Areston

Quick links to important sections

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 Areston

What is Areston?

Areston is a pharmacological treatment specifically developed for the management of symptoms associated with chronic venous disease and hemorrhoidal conditions. It is classified as a micronized purified flavonoid fraction, a category of substances derived from plant sources that are processed to enhance their absorption and effectiveness within the body.

Composition and Mechanism

The primary components of Areston are diosmin and hesperidin, typically presented in a ratio where diosmin constitutes the majority of the formulation. These substances belong to the flavonoid family, which are naturally occurring compounds known for their biological activity on the vascular system.

Areston works by influencing the tone and resistance of the blood vessels. Its primary actions include:

  • Venous Tone Enhancement: It increases the tension of the venous walls, which helps the veins pump blood more efficiently back toward the heart.
  • Microcirculation Protection: It helps reduce the permeability of capillaries, the smallest blood vessels, which can prevent the leakage of fluids into surrounding tissues.
  • Lymphatic Improvement: It assists in improving lymphatic drainage, aiding the body in the removal of excess interstitial fluid.

Clinical Applications

Areston is primarily utilized to address issues related to venous insufficiency. Patients experiencing heavy legs, pain, nocturnal cramps, and swelling in the lower limbs often use this treatment to mitigate these symptoms. Additionally, it is used in the management of both acute and chronic hemorrhoidal disease, where it helps reduce inflammation and vascular congestion in the affected area.

By targeting the underlying vascular weakness, Areston aims to improve the overall circulatory function and reduce the physical discomfort associated with these conditions.

Regulatory References

  1. MedlinePlus

What side effects are possible with Areston?

Possible Side Effects and Safety Information

Official regulatory documents classify the safety profile of Areston (Diclofenac) based on the frequency of adverse reactions and the body systems affected. As a Non-Steroidal Anti-Inflammatory Drug (NSAID), its documented effects range from common gastrointestinal discomfort to rare, but serious, systemic events.

Official Classification of Reactions

Adverse reactions are formally grouped into System-Organ Classes (SOC):

  • Gastrointestinal Disorders: These are the most commonly documented effects, including abdominal pain, nausea, vomiting, dyspepsia, and diarrhea. Rare, serious events include bleeding, ulceration, and perforation of the stomach or intestines.
  • Nervous System Disorders: Common effects include headache and dizziness.
  • Hepatobiliary Disorders: Elevated liver enzymes are frequently documented, and rare instances of severe hepatic reactions, such as liver failure, have been reported.

Serious Documented Safety Considerations

Regulatory labeling specifies critical safety concerns associated with Diclofenac use:

  1. Cardiovascular Thrombotic Events: There is a documented risk of serious events, including myocardial infarction (heart attack) and stroke. This risk may be observed early in treatment and is officially noted to potentially increase with the duration of use.
  2. Serious Gastrointestinal Events: The risk of potentially fatal bleeding, ulceration, and perforation is a key documented safety statement. These events can occur at any time during treatment without prior warning symptoms.

Population and Duration Safety Notes

Regulatory sources also define safety characteristics for specific groups. Older adults are noted to be at a greater documented risk for serious adverse reactions, especially gastrointestinal bleeding and perforation. Use is generally restricted in the setting of Coronary Artery Bypass Graft (CABG) surgery and must be avoided during late pregnancy (starting at 30 weeks gestation), according to official label instructions.

Overdose and Emergency Response

Overdose and when to seek help

This section outlines the official, regulator-documented information regarding Areston (Diclofenac) overdosage and the required emergency response.

Documented Overdose Symptoms and Severe Outcomes

Domain Official Regulatory Statement
Documented overdose presentations Overdose symptoms are typically limited to nausea, vomiting, epigastric pain, and may include lethargy, drowsiness, dizziness, confusion, headache, and tinnitus (ringing in the ears).
Severe and life-threatening outcomes Severe outcomes documented in official labeling include gastrointestinal bleeding, ulceration, and perforation, which can be fatal. Very severe overdosage is associated with acute renal failure, coma, and seizures.
Population-specific overdose notes Gastrointestinal complications of overdosage generally have more serious consequences in the elderly population.

Required Emergency Actions and Management

Domain Official Regulatory Statement
Emergency action required Seek immediate medical attention for any suspected overdose. Additionally, contact a poison control center to obtain the latest recommendations for management.
When immediate help is required Urgent help is required if symptoms of severe cardiovascular or GI toxicity occur, such as chest pain, shortness of breath, weakness, slurred speech, or evidence of internal bleeding (e.g., bloody or black, tarry stools).
Management context No specific antidotes are known for this overdosage. Management consists essentially of supportive and symptomatic measures.

Therapeutic Uses of Areston

What Areston Treats: Main Uses and Benefits

Areston is used in situations involving certain distressing symptoms, generally addressing symptoms related to physical discomfort and inflammatory or irritative states. It is commonly used in conditions where symptoms related to physical discomfort affect functional stability.


Therapeutic Scope and Symptom Relief

This medication is relevant for easing symptoms associated with conditions characterized by periods of heightened symptoms, including osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis. Areston is also applied during acute episodes of pain, such as following sprains, strains, minor surgery, or in specific recurrent situations like the pain of primary dysmenorrhea and symptomatic management during acute migraine attacks. It is often employed in situations requiring short-term symptomatic assistance to help address symptoms that interfere with daily comfort.

“Areston helps address symptom clusters that may become intense or disruptive, which contributes to easing the overall symptom load during periods of heightened symptoms.”


Clinical Applications

Areston may assist with easing discomfort and inflammation in clinical settings that involve acute or unstable symptom patterns. Its use provides supportive relief when symptoms create noticeable physiological strain, and may assist with maintaining a sense of stability when symptoms are more noticeable and coping more steadily with difficult episodes. This application supports patients during difficult episodes and contributes to easing the overall symptom load.


Quick Fact: Therapeutic Domains

Areston is commonly used to help with symptomatic relief for groups of symptoms including pain, inflammation, and fever, and is applicable within clinical settings that involve acute or disruptive symptom patterns.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility for Areston (Diclofenac) is strictly governed by official regulatory criteria, which define both eligible and excluded populations.

Allowed and Age-Group Eligibility

Use is established for adults (18 years and older). Eligibility extends to adolescents 12 years of age and older for certain approved indications. Safety and efficacy are generally not established for children younger than 12 years. Use in older adults is permitted but requires caution due to a greater risk for serious gastrointestinal and renal adverse events.

Absolute Contraindications (Must Not Use)

Areston is contraindicated in patients with a known hypersensitivity to any NSAID, a history of aspirin-sensitive asthma, or in the setting of coronary artery bypass graft (CABG) surgery. It is also contraindicated in patients with established ischaemic heart disease, peripheral arterial disease, cerebrovascular disease, or congestive heart failure (NYHA class II–IV), as specified by certain regulatory agencies.

Condition-Based Restrictions

Use is prohibited or must be avoided in patients with severe kidney or liver disease and in pregnant women starting at 30 weeks gestation. Use is restricted and requires close monitoring for patients with a history of gastrointestinal bleeding or ulcers, and for those with cardiovascular risk factors (e.g., hypertension).

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile for Areston (Diclofenac) is officially documented by regulatory authorities, highlighting combinations that modify drug exposure or increase the risk of specific adverse effects.

Classification Interacting Medicines and Substances
Contraindicated Use Use in the setting of Coronary Artery Bypass Graft (CABG) surgery is contraindicated by regulatory labeling. Co-administration with other Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), including analgesic doses of aspirin, is not generally recommended due to increased adverse event risk.
Exposure Modifying Agents CYP2C9 inhibitors (e.g., Voriconazole) may enhance the exposure and toxicity of Diclofenac. Diclofenac can cause a significant elevation of plasma levels of co-administered Lithium and Digoxin due to reduced renal clearance.
Pharmacodynamic Risks Anticoagulants (e.g., Warfarin) and other agents that interfere with hemostasis (e.g., SSRIs) carry an increased, synergistic risk of serious gastrointestinal bleeding. Co-administration with Cyclosporine may increase its nephrotoxicity.

Diclofenac may also diminish the antihypertensive effect of ACE Inhibitors, ARBs, and Diuretics. This interaction is a heightened risk in elderly or volume-depleted patients and those with renal impairment, potentially resulting in the deterioration of renal function. The label notes that administration with food may cause a reduction in the effectiveness of certain Diclofenac potassium formulations, and alcohol use increases the risk of gastrointestinal bleeding.

Mechanism of Action

How Areston Works

Areston initiates its mechanism via interaction with core biological machinery, engaging systems involved in regulating physiological activity. Its mechanism involves engaging fundamental regulatory systems within the body, altering the dynamics of receptor-mediated signaling.

Selective Engagement with Key Receptor Systems

Areston acts on specific biological targets, primarily certain receptor systems, to initiate its mechanism. The compound interacts with pathways driven by distinct signaling patterns, resulting in the modulation of cellular communication dynamics.

Modulating Intracellular Signaling Cascades

Areston’s activity extends to the internal mechanics of the cell, where it modifies early molecular steps that influence systemic biological outcomes. By influencing signaling sequences—the steps following receptor engagement—the compound alters the magnitude of downstream mediator activity within defined neural or humoral pathways.

Adjusting Pathway Dynamics

This mechanism involves modulation of systems associated with altered physiological activity, resulting in an adjustment of specific pathway dynamics. This specific pathway adjustment alters the state within affected pathways, influencing the observable changes in biological function associated with the compound.

Dosage and Administration Information

How to Use Areston: Official Administration Guidelines

Administration of Areston (Diclofenac potassium) follows specific instructions focusing strictly on the practical administration of the drug.


Administration Protocol

The approved route of administration is oral, utilizing the 50 mg film-coated tablets. The tablets must be swallowed whole with liquid; they are not to be crushed or chewed. To optimize absorption, administration is preferred before meals.


Dosing and Frequency Regimens

Usage follows the overarching principle of using the lowest effective dose for the shortest duration necessary, and is generally recommended for short-term treatment.

Usage Scenario Standard Regimen Maximum Daily Dose
General/Maintenance Use 75 mg to 150 mg total, divided into two or three daily administrations. 150 mg
Acute Migraine Attack Initial 50 mg dose, with a further 50 mg permissible after 2 hours if needed. 200 mg

Population-Specific Use

Older adults are instructed to use the lowest effective dose. For the paediatric population, Areston is generally not recommended for those under 14 years of age. Patients 14 years and older may be administered 75 mg to 100 mg daily in divided doses. Dosing adjustments for the starting dose are not specifically required for patients with renal or hepatic impairment.


These instructions define the standardized approach for using the medication, governing the physical intake, daily dosage, and duration of use.

Recent Clinical Evidence

Research Evidence: Overview of Clinical Studies for Areston


Evidence for Symptomatic Relief in Chronic Inflammatory Conditions

The research structure for chronic conditions, such as osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis, relies on both short-term Randomized Controlled Trials (RCTs) and long-term observational cohort studies. Researchers in these studies focused on outcomes related to physical discomfort and daily functioning, measuring changes in standardized scores for pain intensity and patient-reported measures of physical activity level.

For conditions like osteoarthritis, studies monitored patient-reported outcomes during the observation periods, which typically lasted up to three months for the primary evaluation timepoint. Research documents patterns observed in the measured scores for pain and function across the study groups. However, the evidence remains limited and heterogeneous regarding the ability to affect the underlying, long-term progression of these chronic diseases.


Evidence for Acute Pain Management and Symptom Control

Research exploring outcomes related to acute pain and episodic symptom patterns, such as pain following minor procedures, musculoskeletal strains, and acute attacks of migraine or primary dysmenorrhea, consists largely of short-term, placebo-controlled clinical trials. These studies were designed to assess outcomes describing episodic or acute changes. The primary outcomes examined include time-to-onset of symptom change and patient-reported outcomes describing perceived discomfort over short, defined time intervals (typically hours or a few days).

In these research scenarios, studies conducted during periods of increased symptom activity monitored the evolution of symptoms in the observed populations compared to the control groups. Findings from these controlled settings help contextualize how patient-reported outcomes describing perceived discomfort were measured.


Long-Term Research and Characteristics of Symptom Patterns

While the initial evaluation is primarily conducted in short-term studies, research has also explored its use in observational settings over extended periods. These studies were designed to monitor long-term outcomes related to continuous exposure. However, evidence remains limited regarding the characteristics of symptom patterns over many years, as follow-up durations were limited in the high-quality, randomized settings. Therefore, long-term effects are not fully established based on RCT data alone.

Key Studies & References

  1. NICE Guideline: Osteoarthritis: care and management (Clinical Evidence Summary)

Frequently Asked Questions (FAQ)

Common questions about Areston (FAQ)

Q: How quickly does Areston usually start working?

A: Official product information describes that the formulation is associated with a relatively rapid rate of absorption. Regulatory administration guidelines define a short time interval after the initial dose when a subsequent dose may be permitted, which helps define the expected duration of the onset period.

Q: What is the most commonly reported side effect of Areston?

A: Official regulatory documents categorize adverse reactions by the body system affected. According to these classifications, gastrointestinal disturbances are the most frequently reported class of effects. This category includes issues such as abdominal pain, nausea, vomiting, or diarrhea.

Q: What happens if I forget a dose of Areston?

A: Official patient information generally advises that a missed dose should be skipped if it is nearly time for the next scheduled dose. Regulatory guidelines instruct against doubling the next dose to compensate for the missed one. This protocol is intended to minimize the potential for increased side effects.

Q: Is Areston safe to use during pregnancy or while breastfeeding?

A: Regulatory documents clearly state that the use of this medication is prohibited starting from the 30th week of pregnancy. For other trimesters and during breastfeeding, official product information indicates that use is generally advised against unless a healthcare professional has determined a clear benefit that justifies the potential risk.

Q: What should I do if a side effect seems mild but bothersome?

A: Official patient materials frequently state that if any adverse reaction becomes persistent or bothersome, the medication may be discontinued. These documents typically suggest that medical consultation should be sought regarding persistent symptoms, such as indigestion or fluid retention in the feet or ankles.

Q: Is Areston a drug that requires regular lab testing or monitoring?

A: Regulatory documents advise that when this medication is used for long-term therapy, the necessity of regular monitoring is noted. This surveillance may include assessments of kidney function, liver function, blood pressure, and blood counts, as specified in the official guidance.

Q: How does Areston compare in its mechanism to other drugs for the same condition?

A: Regulatory reviews suggest that the active ingredient, diclofenac, is a non-selective NSAID. Official documents state that it carries risks concerning the heart and circulation that are similar to those seen with selective COX-2 inhibitor medications, and regulatory precautions are applied based on this similarity.

Q: Does Areston cause weight gain or weight loss?

A: While significant weight change is not listed as a primary side effect, regulatory documents do list edema as a reported adverse reaction. Edema means swelling or fluid retention, which can be observed in the limbs and may lead to a perceived change in body weight.

Q: Can Areston affect my ability to drive or operate machinery?

A: Official product information advises that if nervous system effects are experienced, such as dizziness, visual disturbances, or drowsiness, operating machinery or driving should be avoided. This cautionary statement is standard for medications that may cause central nervous system disturbances.

Q: Do people typically need to take Areston at a specific time of day?

A: The official product information specifies that the tablets are preferred to be taken before meals to optimize absorption. However, regulatory instructions do not generally specify a required time of day, such as morning or evening, for administration.

Q: Is Areston available as a generic medicine?

A: Yes, the active ingredient in Areston, diclofenac, is approved and available as a generic medicine in many authorized formulations globally. Availability may vary depending on your specific country or region.

Q: Does Areston have a risk of addiction or dependence?

A: The active ingredient in Areston is not classified as a controlled substance and is not generally associated with a risk of addiction or physical dependence. For situations of long-term use, regulatory guidance notes that abrupt discontinuation should be avoided, and guidance from a healthcare professional is noted.

Q: Is it common to feel tired or fatigued when taking Areston?

A: Yes, regulatory patient information lists several nervous system effects, including fatigue, general tiredness (malaise), and drowsiness or sleepiness, as possible side effects associated with the use of this medication.

Q: What happens when Areston treatment is stopped?

A: Since this medication is typically used for short-term treatment, official documents indicate that use can generally cease once symptoms improve. For patients who have been on long-term therapy, regulatory guidance notes that abrupt discontinuation should be avoided, and gradual reduction is often discussed.

Q: Are there different brand names for Areston?

A: Yes, the active pharmaceutical ingredient, diclofenac, is marketed globally under numerous different brand names. Areston is one of the proprietary names used for its specific formulation.

Q: How is Areston cleared from the body?

A: Official pharmacokinetic data indicates that the drug is primarily processed by metabolism within the liver. Following this processing, the resulting breakdown products, or metabolites, are then excreted from the body mainly through the urine and bile.

Q: Can Areston cause changes in mood or sleep?

A: Official documents list central nervous system effects as possible adverse reactions, which include insomnia (trouble sleeping), anxiety, depression, and irritability. These effects are noted in the regulatory safety profile.

Q: Is Areston known to interact with birth control pills?

A: Official product information includes warnings that diclofenac can potentially lead to an increase in potassium levels in the blood. This specific interaction is a documented risk for some hormonal contraceptives, such as those that contain the component drospirenone.

Q: Can Areston be used with certain herbal remedies?

A: Regulatory guidance often states that there is insufficient data available to fully confirm the safety profile of combining this medication with complementary medicines, herbal remedies, or general supplements. Official documents specify that consultation with a healthcare professional regarding these combinations is noted.

Q: Does Areston carry a specific FDA Black Box Warning?

A: Yes, as is common for many Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), the active ingredient carries an FDA Boxed Warning. This warning is a regulatory requirement highlighting the serious risks of cardiovascular thrombotic events and serious gastrointestinal events.

Q: What makes Areston different from other older treatments for the same condition?

A: Regulatory documents note that the potassium salt formulation of diclofenac, the active ingredient in Areston, is associated with a relatively faster rate of absorption. This absorption characteristic is distinct from other older forms of the drug.

Q: Is Areston only available by prescription?

A: The legal status of the active ingredient, diclofenac, can vary significantly depending on the specific country's regulatory body. While some formulations are available over-the-counter, many of the approved dosages and forms are designated as prescription-only.

Q: Is it common for Areston to be prescribed along with other drugs?

A: Regulatory data indicates that the active ingredient, diclofenac, is among the most frequently prescribed medications in many countries. This high utilization suggests that it is often used, sometimes alongside other non-interacting drugs, as part of a treatment plan.

Q: Are there any known genetic factors that affect how Areston works?

A: Studies and official information indicate that the metabolism of diclofenac is heavily influenced by a specific liver enzyme pathway known as CYP2C9. Variations in a patient’s genetic makeup related to this enzyme can affect how quickly the drug is processed and cleared from the body.

How should Areston be stored and disposed of?

How to Store and Dispose of Areston

Areston (Diclofenac Potassium) must be stored under specific environmental conditions to maintain its quality and stability, according to regulatory labeling.

Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature, between 20°C and 25°C (68°F to 77°F).
Protection Keep in a dry place, protected from excessive moisture and light.
Container Must be stored in a tightly closed container.
Safety Keep the medication out of the sight and reach of children.
Prohibited Do not subject the tablets to freezing or excessive heat.

Disposal Instructions

Expired or unused Areston must be disposed of according to local, state, and national regulations for pharmaceutical waste. The medication should not be disposed of by throwing it into household trash or flushing it down the toilet or sink, as regulatory guidance advises to avoid release to the environment.

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

Available in countries:

Equivalent of Areston found in:

A-Z Index: