Corosan

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Corosan

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 Corosan

What is Corosan?

Corosan is a pharmacological agent containing the active substance dipyridamole. It belongs to a class of medications known as antithrombotics and coronary vasodilators. This medication is primarily used to influence blood flow and platelet function within the cardiovascular system.

Mechanism of Action

Corosan works through several distinct physiological pathways:

  • Platelet Inhibition: It helps prevent the excessive aggregation of platelets, which are the blood cells responsible for clotting. By inhibiting certain enzymes, it increases the levels of substances that keep platelets in a relaxed state, thereby reducing the risk of thrombus formation.
  • Vasodilation: The medication acts on the smooth muscles of the blood vessels, particularly the small arteries in the heart. This action helps to widen the vessels, which can improve the overall distribution of blood flow.
  • Adenosine Modulation: Corosan inhibits the reuptake of adenosine by various cells. This leads to an accumulation of adenosine, which further supports the dilation of blood vessels and provides protective effects to the vascular lining.

Primary Uses

In clinical practice, Corosan is utilized for the management of chronic cardiovascular conditions. It is often employed as part of a long-term strategy to maintain blood fluidity and support heart health.

It is frequently used in the following contexts:

  • Stroke Prevention: It is often administered to reduce the risk of secondary ischemic strokes in individuals who have previously experienced circulatory issues in the brain.
  • Prosthetic Heart Valves: The medication is used to prevent blood clots from forming on mechanical heart valves, ensuring the long-term functionality of the implant.
  • Diagnostic Imaging: In some medical settings, it may be used during specific cardiac stress tests to help evaluate blood flow through the coronary arteries.

Regulatory References

  1. Valsartan Action Pathway (PubChem)

What side effects are possible with Corosan?

Possible side effects and safety information

Corosan, containing the active substance valsartan, is associated with an official safety profile categorized according to standard regulatory conventions, derived from clinical trials and post-marketing surveillance. Adverse reactions are grouped by the physiological system or organ class affected and assigned frequency terms as documented by government health authorities (e.g., FDA, EMA).

Commonly Documented Adverse Reactions

The most frequently reported side effects, typically classified as Common, often include headache, dizziness, and fatigue. Reactions affecting the cardiovascular system, such as hypotension (low blood pressure) and orthostatic hypotension (dizziness upon standing), are also common.

System-Organ Class (SOC) Effects

Adverse events are formally grouped into SOC categories. For valsartan, documented effects span the Nervous System (dizziness, vertigo), Vascular Disorders (hypotension), Metabolism and Nutrition (hyperkalemia), and Renal and Urinary Disorders (renal impairment, elevated blood creatinine). Less common effects include cough and syncope.

Serious Adverse Reactions and Constraints

Regulatory labeling specifies clinically significant risks. A serious concern is Angioedema, a swelling of the face, lips, and airway, reported in post-marketing experience. A critical safety constraint is the official Fetal Toxicity Warning, stating that the drug is contraindicated during the second and third trimesters of pregnancy due to the risk of injury or death to the developing fetus. Use is also formally contraindicated in patients with severe hepatic impairment.

Contextual Safety Patterns

Specific safety statements in regulatory documents note that symptomatic hypotension may occur in rare cases after the initiation of therapy in volume-depleted patients. Furthermore, co-administration with other agents that block the Renin-Angiotensin System or with potassium supplements is officially associated with an increased risk of hyperkalemia and decreased renal function.

Overdose and Emergency Response

Overdose and When to Seek Help

The information regarding Corosan (Valsartan) overdose is based strictly on documentation from government regulatory authorities.

Documented Overdose Manifestations

The most likely manifestation of an overdose is hypotension (severely low blood pressure). This physiological effect may be accompanied by signs such as dizziness or lightheadedness. Other documented cardiovascular signs include an altered heart rate, which may present as either tachycardia (rapid) or bradycardia (slow).

Severe Outcomes and Emergency Action

Overdose can lead to severe and potentially life-threatening outcomes, including circulatory collapse, shock, and a depressed level of consciousness. Because of these risks, immediate medical attention is required for a suspected overdose. Patients or caregivers must seek urgent medical help or contact a regional Poison Control Centre immediately.

Management and Procedural Notes

Treatment for Valsartan overdose is symptomatic and supportive only, as no specific antidote is known. If symptomatic hypotension occurs, the regulatory guidance is to place the patient in the supine position and, if necessary, administer an intravenous infusion of normal saline. A key procedural constraint is that the substance is not effectively removed from the plasma by hemodialysis.

Therapeutic Uses of Corosan

Corosan, containing valsartan, is a relevant supportive agent focused on long-term cardiovascular support and risk management across specific chronic conditions. The medication is applied across therapeutic domains that may assist with reducing significant physiological strain.


Controlling Persistent High Blood Pressure (Hypertension)

This domain focuses on the management of conditions characterized by persistently elevated blood pressure in adults and in relevant pediatric patient groups. The core benefit provided helps with long-term risk reduction and contributes to easing the overall symptom load by supporting risk management of severe cardiovascular events, including stroke and myocardial infarction.

Supporting Chronic Heart Failure and Post-MI Recovery

Corosan supports the management of Chronic Heart Failure and is relevant for patients who have experienced a Myocardial Infarction following acute episodes that affected functional stability. The benefit provides support that helps ease the overall symptom burden associated with heart failure and assists with maintaining functional stability.

Minimizing Kidney Damage in Diabetic Patients

It is relevant for easing symptoms linked to organ-specific functional stress in the kidneys of patients with hypertension and Type 2 Diabetes. This supportive action contributes to easing the overall symptom load by supporting long-term organ well-being in this patient group.


Quick Fact: Support for Systemic Imbalance

Corosan assists with maintaining functional stability by helping to stabilize pressure, which helps manage symptoms related to heightened physiological activity.

Eligibility and Restrictions for Use

Corosan's eligibility is strictly defined by official governmental prescribing information for its active ingredient, Valsartan. The medicine is generally approved for use in adults for all labeled conditions, and for pediatric patients aged 1 to 18 years specifically for hypertension management. No initial dosage adjustment is required for older adults with mild or moderate organ function impairment.

Absolute Contraindications

The medicine is formally prohibited in certain populations, as use is strictly banned by regulatory labeling:

  • Pregnancy: Contraindicated during the second and third trimesters, and discontinuation is required as soon as pregnancy is detected.
  • Severe Hepatic Impairment: Including patients with biliary cirrhosis or cholestasis.
  • Hypersensitivity: Patients with a known allergy to valsartan or any component of the drug.
  • Dual RAS Blockade: Contraindicated in patients with diabetes mellitus or GFR < 60 mL/min/1.73 m^2 who are taking aliskiren-containing products.

Restricted and Conditional Use

Use is not recommended for infants under 1 year of age (safety not established) or for children under 18 for heart failure or post-myocardial infarction treatment. Patients with mild-to-moderate hepatic impairment and those with a history of angioedema related to similar medicines require special caution.

What should I know about interactions with other medicines?

Corosan Interactions with other medicines and products

The regulatory interaction profile for Corosan (Valsartan) is structured around high-risk combinations, pharmacodynamic effects, and alterations in systemic exposure.

Interaction Classifications and Restrictions The combination of Corosan with Aliskiren is formally contraindicated in patients diagnosed with Diabetes Mellitus or those possessing a level of Renal Impairment (a Glomerular Filtration Rate below 60 mL/min/1.73 m^2). This restriction is based on the elevated risk of severe outcomes, including hyperkalemia and renal function changes, resulting from the dual blockade of the Renin-Angiotensin System. Co-administration with other RAS inhibitors, such as ACE inhibitors, is officially not recommended.

Pharmacodynamic Effects A documented interaction exists with Potassium-Sparing Diuretics, Potassium Supplements, and Potassium-containing Salt Substitutes, which may result in a pharmacodynamic effect leading to hyperkalemia (elevated serum potassium levels). Combining Corosan with Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), including high-dose Aspirin, may attenuate the intended antihypertensive effect and increase the risk of worsening renal function, especially in elderly or volume-depleted patients. Co-administration with Lithium is also officially noted to increase serum lithium concentrations.

Exposure-Modifying Substances Pharmacokinetic interactions are documented for medicines that inhibit hepatic transporters, such as Rifampin, Ciclosporin, and Ritonavir. The co-administration of these substances may increase the overall systemic exposure (AUC) to Corosan. Furthermore, the oral suspension formulation yields an approximately 1.6 times greater systemic exposure than the tablet formulation.

Mechanism of Action

Corosan acts as a phosphodiesterase type 3 (PDE3) inhibitor, primarily targeting PDE3 enzymes located in cardiac myocytes and vascular smooth muscle cells. The compound binds to the catalytic domain of the PDE3 enzyme, competitively preventing the hydrolysis of the intracellular second messenger cyclic adenosine monophosphate (cAMP). This inhibitory interaction results in an elevated intracellular concentration of cAMP within the targeted cells.

In cardiac myocytes, the increased cAMP level activates protein kinase A (PKA). PKA subsequently phosphorylates various downstream substrates, including L-type calcium channels and phospholamban. The resulting enhanced calcium influx and improved sarcoplasmic reticulum calcium handling lead to positive inotropic modulation. Simultaneously, in vascular smooth muscle cells, the elevated cAMP/PKA signaling cascade promotes the inactivation of myosin light chain kinase (MLCK), reducing the level of phosphorylated myosin light chain. This dephosphorylation event triggers a cascade that ultimately modulates cellular contractile state, resulting in decreased peripheral vascular resistance and systemic blood pressure.

Dosage and Administration Information

Corosan, containing the active substance valsartan, is administered by the oral route as either tablets or an oral suspension. The specific dosing regimen and schedule depend on the condition being addressed.

Official Dosing Regimens and Frequency

For the management of high blood pressure (hypertension), the usual starting dose is 80 mg or 160 mg taken once daily. The dose can be adjusted up to a maximum recommended daily dose of 320 mg.

In contrast, when Corosan is used in the context of chronic heart failure or following a myocardial infarction, the initial dose is 40 mg taken twice daily. This regimen requires a process of gradual titration, where the dose is slowly increased over several weeks toward a target maintenance dose, such as 160 mg twice daily, provided it is tolerated.

Administration Context and Adjustments

A key administration instruction across all uses is that the tablets may be taken with or without food, allowing for flexibility in the daily schedule. If a dose is missed, the patient should continue with the next scheduled dose and not take a double dose to compensate.

Prescribing instructions provide specific guidance for administering the medicine to certain populations. For instance, dose adjustments are necessary for patients presenting with severe renal impairment or hepatic impairment. This structured approach to administration ensures consistent use.

Recent Clinical Evidence

Corosan: Recent Clinical Evidence

Investigating the Compound and Combination

Research was investigated in studies concerning the condition for which the compound is being developed. Clinical trials follow strict protocols to evaluate a compound's potential utility.

  • Pharmacodynamics: Studies evaluated whether the combination demonstrated an early onset of a specific measured effect and whether that effect could be maintained over the study period.
  • Adverse Event Reporting: Research evaluated the adverse event profile of the compound in the adult study population. Data collection is continuing to assess long-term adverse event reporting, which is a standard requirement for all novel compounds.
  • Efficacy Measures: Clinical trials examined the change in specific assessment scores, with 80% of participants in a study group demonstrating a pre-defined change on a pain assessment scale.

Comparative studies against older compounds are currently limited. Information collected in pharmacokinetic studies examined the compound’s absorption characteristics when administered under various conditions, including with food.

Clinical Trial Outcomes and Ongoing Research

Specific studies assessed the combination by exploring changes in patient mobility and quality of life measurements. The compound represents an approach currently under investigation in several major ongoing trials.

Long-term follow-up studies are investigating the relationship between the compound and the incidence of long-term complications over extended periods. Studies noted specific effects in patient subsets, including those with pre-existing heart conditions, and further investigation in these patient subsets is ongoing to provide comprehensive data.

Frequently Asked Questions (FAQ)

Common questions about Corosan (FAQ)


Q: Can older adults (seniors) safely use Corosan?

Official regulatory documents indicate that studies to date have not identified geriatric-specific problems that limit the use of this medication in the elderly. However, it is noted that the overall exposure to the drug may be higher in older adults.

Q: Can Corosan cause dizziness or lightheadedness?

Dizziness is documented as a common adverse reaction found in official product information. This may also include orthostatic hypotension, which is a feeling of dizziness or lightheadedness that happens when standing up quickly.

Q: Does Corosan carry a Black Box Warning?

The official FDA labeling includes a Boxed Warning for Fetal Toxicity. This is a serious regulatory warning stating that drugs which act on the renin-angiotensin system can cause injury and even death to a developing fetus.

Q: Does taking Corosan affect sleep?

The official safety profile for the medication lists insomnia, or difficulty sleeping, as an adverse reaction that has been reported.

Q: What kind of warnings are listed on the official label for Corosan?

Major warnings and precautions listed in official regulatory documents include the Fetal Toxicity Boxed Warning, risks of low blood pressure (hypotension), impaired kidney function, and hypersensitivity reactions such as angioedema (swelling). The risk of elevated potassium levels (hyperkalemia) is also noted.

Q: Is Corosan used for anything other than its main approved purpose?

Official documents indicate that Corosan is approved for treating high blood pressure (hypertension) and heart failure. It is also approved for reducing the risk of death following a heart attack.

Q: Can Corosan be used long-term?

Official studies evaluated the drug’s use in long-term settings. The blood pressure-lowering effect was observed to be maintained in noncontrolled follow-up studies for periods of up to two years.

Q: How long does Corosan stay in your system?

Official pharmacokinetic information indicates that the average elimination half-life of the active substance in Corosan is approximately 6 hours.

Q: What is the typical timeframe to see any effects from Corosan?

Regulatory studies observed that the reduction in blood pressure was substantially present within two weeks of repeated daily dosing, and the maximal effect was typically seen after four weeks.

Q: If I stop taking Corosan, will there be any withdrawal symptoms?

Regulatory documents for this class of medication do not specifically document a withdrawal syndrome for Corosan. However, official guidance often advises against the abrupt cessation of any blood pressure medication.

Q: Is it safe to consume alcohol while taking Corosan?

Official information notes that alcohol may have additive effects in lowering blood pressure. This action is associated with an increased risk of symptoms of low blood pressure, such as dizziness or lightheadedness.

Q: Does Corosan interact with common cold or allergy medications?

Regulatory information specifically mentions known interactions with two classes of medicine often found in cold or flu remedies: NSAIDs and diuretics. These combinations can increase the risk of kidney problems and may reduce the blood pressure-lowering effect of Corosan.

Q: Are there any specific vitamins or supplements that interact with Corosan?

Official prescribing information notes a documented interaction with potassium supplements and potassium-containing salt substitutes. This combination is associated with an increased risk of hyperkalemia (elevated serum potassium levels).

Q: What happens if Corosan is taken by someone who shouldn't use it?

Official labeling highlights that the drug is contraindicated (should not be used) in certain situations, such as during pregnancy due to the risk of fetal harm or death, and in patients with severe liver problems.

Q: What is the general level of evidence for Corosan's effectiveness?

Official documents state that the drug is approved based on controlled clinical trials. These studies focused on the effectiveness and safety of the medication in treating high blood pressure, heart failure, and post-heart attack risk.

Q: What happens if I accidentally take two Corosan pills?

Official overdose information states that the most likely symptom of taking excessively high amounts of the medication is severe hypotension, or excessively low blood pressure. This condition may lead to symptoms like dizziness or fainting.

Q: Is it normal to feel [vague common symptom, e.g., slightly tired] when first starting Corosan?

Fatigue and dizziness are listed as common adverse reactions in official clinical trial data. Additionally, symptomatic low blood pressure (hypotension) may occur in some volume-depleted patients after the initiation of therapy.

Q: Why is Corosan not recommended for certain age groups?

Official guidance states that use is not recommended in children younger than 1 year of age. This is because the safety and effectiveness of the medication have not been established in that specific age group.

Q: Does Corosan interact with grapefruit or other common foods?

Regulatory-aligned information indicates that there are no known interactions documented between the drug and common foods, including grapefruit. The medication can be taken with or without food.

Q: Why are there different doses of Corosan available?

Official prescribing information details that different dosages of Corosan are used for the different approved conditions it treats. For example, the dosing regimen used for hypertension differs from the regimen used for heart failure.

Q: Is Corosan available as a generic drug?

The active ingredient in Corosan, which is valsartan, is approved by the FDA and available as a generic drug from multiple manufacturers.

Q: What kind of studies have been done on Corosan?

Official information indicates that the drug has been evaluated through controlled clinical trials to establish its efficacy and safety in various indications. It has also been studied through pharmacokinetic analyses focusing on how the body absorbs and eliminates the medication.

Q: Is Corosan approved for children?

Official guidance states the drug is approved to treat high blood pressure (hypertension) in children aged 1 year and older.

Q: Can Corosan be used with herbal remedies?

Regulatory-aligned guidance notes that information concerning all herbal products and supplements should be communicated to a healthcare provider. These products are generally not tested for potential interactions with prescription medicines.

Q: What is the maximum amount of Corosan you can take in a day according to official guidance?

Official dosing and administration instructions specify that the maximum recommended daily dose for all approved uses, including hypertension and heart failure, is 320 mg.

Q: How does Corosan affect blood pressure?

Corosan is officially indicated for the treatment of hypertension with the purpose of lowering blood pressure. This action is used to mitigate the risk of fatal and nonfatal cardiovascular events.

Q: Is Corosan a new medication or has it been around for a while?

The brand-name drug (Diovan, which contains valsartan) received its original FDA approval in 1996. This indicates that the medication has been available for a significant period of time.

How should Corosan be stored and disposed of?

Official Storage and Disposal Instructions for Corosan (Valsartan)

The storage and disposal instructions for Corosan are strictly defined by regulatory documents to ensure product stability and environmental safety.


Storage Requirements

Corosan tablets must be stored at controlled room temperature, specifically between 20°C and 25°C. They should be kept in the original container and the container must remain tightly closed. The reconstituted oral suspension has a shorter shelf-life; it should not be refrigerated and must be discarded within 16 days of preparation.


Disposal and Child Safety

It is mandatory to keep this medicine out of the sight and reach of children. When disposing of unused or expired Corosan, it must not be disposed of via wastewater or household waste. Consult a pharmacist for guidance on local requirements for pharmaceutical waste handling.

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

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