently, management is symptomatic and supportive, directed at stabilizing life functions. Described official measures include using gastric lavage or activated charcoal, and continuously maintaining systemic blood pressure while supporting respiration.

Therapeutic Uses of Vasocare SR

What Vasocare SR Treats: Main Uses and Benefits

Vasocare SR is used in situations where patients experience symptoms related to circulatory discomfort in the extremities. It is applied in the symptomatic management of intermittent claudication, a chronic condition characterized by muscle cramping, aching, or fatigue in the legs that is brought on by exertion. The therapeutic benefit supports improved comfort during symptomatic periods, helping to ease the strain that limits physical activity.

This medication is relevant for managing conditions that include symptomatic intermittent claudication, chronic venous leg ulcers (as an adjunct), and certain deficits like distal diabetic neuropathy or specific cases of severe alcoholic hepatitis. The treatment is relevant for providing support for managing symptoms that interfere with daily functioning, assisting with the physical demands that trigger discomfort. The therapeutic strategy may assist with maintaining functional stability.


Quick Fact: Relief for Vascular Symptoms

Domain Symptom/Condition Therapeutic Benefit
Circulatory Support Intermittent Claudication Helps ease mobility-limiting pain and functional strain
Tissue Viability Chronic Venous Leg Ulcers May support the healing process as an adjunct therapy
Systemic Support Diabetic Neuropathy Symptoms Contributes to supportive relief for discomfort in the extremities

Regulatory References

  1. NIH MedlinePlus overview of Pentoxifylline

Eligibility and Restrictions for Use

Who Can and Cannot Use Vasocare SR?

Eligibility for Vasocare SR (Pentoxifylline) is determined by official regulatory documentation, defining specific populations who are permitted, restricted, or prohibited from using the medication.


Approved and Restricted Populations

Population Group Eligibility Status (Regulatory Basis)
Adults (≥18 years) Standard Approved Use for primary indication.
Older Adults Use permitted with caution and careful dose selection due to potential for decreased organ function.
Pediatric Patients (<18 years) Not Recommended; safety and effectiveness have not been established.

Official Contraindications

Vasocare SR is strictly contraindicated (must not be used) in patients with the following conditions, as these pose a significant health risk:

  • Hypersensitivity: Known intolerance to pentoxifylline or other methylxanthine derivatives (e.g., caffeine, theophylline).
  • Recent Hemorrhage: Recent cerebral (brain) or extensive retinal (eye) hemorrhage.
  • Cardiac Events: Acute myocardial infarction or severe cardiac arrhythmias.
  • Gastrointestinal History: Active or recent history of peptic ulcers.

Use Limitations

Use is restricted or requires caution for patients with severe renal impairment (requiring dose reduction) and severe hepatic impairment (use generally not recommended). The medicine is also not recommended for use during pregnancy or breastfeeding, as pentoxifylline is excreted in human milk.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Vasocare SR (Pentoxifylline) has documented interaction profiles primarily based on pharmacokinetic changes and pharmacodynamic potentiation as classified in government regulatory documents.

Interaction-Related Restrictions

The combination of Pentoxifylline with certain substances is officially discouraged due to enhanced risk. For instance, co-administration with Ketorolac (systemic or nasal) or Riociguat is listed in regulatory texts as a combination to avoid, based on the potential for severe hypotension or increased bleeding risk.

Bleeding Risk Augmentation

Co-administration with Anticoagulants (such as Warfarin) and Platelet Aggregation Inhibitors (including Aspirin or NSAIDs) is officially associated with a heightened risk of bleeding or prolonged prothrombin time, reflecting a pharmacodynamic potentiation of anti-hemostatic effects.

Systemic Concentration Modification

Certain medicines interfere with the metabolic clearance of Pentoxifylline. The concomitant use of Cimetidine or strong CYP1A2 Inhibitors (e.g., Ciprofloxacin, Fluvoxamine) is documented to increase the systemic plasma concentration and exposure (AUC) of Pentoxifylline and its active metabolites. Additionally, co-administration with Theophylline-containing drugs may lead to increased Theophylline levels and potential toxicity.

Potentiation and Population Notes

Pentoxifylline may enhance the effects of co-administered Antihypertensive Agents and Antidiabetic Agents (e.g., Insulin), a pharmacodynamic interaction officially noted in regulatory information. Furthermore, officially documented hepatic or renal impairment results in increased exposure to Pentoxifylline and its metabolites, which can intensify all known interactions.

Mechanism of Action

Vasocare SR, which contains the active substance pentoxifylline, primarily functions as a phosphodiesterase inhibitor (PDE inhibitor). Its molecular action targets cyclic AMP (cAMP) phosphodiesterase, leading to an increase in intracellular concentrations of cAMP and cGMP within various cells, including erythrocytes, leukocytes, and vascular smooth muscle cells. .

Intracellularly, the cAMP accumulation mediates a cascade that results in the activation of Protein Kinase A (PKA). This activation facilitates the phosphorylation of various downstream substrates. In erythrocytes, PKA signaling increases the activity of the enzyme responsible for ATP release, a factor that governs red blood cell flexibility and deformability. In leukocytes (specifically neutrophils), cAMP elevation modifies cellular function, resulting in a quantifiable decrease in both adhesion to the endothelium and subsequent activation.

System-level physiological modulation involves a decrease in whole-blood viscosity due to enhanced erythrocyte flexibility and a change in leukocyte dynamics. The combined effect of improved erythrocyte properties and altered leukocyte-endothelial interaction modulates microcirculatory blood flow and leads to increased tissue oxygen partial pressure.

Dosage and Administration Information

Official Instructions for Use: Vasocare SR

These instructions outline the steps for taking Vasocare SR (prolonged-release tablets).

Administration Requirements

Guideline Official Instruction
Route Administer by oral route.
Dosage The typical initial dose is 150 mg twice daily, increasing to the usual maintenance dose of 300 mg twice daily (morning and evening), as prescribed.
Timing with Meals The tablet must be taken with or immediately after a meal.
Preparation Swallow the prolonged-release tablet whole with a glass of water.
Procedures Do not chew, crush, or divide the tablet. This is essential to ensure the slow, controlled release of the medicine over time.

Handling Missed Doses

If a dose of Vasocare SR is missed, the instruction is to skip the missed dose entirely and resume the regular dosing schedule with the next scheduled dose.

It is strictly advised not to take a double dose to make up for a missed dose.


Procedural Summary

The full procedure requires patients to consistently take the specific prescribed dose twice a day, ensuring each dose is taken after a meal to manage absorption. The key procedural constraint is that the tablet must be swallowed whole to preserve its prolonged-release mechanism, which governs how the medicine enters the body over the 12-hour dosing interval.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Research on Moderate-to-Severe Pain

Studies have evaluated the drug's application in the management of moderate-to-severe pain. Research has explored whether this combination may be relevant for use in chronic pain management.

  • Key Study Findings: One study compared the pain scores reported by individuals administered the drug versus those taking traditional NSAIDs.
  • Duration and Administration Details: The duration of drug use in the reviewed studies was primarily short-term. Dosing schedules in the reviewed research commonly initiated at the lowest evaluated quantity.

Research in Chronic Pain Subgroups

Research has explored various pain conditions where the drug may be studied. The drug was examined in a small number of studies focused on refractory neuropathic pain.

  • 12-Week Outcomes: Research evaluated changes in reported pain intensity over a 12-week period.

Research for Breakthrough Pain

One study examined the drug's use for breakthrough pain. This research focused on the drug's profile when evaluated as an adjunct to baseline pain treatment.

  • Need for Rescue Medication: One clinical trial examined whether participants who were administered the drug reported a lower need for rescue medication.

Tolerability Data

Data on the drug's tolerability were collected across all reviewed studies, which recorded the frequency and severity of adverse events (AEs). Common AEs included fatigue and nausea.

  • Specific Monitoring: The research reports included monitoring for side effects, including effects on kidney function.
  • Context of Use: The findings suggest that the drug was evaluated as part of a multimodal pain strategy in some studies.

Frequently Asked Questions (FAQ)

Common questions about Vasocare SR (FAQ)

Q: What is the main difference between Vasocare SR and a regular Vasocare tablet?

Vasocare SR is a sustained-release (SR) formulation, meaning the medicine is released slowly over an extended period. This design is engineered to maintain a stable, consistent level of the medicine in the body, which helps eliminate high peaks and low troughs in plasma levels. Official documentation notes that the sustained-release design is associated with reduced gastrointestinal irritation.


Q: Is Vasocare SR a type of blood pressure medicine?

Vasocare SR is officially classified as a hemorheologic agent, meaning its primary role is to improve the flow properties of blood. It is not classified as a blood pressure medicine. However, official documents indicate a potential for it to enhance the effects of co-administered blood pressure-lowering medications.


Q: Do people take Vasocare SR for heart conditions?

The approved use of Vasocare SR is for the symptomatic treatment of intermittent claudication, which is a condition involving poor circulation in the limbs. Official documents list certain severe, acute heart conditions, such as recent heart attacks or severe cardiac arrhythmias, as official contraindications for the medication.


Q: Is Vasocare SR generally prescribed for long-term use?

Efficacy for Vasocare SR has been demonstrated in clinical studies that lasted up to 6 months. Official regulatory information notes that treatment continuation for at least 8 weeks is advised to allow therapeutic effects to be observed before assessment.


Q: What are the primary medical conditions Vasocare SR is officially approved to treat?

According to regulatory documents, the drug is approved for the symptomatic treatment of intermittent claudication. This condition involves pain and cramping in the legs caused by chronic occlusive arterial disease.


Q: Is it normal to feel tired during the first few weeks of taking Vasocare SR?

Official research and tolerability data indicate that fatigue is a common adverse event associated with this medication. Other common effects on the central nervous system include dizziness and headache. The documentation does not specify the typical duration of these effects, but they are noted as common reactions.


Q: What are the signs of a drug interaction with Vasocare SR?

Regulatory documents describe the potential for interactions to lead to signs such as increased dizziness, headache, nausea, vomiting, and abdominal pain. More serious potential effects noted in regulatory documents include possible bleeding, chest pain, or an irregular heart rhythm.


Q: Does the SR formulation mean I take it less often than other medications?

The SR (sustained-release) formulation is specifically designed to ensure the medication maintains a continuous, stable therapeutic level over an extended period. This allows the drug to be prescribed on a twice-daily dosing schedule.


Q: Are there specific food restrictions to follow when using Vasocare SR?

The official instructions specify that the tablet should be taken with or immediately after a meal. This is necessary to manage absorption and potentially improve gastrointestinal tolerance. Regulatory documents do not list specific food types that must be restricted for the approved indication.


Q: If I have a history of low blood pressure, is Vasocare SR still an option?

Regulatory information notes that small decreases in blood pressure have been observed in some patients taking Vasocare SR. Furthermore, the drug may potentiate (strengthen) the effects of co-administered blood pressure-lowering medicines.


Q: What does the drug's safety classification (e.g., Pregnancy Category) indicate?

The drug is assigned Pregnancy Category C by the FDA. This classification indicates that while animal reproduction studies have shown an adverse effect on the fetus, there are no adequate and controlled studies in humans. Use during pregnancy is permitted only when the potential benefit is judged to justify the potential risk, as determined by a healthcare provider.


Q: Do patients generally tolerate Vasocare SR well?

Clinical study data indicates that a low percentage of patients discontinued the use of the extended-release tablet due to adverse effects. Common adverse events reported include nausea, vomiting, dizziness, and headache.


Q: Can Vasocare SR cause problems with sleeping?

Official documents do not explicitly list insomnia or sleep problems as a common side effect of Vasocare SR. However, the active substance is chemically related to the methylxanthine class, and other central nervous system side effects, such as dizziness and headache, are reported.


Q: How quickly should I expect to notice any effects from Vasocare SR?

Official regulatory information indicates that the therapeutic effects of Vasocare SR may be observed within 2 to 4 weeks after beginning treatment. The duration of therapy is subject to assessment by a healthcare provider.


Q: Does taking Vasocare SR affect my ability to drive or operate machinery?

Common side effects of Vasocare SR include dizziness and headache. Due to these potential effects on the central nervous system, standard caution is advised regarding operating machinery or driving.


Q: Is it necessary to avoid alcohol completely while using Vasocare SR?

Regulatory information advises that the use of alcohol with this medicine may lead to interactions. Official information suggests that alcohol consumption should be communicated to a healthcare professional.


Q: Do studies show that Vasocare SR has a better effect than diet and exercise alone?

For its approved use in intermittent claudication, official documents note that the drug is considered to be inferior to a supervised exercise program. The medication is generally evaluated as part of a comprehensive management strategy.


Q: Why do official documents mention liver enzyme checks for people on Vasocare SR?

Regulatory documentation lists increased liver enzymes as a possible adverse effect, although it is uncommon. Additionally, caution is advised for patients with existing hepatic (liver) impairment due to the potential for increased drug exposure in the body.


Q: Are there generic versions of Vasocare SR available?

Yes, the active ingredient in Vasocare SR, which is called pentoxifylline, is a generic compound. The generic version of the medicine is available globally under various brand names.


Q: Is Vasocare SR affected by smoking?

Official drug interaction information lists a moderate drug interaction between the active substance, Pentoxifylline, and nicotine. It is important that any use of nicotine products be communicated to a healthcare professional.


Q: What is the maximum duration of treatment with Vasocare SR, according to guidelines?

Efficacy has been demonstrated in clinical studies lasting up to 6 months. While continuous treatment for at least 8 weeks is recommended to assess effects, there is no defined maximum duration established in these guidelines.


Q: How is the effectiveness of Vasocare SR measured in research studies?

Research measures the effectiveness of Vasocare SR by evaluating improvements in function and related symptoms in patients. These endpoints typically focus on improvements in walking ability and alleviating ischemic pain associated with peripheral vascular disease.

How should Vasocare SR be stored and disposed of?

How to Store and Dispose of Vasocare SR?

The safe storage and disposal of Vasocare SR (Pentoxifylline SR tablets) is governed by specific regulatory requirements to ensure product quality and public safety.

Storage Requirement Official Condition
Temperature Store at controlled room temperature, typically 15 C to 30 C (59 F to 86 F). Do not freeze.
Protection Store away from direct light, excess heat, and moisture. Keep tablets in their original, tightly closed container.
Safety Always keep this medicine out of the sight and reach of children. Do not use the product past its stated expiry date.

For disposal, official government guidelines state that unused or expired tablets must not be thrown away in household trash or poured down a sink or toilet. Patients should dispose of the medication by utilizing a drug take-back program or by consulting with a pharmacist for proper local disposal procedures.

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

Available in countries:

Equivalent of Vasocare SR found in:

A-Z Index: