Perisin

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Perisin

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 Perisin

What is Perisin? Definition and Classification

Property Description
Active ingredient Dipyridamole
Form Oral tablets/capsules, IV injection solution
Pharmacological class Antiplatelet agent, Vasodilator
General purpose Prevention of unwanted platelet aggregation
Origin Synthetic compound

Perisin is a synthetic, prescription-only medication whose active component is Dipyridamole, a substance structurally characterized as a pyrimido-pyrimidine derivative. This substance is classified as an antiplatelet agent and a vasodilator. Dipyridamole's antiplatelet function centers on modulating the behavior of blood components to inhibit their aggregation, or tendency to clump together. Pharmacological studies confirm Dipyridamole's role in inhibiting the uptake of adenosine by blood cells. This mechanism helps increase a naturally occurring substance that promotes vessel widening and further prevents platelet stickiness.


Composition, Forms, and General Purpose

Perisin is a single-ingredient pharmaceutical preparation, meaning Dipyridamole is its sole therapeutic component. The medication is available for both oral administration in solid forms, such as film-coated tablets or extended-release capsules, and as a solution for intravenous injection. The availability of both oral and injectable preparations is a distinguishing feature, allowing clinical application flexibility. The general therapeutic purpose of using Dipyridamole is to provide a fundamental mechanism for reducing the risk of unwanted clotting events. The utility of Dipyridamole lies in its ability to modify platelet function for antithrombotic therapy. This confirms the medication’s role in promoting smooth, continuous blood flow by inhibiting the very first steps of clot formation.

What side effects are possible with Perisin?

Possible Side Effects and Safety Information

The official safety profile of Perisin (Dipyridamole) is defined by a range of adverse reactions classified by frequency and grouped into System-Organ Classes (SOCs), as documented by government health authorities. Headache and dizziness are officially classified as Very Common (ge 1/10). Effects classified as Common (ge 1/100 to <1/10) often include gastrointestinal issues such as nausea, diarrhea, vomiting, and abdominal pain, as well as flushing and tachycardia (increased heart rate).

Many common effects, particularly headache, dizziness, and gastrointestinal symptoms, are documented as transient and may diminish with continued use. However, some common events, such as aggravated angina pectoris, are noted to potentially occur at the start of treatment or during dose escalation.

Serious Adverse Reactions and Safety Constraints

Regulatory labels document clinically significant and rare reactions, including hepatic failure and severe dermatological events such as Stevens-Johnson syndrome (SJS) and Toxic epidermal necrolysis (TEN). Rare reports of thrombocytopenia (low platelet count) are also documented in the Blood and Lymphatic System Disorders class.

Population-specific cautions exist for older patients due to the potential risk of falls linked to dizziness. Caution is also noted for patients with severe hepatic impairment and those with Myasthenia Gravis. The medicine is formally contraindicated in individuals with known hypersensitivity to the active substance and in patients with certain severe cardiac issues, such as unstable angina pectoris or recent myocardial infarction.

Overdose and Emergency Response

Overdose and when to seek help

The information in this section is based solely on official regulatory descriptions of overdose for Perisin (Dipyridamole) and mandated emergency actions.

Documented Overdose Manifestations

An overdose of Perisin is primarily characterized by severe hemodynamic effects. Documented signs and symptoms include a significant drop in blood pressure (hypotension) and a rapid heart rate (tachycardia). Related general systemic manifestations may include dizziness, flushing, a warm feeling, sweating, and restlessness. Gastrointestinal effects such as vomiting and diarrhea have also been observed in overdose cases.


Emergency Actions and Supportive Care

The regulatory labeling requires that individuals seek immediate medical attention and contact a Poison Control Center if an overdose is suspected or confirmed. Due to the severe cardiovascular effects, careful medical management is essential. The official guidance states that the hemodynamic effects may be reversed by administering a xanthine derivative, specifically citing aminophylline as an example.

Management is primarily symptomatic and supportive. Procedures such as gastric lavage should be considered, and ECG monitoring is advised. Because the active ingredient is highly protein bound, enhanced removal procedures like dialysis are not likely to be of benefit in the management of overdose.

Therapeutic Uses of Perisin

What Perisin Treats: Main Uses and Benefits

Perisin is generally used as a prophylactic agent across cardiovascular domains where reducing the risk of a severe vascular event is critical. Its primary applications involve assisting in anti-clotting therapy and specialized heart testing, providing supportive relief in various high-risk scenarios.

The medication is commonly used across conditions characterized by the chronic risk of severe vascular events. It is primarily relevant for managing the physiological stress associated with the continuous risk following an ischemic stroke or transient ischemic attack (TIA), and may be part of symptomatic management as an adjunct to anticoagulants for prophylaxis against thromboembolism after mechanical heart valve replacement. The injectable form is also relevant in clinical settings for specialized cardiac diagnostic support when patients cannot exercise.


Quick Fact: Purpose in Therapeutic Domains

Perisin is applied across domains where additional symptomatic support is needed to manage the intrinsic risk of future, severe vascular events, rather than treating mild symptoms.

Eligibility and Restrictions for Use

Who Can and Cannot Use Perisin?

The population eligibility for Perisin (Dipyridamole) is defined by official regulatory labeling, detailing which groups are authorized to use the medication and which are restricted or prohibited.

Absolute Contraindications

Perisin is contraindicated in patients with a known hypersensitivity to the active ingredient, Dipyridamole, or to any of the product's excipients.

Age-Related Eligibility

Age Group Eligibility Status (Regulatory Basis)
Pediatric (< 12 years) Use is not established and not recommended due to lack of adequate safety and effectiveness data.
Adults & Elderly Use is authorized for specific indications. No dosage adjustment is typically needed for elderly patients.

Condition-Based Restrictions

Use of Perisin requires caution in patients with certain conditions, including severe coronary artery disease (such as unstable angina or recent myocardial infarction), hypotension (low blood pressure), and Myasthenia Gravis.

Regarding organ function, no dosage adjustment is explicitly required for patients with renal impairment or hepatic impairment for the prolonged-release forms, although reports of hepatic enzyme elevations have been noted.

Pregnancy and Lactation

Perisin should be used during pregnancy only if clearly needed, as adequate human safety studies are lacking, and avoidance may be advised during the first trimester. The drug is excreted into human milk, and use during breastfeeding is recommended only if considered essential by a physician.

What should I know about interactions with other medicines?

The official regulatory profile for Perisin (Dipyridamole) documents several categories of interactions, primarily structured around pharmacodynamic liabilities and changes in plasma concentration.

Contraindicated Combinations and Additive Effects

Coadministration with Riociguat is formally contraindicated by some regulatory authorities due to the risk of additive hypotension resulting from enhanced vasodilation. The combination of Perisin with anticoagulants (such as Warfarin or Heparin) and other antiplatelet agents (including Aspirin or NSAIDs) is associated with an increased risk of bleeding due to additive pharmacodynamic effects on clotting. Furthermore, Dipyridamole significantly increases the plasma levels and cardiovascular effects of Adenosinergic Agents (e.g., Adenosine, Regadenoson) used in diagnostic settings.


Exposure Modification and Transporter Activity

Dipyridamole is officially documented as an inhibitor of the BCRP and P-glycoprotein (P-gp) efflux transporters. This transporter inhibition is why coadministration can increase the systemic exposure of other medicines that are BCRP or P-gp substrates. Conversely, medicines that induce BCRP (e.g., Apalutamide) may be expected to decrease Dipyridamole's systemic exposure.


Procedural and Timing Restrictions

Regulatory labeling specifies mandatory timing rules for specific diagnostic procedures. Oral Dipyridamole intake must be interrupted within 48 hours prior to a pharmacological cardiac stress test utilizing intravenous adenosinergic agents to manage the interaction effects.

Mechanism of Action

How Perisin Works

Perisin (Dipyridamole) acts via a dual pharmacological mechanism to modulate activity within pathways governing platelet function and vascular tone, primarily through two distinct molecular systems. The overall effect is achieved by increasing the concentration of key signaling molecules within the bloodstream and targeted cells.


Modulation of Cyclic Nucleotide Pathways

This mechanism centers on the inhibition of Phosphodiesterase (PDE) enzymes (specifically PDE3 and PDE5), which are responsible for breaking down the intracellular messengers cAMP and cGMP. By preventing this degradation, Perisin sustains high levels of these messengers inside platelets and vascular smooth muscle cells. This resulting cAMP and cGMP surge disarms the internal molecular signals that trigger platelet aggregation and results in the relaxation of vascular smooth muscle.


Enhancement of Endogenous Adenosine Signaling

The drug also blocks the Equilibrative Nucleoside Transporter-1 (ENT1), the protein responsible for clearing naturally occurring adenosine from the area surrounding the cells. This inhibition elevates extracellular adenosine levels, which stimulates A2 A receptors on platelets and vessel walls. This action reinforces the effect of PDE inhibition, increasing anti-aggregatory signaling and resulting in an increase in regional blood flow.


Physiological Constraint: Coronary Flow Distribution

A physiological consequence of the drug's pronounced, non-selective vasodilatory mechanism is the potential for coronary steal. This occurs when the drug's action causes greater widening of non-diseased arteries, which can divert blood flow away from already dilated vessels in areas of the heart with existing vessel stenosis, representing an intrinsic limitation of the mechanism.

Dosage and Administration Information

How to Use Perisin

Perisin (Dipyridamole) is used according to distinct protocols based on its two official administration methods: oral for long-term prophylaxis and intravenous (IV) for short-term diagnostic support. The specific regimen, timing, and setting are standardized for its clinical application.


Official Administration and Dosing

Category Administration Guideline
Route of Administration Oral forms (tablets, capsules) for routine use; Intravenous solution for specialized procedures.
Oral Dosing Schedule Immediate-release formulations are typically taken in divided doses, up to four times daily (QID), with a maximum total dose not exceeding 400 mg per day.
IV Dosing Protocol The IV form is administered as a continuous infusion at a rate of 0.142 mg/kg/min for a brief, defined duration, such as four minutes.

Procedural Instructions and Constraints

The timing and form of ingestion are essential for proper use. Immediate-release tablets are generally taken with or immediately after a meal to mitigate potential gastric discomfort. Conversely, extended-release capsules must never be crushed or chewed to preserve the integrity of their modified-release properties.

Special Conditions: The intravenous solution requires mandatory dilution before administration and is delivered in a specialist hospital setting under continuous medical supervision. For patients with hepatic impairment, established guidelines suggest careful consideration for potential dose adjustment due to the drug’s primary metabolic pathway. If a dose is missed, it is typically taken as soon as possible, but doses are not to be doubled.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Perisin

1. Evidence for Use in Secondary Prevention of Stroke and TIA

Research exploring the compound Dipyridamole in this area has primarily involved large-scale, Randomized Controlled Trials (RCTs) and subsequent systematic reviews and meta-analyses. The studies examined outcomes related to conditions characterized by fluctuating manifestations in adults who had previously experienced an ischemic stroke or a transient ischemic attack (TIA).

Studies evaluated outcomes, focusing on vascular event rates over the study duration. Research describes findings related to measured outcomes when the extended-release formulation was used in combination with aspirin, in contrast to using aspirin alone. Findings varied across trials using earlier formulations, which contributed to heterogeneity in the overall evidence landscape.

2. Evidence for Use as an Adjunct for Mechanical Heart Valve Prophylaxis

Research explored the use of Dipyridamole with standard blood thinner medication (anticoagulants) following mechanical heart valve replacement in a series of Randomized Clinical Trials (RCTs), mostly conducted several decades ago. Studies monitored patients receiving established oral anticoagulation, and research examined outcomes describing episodic or acute changes related to vascular events, such as the incidence of thromboembolic events.

Studies described patterns related to vascular event rates in patient groups where Dipyridamole was associated with the existing anticoagulant therapy. Since these studies are not contemporary, evidence quality varies across studies, and the research relies on a foundation of older data.

3. What is Still Uncertain About Perisin Research

Research contributes to the broader evidence landscape, but several areas of uncertainty remain. The comparative evidence is lacking between Dipyridamole combinations and certain other antiplatelet agents. Additionally, the evidence base for heart valve prophylaxis is primarily historical, and its relevance to current treatment protocols is not fully established. There is limited information for long-term outcomes beyond the observation periods of the original research trials.

Frequently Asked Questions (FAQ)

Common questions about Perisin (FAQ)

Q: What is the main medical condition Perisin is approved to treat?

Official regulatory documents state that Perisin is approved for use as an adjunct in the prophylaxis of thromboembolism in patients with cardiac valve replacement. It is also approved for use in specific diagnostic procedures, such as thallium nuclear stress testing.


Q: Is there any official information on using Perisin for conditions other than the approved one?

The official product information addresses only the uses that have been fully approved by health authorities. Any use for other conditions is considered off-label, and regulatory documentation is restricted to the officially approved indications.


Q: Is it documented that Perisin can affect a person's sleep schedule?

Official safety information indicates that sleepiness or unusual drowsiness is listed as a less common or rare symptom, particularly when used as part of a combination product. This information is noted in regulatory documents regarding the drug's possible effects.


Q: Is hair loss mentioned as a known side effect of Perisin?

Official documents and clinical reports indicate that hair loss has been reported as a rare adverse effect that has been associated with the medication.


Q: What do official sources say about drinking alcohol while taking Perisin?

The official guidance notes that alcohol intake is advised to be limited or avoided. This is particularly important when Perisin is used with aspirin, as the combination may increase the risk of stomach irritation and gastrointestinal bleeding.


Q: Are there any specific dietary restrictions mentioned in the official Perisin labeling?

Specific dietary constraints are primarily noted for the intravenous form: the consumption of caffeine-containing foods and beverages is a mandatory requirement to be avoided for 12 to 24 hours before a diagnostic test. No special restrictions are typically noted for chronic use of the oral form.


Q: What types of supplements or herbal products are known to interact with Perisin?

Official guidance includes a recommendation to exercise caution when considering herbal remedies or supplements while taking this medication. This advice is specifically directed toward products that are known to affect blood clotting, such as Ginkgo, due to the risk of additive effects.


Q: How long does it typically take for Perisin to start having its intended effect?

Studies indicate that plasma concentrations reach their maximum approximately one to two hours after taking the medication. This timeframe is when the drug's action of inhibiting platelet aggregation has been detected in studies.


Q: If a person feels better, what is the established guidance on stopping or continuing Perisin?

Official patient information states that because this medication is used for prophylaxis (prevention), the drug must not be discontinued without consultation with a health professional. Continuing the prescribed regimen is necessary to maintain the preventative effects.


Q: Does Perisin build up in the body's system over time?

Pharmacological studies indicate that Perisin has a relatively long terminal half-life of approximately 24 hours. Due to this characteristic, the drug accumulates toward a stable level in the body, known as steady-state, when taken regularly as prescribed.


Q: Is there any information regarding Perisin's effect on fertility in men or women?

Official safety information notes that human data regarding the drug’s effect on fertility is not available. Animal studies have indicated potential effects on implantation and live fetuses, but these were observed only at very high doses.


Q: How is Perisin's performance different from a placebo in its clinical trials?

Studies have shown that when Perisin is used in combination with aspirin for stroke prevention, it is associated with a statistically significant reduction in the rate of vascular events compared to control groups in clinical trials.


Q: Does Perisin aim to cure the condition or primarily manage the symptoms?

Perisin is classified as a prophylactic agent, meaning its primary function is prevention rather than cure. Its action is focused on reducing the risk of serious medical problems by acting as an antiplatelet agent to inhibit blood clotting.


Q: What is the half-life of Perisin, and what does this mean?

The terminal half-life of Perisin is approximately 24.1 hours. This is a pharmacological measure that indicates the time it takes for half of the amount of the drug to be eliminated from the body's system.


Q: What types of vision changes are associated with taking Perisin?

Official safety information indicates that rare side effects, especially with the combination product, have included double vision. Any severe or sudden vision changes are documented as serious symptoms that necessitate seeking immediate medical attention.


Q: Can taking Perisin cause 'brain fog' or memory issues?

Less common side effects reported with the use of the drug's combination product have included symptoms such as confusion, difficulty speaking, and memory loss. This information is included in the official safety documents.


Q: Is Perisin only available as a brand-name drug, or is a generic version available?

The active ingredient in Perisin is Dipyridamole, and a generic version of this compound is generally available alongside the brand-name product.


Q: What are the signs of a severe allergic reaction to Perisin?

Official patient information states that signs of a severe allergic reaction may include hives, difficulty breathing, or swelling of the face, lips, tongue, or throat. These signs necessitate seeking emergency medical attention.


Q: What specific information is addressed in the Black Box Warning for Perisin?

According to the official regulatory monograph for the single-ingredient product, Dipyridamole (Perisin) does not carry a Black Box Warning.


Q: Is Perisin a maintenance drug or used for short periods of time?

The official administration guidelines indicate that the oral form is typically prescribed for long-term prophylaxis, serving as a maintenance type of therapy. Conversely, the intravenous form is used for short, defined periods solely for diagnostic support.


Q: Are the side effects of Perisin temporary, or do they usually last for the duration of treatment?

Official safety information indicates that many common side effects, such as headache and dizziness, are transient and may lessen as the body adjusts to the medication. The duration of less common or serious adverse effects is not typically documented as temporary.


Q: Does Perisin interact with common blood pressure medications?

Due to its action as a vasodilator, Perisin can lower blood pressure. Official information notes that caution is warranted when the drug is co-administered with other agents that also cause vasodilation or in patients with pre-existing low blood pressure (hypotension).


Q: What is the usual duration of treatment recommended for Perisin?

The oral formulation is intended for long-term use as part of a prophylactic regimen. The specific total duration of treatment is required to be determined on an individual basis by the prescribing healthcare provider, depending on the condition being addressed.


Q: How is the effectiveness of Perisin typically measured in official clinical studies?

Official clinical studies typically measure the effectiveness of Perisin by evaluating clinical outcomes such as the frequency and risk of serious thromboembolic (clotting) and vascular events. This allows for a measure of how the drug is acting over the duration of the study.


Q: Are there special considerations for taking Perisin during pregnancy or planning to conceive?

Regulatory documents specify that the medication is to be used during pregnancy only if clearly needed. The product information does not provide specific details regarding pre-conception planning.


Q: Is Perisin suitable for people with pre-existing liver or kidney problems?

Official guidance indicates that use requires caution in patients with severe liver (hepatic) problems. Potential dose adjustment is noted as requiring careful consideration by the prescriber. No explicit dose adjustment is stated as required for patients with kidney (renal) problems.


Q: Are there long-term safety studies available for Perisin?

Information from official sources indicates that the evidence regarding long-term outcomes is limited beyond the specific observation periods of the original clinical research trials.


Q: Does Perisin contain any common inactive ingredients like gluten, lactose, or dyes?

Official patient information advises that the medication contains inactive ingredients (excipients) that can potentially cause allergic reactions. The label or package ingredients must be read carefully to verify the presence of common components like gluten or lactose.


Q: How does the body eliminate or get rid of Perisin after it has been used?

Official pharmacological information states that the drug's primary metabolic pathway involves the liver. Perisin is then eliminated from the body in a way described as biexponential, meaning clearance occurs in two distinct phases.


Q: What were the key results from the main pivotal clinical trials for Perisin?

Studies showed that the extended-release formulation, when used in combination with aspirin, was effective in reducing the risk of stroke in certain patient populations. The official documents describe the findings in terms of reduced vascular events compared to using aspirin alone.

How should Perisin be stored and disposed of?

Storage and Disposal Requirements for Perisin (Dipyridamole)

The official storage conditions for Perisin vary by preparation. Oral tablets and capsules must be stored at room temperature, away from excess heat and moisture; regulatory guidance strictly prohibits storage in the bathroom. The intravenous solution must also be stored at room temperature but requires specific protection from light and must be handled to avoid freezing.

All forms of the medication must be kept in the container it was provided in and kept tightly closed. A mandatory storage requirement is to keep Perisin out of the sight and reach of children and pets, always ensuring safety caps are locked.

For disposal, the product must not be flushed down the toilet. The preferred method is to utilize a federal medicine take-back program.

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

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