Throne

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Medically reviewed

Rosario Oropesa

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 Throne

Property Description
Active Ingredient Pentoxifylline
Form Extended-release oral tablet
Pharmacological Class Hemorheologic agent
Origin Synthetic methylxanthine derivative
General Purpose To improve blood circulation

Throne is a prescription-only medication whose active ingredient is Pentoxifylline, a compound used to improve blood flow, belonging to the group of hemorheologic agents. It is chemically categorized as a synthetic methylxanthine derivative, structurally related to compounds like caffeine, but specifically engineered to affect the physical flow properties of blood. The medication is a single-ingredient product intended for oral administration.


What Type of Medicine is Throne (Pentoxifylline)?

Throne's active ingredient, Pentoxifylline, classifies it as a hemorheologic agent, a term for medications that enhance the fluidity of blood. It is delivered in the form of an extended-release oral tablet, designed to release the drug slowly over time to ensure stable systemic effects. This consistent delivery is important for managing conditions requiring continuous support for blood flow.

Pentoxifylline has a unique mechanism where its primary effect is on the rheological properties of blood, specifically reducing blood viscosity and improving red blood cell flexibility. This supports the general understanding that the medicine primarily works by making the blood less "sticky" and easier to circulate.


How Does a Hemorheologic Agent Generally Help Circulation?

A hemorheologic agent generally helps circulation by making the blood less viscous and the red blood cells more flexible, which promotes improved blood flow through tiny vessels. The mechanism focuses on increasing the deformability of red blood cells (RBCs), enabling them to squeeze through constricted capillaries more effectively, and decreasing the overall stickiness of the blood. The fundamental purpose of this physiological action is to enhance the delivery of oxygen and essential nutrients to muscle and tissue that are receiving an insufficient blood supply due to restricted flow, thereby supporting better circulatory health.

Regulatory References

  1. Pentoxifylline - StatPearls - NCBI Bookshelf

What side effects are possible with Throne?

Possible side effects and safety information

Adverse Reaction Summary

Official regulatory information for a drug named Throne is not available in the public domains of major health authorities, such as the U.S. Food and Drug Administration (FDA) or the European Medicines Agency (EMA). Therefore, a comprehensive, officially documented list of adverse reactions and their precise frequency classifications is currently unavailable.

In general, all approved medications are associated with known side effects that are categorized based on their frequency in clinical trials, such as 'Very Common' (affecting more than 1 in 10 people) to 'Rare' (affecting less than 1 in 1,000 people). These effects are typically grouped by the affected body system or organ, referred to as System-Organ Classes (SOCs).

Safety and Population Considerations

Clinically significant or Serious Adverse Reactions for any drug are defined as those that are life-threatening, result in hospitalization, or cause permanent disability, and these must be detailed in all regulatory labeling. For Throne, these specific documented serious events are not established in official governmental records.

Regulatory documents also define Population-Specific Safety Considerations, which outline risks for groups like pediatric or geriatric patients, or those with underlying conditions like renal or hepatic impairment. Furthermore, any explicit Safety-Related Restrictions or Limitations, such as contraindications (situations where the drug must not be used) or requirements for specific monitoring (e.g., blood pressure checks or laboratory tests), would be explicitly noted in the regulatory label. These details for Throne are not found in the official public safety databases.

Safety Profile High-Level Notes

The regulatory safety profile of a medicine provides the basis for understanding the risk structure. This structure typically includes a definition of the regulatory frequency framework used (e.g., ICH guidelines) and the governing regulatory authority (FDA, EMA, etc.). The lack of an official safety summary prevents a definitive connection to the overall understanding of risks for Throne based strictly on regulatory documents.

Overdose and Emergency Response

Overdose Manifestations and Emergency Action

Official regulatory documents classify overdose with Throne (Pentoxifylline) as a situation that may lead to severe or potentially fatal outcomes and requires immediate medical attention.

Documented Overdose Presentations

System Officially Documented Signs/Symptoms
Central Nervous System Drowsiness (somnolence), excitation/agitation, convulsions (seizures), loss of consciousness.
Cardiovascular/Systemic Flushing, fever (hyperthermia), severe hypotension, tachycardia.
Gastrointestinal Vomiting, including coffee-ground emesis (a sign of potential hemorrhage).

Severe Outcomes and Emergency Guidance

  • Life-Threatening Risks: Massive acute overdose is associated with severe hypotension and potentially fatal gastrointestinal hemorrhage.
  • Immediate Action Required: Seek immediate medical attention or contact a Poison Control Center right away. Official guidance mandates transfer to a hospital for general and specific intensive medical surveillance.
  • Antidote Status: Treatment is exclusively symptomatic and supportive, as no specific antidote is known or documented in regulatory labeling.
  • Procedural Measures: Official instructions for management include procedures such as gastric lavage and the administration of activated charcoal to limit absorption. Managing severe hypotension may require volume expanders and/or vasopressors.

Therapeutic Uses of Throne

The medication is commonly used to help manage symptoms related to physical discomfort in conditions affecting blood flow. This is commonly used across therapeutic domains where symptomatic support is needed.


Restoring Functional Mobility in Peripheral Arterial Disease

Throne is commonly used to help with the symptomatic management of chronic occlusive arterial disease (COAD), specifically addressing intermittent claudication. This is a pattern of symptoms that interfere with daily functioning, such as pain, cramping, and fatigue in the leg muscles, which occurs consistently upon walking. The therapeutic benefit centers on providing support that helps ease the overall symptom burden and provides supportive relief when symptoms interfere with routine activities. It contributes to easing the overall symptom load, which may help patients cope more steadily with symptom fluctuations during walking. The medication is relevant for easing challenging symptoms associated with several conditions, including intermittent claudication, trophic ulcers, and certain forms of cerebrovascular insufficiency.

“It is commonly used to help manage symptoms that interfere with daily comfort, particularly the pain and limitations associated with walking.”


Quick Fact: Support for Symptoms Related to Physical Discomfort Throne is commonly used to help manage the leg pain and cramping that define intermittent claudication, a condition where supportive relief is relevant for managing symptoms that interfere with daily functioning.


Addressing Chronic Circulatory Deficits and Supportive Care

Throne is relevant for managing symptom clusters that may become intense or disruptive, such as numbness and tingling (paresthesias) in the extremities. It is also applied when appropriate as a supportive therapy that may be part of symptomatic management to support general well-being during symptomatic phases related to wounds, such as trophic ulcers. Furthermore, it is considered relevant in contexts involving cerebrovascular insufficiency and specific, severe conditions, such as severe alcoholic hepatitis, where supportive relief for symptoms related to systemic imbalance is relevant when supportive symptom management is appropriate.

Eligibility and Restrictions for Use

Official Population Eligibility for Throne

Throne (Pentoxifylline) is officially established for use in adult patients with chronic occlusive arterial disease, but regulatory labeling defines strict criteria for non-eligibility and restricted use.


Absolute Contraindications

The medicine must not be used by certain populations, including:

  • Patients with known hypersensitivity to pentoxifylline or other methylxanthines (such as caffeine or theophylline).
  • Patients who have recently experienced a cerebral hemorrhage or an extensive retinal hemorrhage.
  • Patients with acute myocardial infarction or active peptic ulcers (as stated in some regional labels).

Restricted and Conditional Use

Use is not recommended in patients with severe renal impairment or severe hepatic impairment due to the potential for drug accumulation.

The safety and effectiveness of Throne have not been established in pediatric patients (under 18 years of age).

For pregnant women (Category C) and nursing mothers, use is restricted, necessitating an official assessment or the discontinuation of breastfeeding. Use also requires caution in elderly patients and in those with pre-existing risk factors for bleeding or cardiovascular instability.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Throne (Pentoxifylline) is officially documented to interact with several classes of medicines, primarily through additive pharmacodynamic effects and altered pharmacokinetic exposure. The regulatory labeling notes that co-administration with anticoagulants (such as Warfarin) and platelet aggregation inhibitors (including NSAIDs and Aspirin) carries a reported risk of bleeding and/or prolonged prothrombin time. In some regulatory documents, the combination with Ketorolac is formally classified as a contraindicated combination.

A separate interaction domain involves the pharmacokinetic pathway, where certain substances increase the systemic exposure of pentoxifylline. Cimetidine and strong CYP1A2 Inhibitors (like Ciprofloxacin) are documented to raise plasma concentrations of both the parent drug and its active Metabolite I. Co-administration with Theophylline is specifically linked to the potential for increased Theophylline levels and subsequent toxicity due to inhibited metabolism.

Additionally, pharmacodynamic reinforcement occurs with antihypertensive drugs, resulting in observations of small decreases in blood pressure. Exposure constraints are also noted concerning administration timing: taking the tablet with meals increases the drug's Cmax and AUC. Clearance is officially documented as reduced, leading to increased exposure of metabolites, in patients with officially documented hepatic or renal impairment (specifically CrCl < 30 mL/min).

Mechanism of Action

Throne's mechanism of action involves the engagement of molecular signals that modulate the activity of immune cells and associated signaling pathways, resulting in the modification of downstream inflammatory mediator release.


Modulating Immune Signaling via Cell-to-Cell Communication

This domain covers how the drug candidate influences key immune signaling pathways. It works by exposing the patient's white blood cells (ex vivo) to umbilical cord-blood stem cells (CB-SCs), which transmit molecular signals to modify the phenotype and function of immune cells. This initiates a signaling sequence that modulates immune cell responsiveness.


Influence on Inflammatory Mediator Regulation

The mechanism focuses on influencing cellular interactions involved in immune regulation. The modulated cells subsequently alter the activity and expression of key immune markers and cytokines, such as Tregs and Th1/Th2 cytokines. This leads to a concentration-dependent reduction in inflammatory mediator release and promotes the differential expression of regulatory cell markers within targeted pathways.


Modulation of Repair-Associated Pathways

The resulting cascade involves a systemic effect where the modulated immune cells influence intercellular signaling. This engagement of mechanisms influences the expression of trophic and repair-associated factors in peripheral cells, shaping the resulting physiological effect profile.

Dosage and Administration Information

How to Use Throne: Official Administration Guidelines

The administration of Throne (Pentoxifylline) is based strictly on the official instructions for its extended-release oral tablet formulation, which defines the route, dosage, frequency, and specific intake conditions to ensure proper use.


Administration Scope

Feature Official Guideline
Route of administration Oral (by mouth)
Dosing schedule 400 mg per tablet, taken three times daily, for a total daily regimen of 1200 mg.
Timing in relation to meals Tablets must be taken with meals (or immediately following food intake).
Preparation requirements None; the medication is supplied as a finished oral tablet.
Age-group rules Safety and effectiveness in pediatric patients are not established. No specific dosage adjustment is required for older adults.
Special procedural conditions Severe Renal Impairment: The dose must be reduced to 400 mg once daily for patients with creatinine clearance below 30 mL/min.

Procedural Structure

The intended use of the extended-release tablet requires it to be swallowed whole and expressly prohibits crushing, breaking, or chewing. Adherence to the three-times-daily schedule with meals is critical for maintaining consistent systemic levels. Due to the chronic nature of the conditions for which the medicine is used, treatment is typically long-term, and the full therapeutic effect may take up to eight weeks to be observed. This set of instructions dictates the standardized approach to administering the medicine, focusing on proper form handling and schedule adherence.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Throne

Evidence for Symptomatic Management of Intermittent Claudication

The primary research for Throne (Pentoxifylline) consists mainly of Randomized Controlled Trials (RCTs). Researchers applied these studies to adults experiencing the pain and cramping in the legs, known as intermittent claudication, which is characterized by functional limitations related to blood flow. Researchers examined outcomes reflecting daily functioning or activity level, including measurements of how far patients could walk pain-free on a treadmill.

Studies reported patterns related to walking distances, with measurements indicating a difference in group averages when compared to the placebo group across the collected trials. This evidence has been reviewed in multiple Systematic Reviews and Meta-analyses. However, the evidence collected has limitations: the evidence quality varies across studies, and research generally describes a lack of consistent findings related to objective measures of circulation, such as the Ankle-Brachial Index (ABI). The clinical significance of the reported difference in walking distance is often discussed in scientific literature as being uncertain.

Research in Other Circulatory and Systemic Conditions

Throne has also was studied for its potential role in managing symptoms related to other systemic conditions, primarily severe alcoholic hepatitis (sAH). Research in this area includes Randomized Controlled Trials that examined outcomes related to systemic or functional imbalance, such as short-term survival rates. The findings were mixed across this body of research; while some earlier studies reported patterns of difference, later, larger clinical trials have described inconsistent results and generally did not find a statistically significant difference in key outcomes, such as short-term survival rates.

Long-Term Evidence and Durability of Study Findings

Long-term effects are not fully established. The typical follow-up durations in the largest functional trials for intermittent claudication were intermediate-term, extending up to around nine months. There is limited direct information from clinical trials about the durability of any reported functional differences or the long-term impact on the progression of the underlying vascular disease.

What is Still Uncertain About Throne's Research Record

The research base is marked by several research limitation frames. The evidence quality varies across studies, and the findings are often mixed or represent small differences in group averages. There is limited information for long-term outcomes, and regulatory reviews have noted a lack of consistent evidence that the compound affects objective physiological measures.

Frequently Asked Questions (FAQ)

Common questions about Throne (FAQ)


Q: Is Throne the same type of medicine as [similar drug name]?

Throne contains the active ingredient pentoxifylline, which is officially classified as a hemorheologic agent. This term describes a type of medicine that affects the physical flow properties of blood, primarily by enhancing the flexibility of red blood cells. Its regulatory classification defines its mechanism, distinguishing it from other types of circulation-related medicines.


Q: Can I take Throne if I am already taking common painkillers like ibuprofen?

Official documents describe that co-administration of pentoxifylline with platelet aggregation inhibitors, which includes common medicines like ibuprofen (an NSAID), carries a reported risk of bleeding. This is due to the potential for an additive effect that may affect blood clotting properties. Reviewing all current medications with a healthcare provider is a standard requirement before starting any treatment.


Q: Are there any specific foods or drinks to avoid while using Throne?

Official administration guidelines state the tablets must be taken with meals or immediately following food intake to help ensure proper systemic absorption. The official documentation emphasizes consistent use with meals. The labeling does not specify particular foods or drinks that must be avoided while using the medicine.


Q: How long does it usually take for Throne to start having an effect?

Studies and official information indicate that a person may feel an effect within 2 to 4 weeks of beginning treatment. However, official guidelines state that treatment for the primary condition may be continued for at least 8 weeks until the full therapeutic effect, as measured in clinical trials, has been observed.


Q: What does the research say about the long-term use of Throne?

Efficacy has been demonstrated in double-blind clinical studies with follow-up durations of up to 6 months. Official documents note that long-term effects beyond this intermediate-term duration are not fully established in clinical trials. The conditions for which the medicine is used often require long-term management.


Q: Do people typically use Throne alongside other non-medicine treatments?

Official patient information often describes the use of Throne in conjunction with lifestyle changes that may help reduce the symptoms of the primary condition. These often include stopping smoking and engaging in a regular, controlled exercise regimen to support overall circulatory health.


Q: Is Throne the same drug as the generic version, and how are they officially related?

The active ingredient in Throne is pentoxifylline. Pentoxifylline is the generic name of the medicine, and Throne is a brand name under which it is sold. The drug is often available in both branded and generic forms.


Q: What does the manufacturer's patient information leaflet say about storage conditions for Throne?

The patient information leaflet directs that the tablets should be stored at a controlled room temperature, typically below 25 C. The regulatory documents require the medicine to be kept in its original container, protected from excessive moisture, heat, or sunlight.


Q: Does Throne have a known risk of causing dependence or withdrawal?

Pentoxifylline is not classified as a controlled substance by the U.S. Drug Enforcement Administration (DEA) or other major international regulatory bodies. This status means it is not subject to the extra regulations concerning medicines with a high risk of dependence or misuse. Some clinical studies have examined whether patients on long-term therapy could be successfully weaned from the drug.


Q: Is it common to feel tired or dizzy when first starting Throne?

Regulatory safety data lists nervous system side effects such as dizziness and headache as events that have occurred in a small percentage of treated patients (generally 1% to 2%) during clinical trials. These are among the adverse events that may be observed when starting the medicine.


Q: Can Throne be used by older adults (e.g., people over 65)?

The official label indicates that no specific dosage adjustment is generally required for older adults. However, the official label notes that dose selection may require consideration in this age group, reflecting the greater frequency of decreased kidney or liver function that may affect how the medicine is processed by the body.


Q: If I miss a day of taking Throne, what generally happens?

Official patient instructions describe that if a dose is missed, taking it as soon as it is remembered is the typical procedure. If it is almost time for the next scheduled dose, the missed dose is generally skipped to prevent excessive exposure.


Q: What are the main known interactions between Throne and other prescription medicines?

The main reported interactions involve medicines that affect the risk of bleeding, such as anticoagulants (like Warfarin) and platelet aggregation inhibitors. Interactions also occur with medicines that increase the systemic exposure of pentoxifylline, such as certain CYP1A2 inhibitors (a type of enzyme blocker).


Q: Why do some people experience mild stomach upset when using Throne?

Gastrointestinal side effects, such as nausea and dyspepsia, are the most common adverse events reported in clinical trials. Official documents note that these side effects are often dose related, meaning they may be influenced by the quantity of the medicine taken. Tolerance to mild side effects may develop with continued use.


Q: Does taking Throne at a particular time of day matter according to official instructions?

Official instructions require the tablet to be taken three times daily with meals or immediately following food intake. This ensures consistent absorption and drug levels. Beyond adherence to the meal timing, no specific morning, noon, or evening schedule is strictly mandated in the official instructions.


Q: Is Throne considered a controlled substance by regulatory bodies?

The drug is not classified as a controlled substance by the U.S. Drug Enforcement Administration (DEA) or other major international regulatory bodies. This means it is not subject to the extra regulations concerning medicines with a high risk of dependence or misuse.


Q: Are there common household supplements that interact with Throne?

Certain common supplements, such as Garlic and Ginkgo, are known to have blood-thinning properties. These are described in some medical references as having the potential for an additive effect that could amplify the effects of pentoxifylline.


Q: What is the risk of a serious allergic reaction to Throne, according to regulatory data?

Patient information describes a very serious allergic reaction as a possible, but rare, risk. The official label lists signs such as rash, itching/swelling, severe dizziness, or trouble breathing that indicate the need for prompt medical evaluation.


Q: What are the signs of a possible serious side effect that are listed in the official warnings?

Official patient information lists signs of serious side effects that necessitate prompt medical evaluation. These may include an easy tendency to bruise or bleed, a fast or irregular heartbeat, or the onset of chest pain.


Q: Do official documents mention any potential for Throne to affect mood or mental state?

Nervous system side effects that have been reported include headache, dizziness, and insomnia. Rare cases of visual or auditory hallucinations and unusual excitement have also been noted in medical postmarketing experiences.


Q: Are there any official restrictions on who can prescribe Throne?

Throne is classified as a prescription-only medicine in the United States and other major markets. This status requires it to be prescribed by a licensed practitioner but does not impose specific restrictions beyond general state and federal prescribing laws.


Q: Is there a particular patient subgroup that Throne has been found to be most suitable for?

Throne is officially indicated for adult patients with intermittent claudication, a condition that causes pain in the legs due to poor blood flow. Clinical literature suggests its use may be considered on a case-by-case basis as a specific alternative therapy for certain individuals with the condition.


Q: What are the typical safety concerns highlighted in the official drug information for Throne?

Typical safety concerns highlighted in the official information include the most common adverse events, which are primarily related to gastrointestinal disturbance (stomach upset). The official label also highlights the risk of bleeding when co-administered with certain other medicines that affect blood clotting.


Q: Has Throne been studied in children or adolescents?

According to the official drug label, the safety and effectiveness of Throne in pediatric patients (children and adolescents) have not been established through dedicated clinical trials. Official regulatory documents do not provide established safety or effectiveness data for its use in pediatric populations.


Q: How long does Throne typically stay in a person's system?

Pharmacokinetic data shows that the active ingredient and its active metabolites are quickly processed by the body after the medication is absorbed. The half-life of the parent drug is reported to be less than two hours.


Q: Is there a warning about driving or operating machinery while taking Throne?

While the label does not carry a specific driving warning, the drug's safety information lists potential side effects like dizziness and drowsiness. These are effects known to potentially impair a person’s ability to drive safely or operate machinery.


Q: Is it true that Throne is only approved for use in certain countries?

The drug is approved for use in multiple jurisdictions globally, including the United States (FDA), United Kingdom (MHRA), and Australia (TGA). Its indication for treating intermittent claudication is generally consistent across these major regulatory bodies.


How should Throne be stored and disposed of?

How to Store and Dispose of Throne (Pentoxifylline)

Throne (pentoxifylline) tablets must be stored according to strict regulatory guidelines to maintain product stability and safety.

Storage Requirements

Store the tablets at controlled room temperature, typically between 20 C and 25 C. The medicine must be kept in its original container, which should be tightly closed to protect it from moisture and light. It is mandatory to store the tablets out of the sight and reach of children and to keep them from freezing. The extended-release tablets must not be crushed or broken.

Disposal Instructions

Unused or expired Throne should be disposed of via an official drug take-back program. If a program is unavailable, mix the tablets with an undesirable substance, place the mixture in a sealed container, and dispose of it in the household trash. Do not flush the tablets down a toilet or pour them down a drain.

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

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