Dicynon

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Dicynon

Method of action: Angioprotective, Hemostatic

Treatment option: Crush Injury

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 Dicynon

Property Description
Active ingredient Etamsylate (Ethamsylate)
Form Tablet, Solution for Injection
Pharmacological class Systemic Hemostatic Agent
General purpose Prevention and control of capillary bleeding
Origin Synthetic sulfonic acid derivative

What Type of Medicine is Dicynon?

Dicynon is a prescription medication whose active substance, Etamsylate, is formally classified as a systemic hemostatic agent and an antihemorrhagic. This classification confirms the drug's core function in supporting the body’s ability to prevent or control blood loss originating from the circulatory system. Etamsylate is used in managing microvascular bleeding, particularly in scenarios where capillary fragility is a contributing factor. The drug acts as a vasoprotective agent that targets the microcirculation system. It strengthens the structural stability of the smallest blood vessels, the capillaries, and enhances the function of platelets, thereby reinforcing the body's native capacity to manage microvascular hemorrhages effectively.

Composition, Origin, and Forms of Etamsylate

Dicynon is a synthetic, single-ingredient product, which is a derivative of sulfonic acid, containing only Etamsylate as the therapeutic agent. The primary action of Etamsylate involves reducing capillary fragility and abnormal permeability. This medicine is manufactured in two primary dosage forms: as tablets intended for oral administration and as a sterile solution for injection designed for parenteral use, meaning it can be administered intramuscularly or intravenously. The dual availability of both an oral solid form and a rapidly acting parenteral liquid form provides a differentiating factor, ensuring that the core hemostatic action of Etamsylate can be delivered flexibly, adapting to whether rapid systemic action or maintenance therapy is required for general bleeding prevention or control efforts.

What side effects are possible with Dicynon?

Possible Side Effects and Safety Information

The safety profile for Dicynon (Etamsylate) is defined by official regulatory documents, which categorize potential adverse reactions based on their frequency and the system-organ class affected. This section describes the documented side effects and mandatory safety constraints.


Adverse Reaction Classifications

The most common adverse reactions reported are generally transient and involve the gastrointestinal and nervous systems. These reactions are typically categorized as Common in regulatory labels:

  • Common: Nausea, diarrhea, abdominal discomfort, headache, asthenia (weakness), and rash.
  • Rare: Joint pain (arthralgia).
  • Very Rare: Fever, thromboembolism, low blood pressure (hypotension), and blood disorders such as agranulocytosis and neutropenia.
  • Not Known: Severe hypersensitivity reactions, including anaphylactic shock, are documented from post-marketing reports, meaning their frequency cannot be precisely estimated.

Serious Reactions and Safety Restrictions

Official regulatory documents list rare but serious adverse events, which often require treatment to be stopped. These include thromboembolic events and blood dyscrasias (e.g., agranulocytosis).

The medication is contraindicated (must not be used) in patients with known hypersensitivity to Etamsylate or its excipients, or in those with acute porphyria. Injectable forms containing sulfites are also contraindicated for patients with sulfite sensitivity due to the risk of severe allergic response.

Safety notes for specific contexts include caution during pregnancy and lactation, where use is generally discouraged. Additionally, hypotension is noted as a risk associated with rapid intravenous injection.

Overdose and Emergency Response

Dicynon Overdose and When to Seek Help

Dicynon (etamsylate) is a hemostatic agent used to manage and prevent excessive bleeding. While no specific antidote is known for an etamsylate overdose, the management is generally supportive and symptomatic. Overdoses are rare, especially with the injectable form, which is typically administered in a clinical setting by a healthcare professional.

In the event of an overdose, symptoms may be an exaggeration of the known side effects. Symptoms could include severe headache, nausea, vomiting, diarrhea, and skin rashes.


When to Seek Immediate Help

Contact an emergency medical service immediately if a suspected overdose has occurred, or if you experience any severe or unusual symptoms after taking Dicynon. Seek prompt medical attention if you or someone else has taken more than the prescribed dose. Even if symptoms appear mild, professional advice should be sought to ensure proper monitoring and care. It is helpful to take the medication packaging or leaflet with you to the healthcare provider. You should also be prepared to state the amount taken and when the overdose occurred.

Therapeutic Uses of Dicynon

Dicynon (Etamsylate) is primarily used to provide symptomatic support by addressing different categories of bleeding and vascular fragility, which contributes to easing the overall symptom burden on the patient.

Etamsylate is relevant for easing symptoms related to bleeding, including epistaxis (nosebleeds) in conditions like hereditary hemorrhagic telangiectasia.

The medication is commonly used to help manage symptoms of excessive bleeding episodes (such as nosebleeds and gum bleeding), capillary fragility (manifesting as easy bruising and minor hemorrhages), and procedural bleeding contexts (including heavy menstrual periods and scenarios where symptoms arise after surgery). It is applied across domains where additional symptomatic support is needed.


“It is commonly used when symptoms intensify and supportive relief is needed to manage episodes of bleeding.”

Therapeutic Focus

Managing Excessive Bleeding Episodes: This area covers the medication's use in managing symptoms related to acute blood loss that are sudden or excessive. It offers symptomatic relief that helps patients cope more steadily with difficult episodes and may assist with managing the symptom burden associated with blood loss.

Supporting Capillary Fragility: Dicynon is applied in contexts where additional support for symptom management is needed due to weak or fragile capillaries, and is relevant for easing symptoms related to physical discomfort.

Quick Fact: Relief for Heavy Periods Dicynon is commonly used to help with symptoms related to heavy menstrual periods (menorrhagia) and may assist with symptomatic assistance during difficult episodes.

Eligibility and Restrictions for Use

Who can and cannot use Dicynon?

The official eligibility profile for Dicynon (Etamsylate) is strictly defined by regulatory documents, detailing patient groups for whom the medicine is approved, restricted, or strictly prohibited.

Absolute Contraindications

Dicynon must not be used if a patient has a known hypersensitivity to Etamsylate or any of the excipients. Use is also strictly contraindicated in patients diagnosed with acute porphyria or those with a history of thromboembolic events or conditions leading to extensive clotting. Furthermore, the injectable solution is contraindicated for individuals with bronchial asthma due to the presence of sulphites.

Age and Organ Function Restrictions

The standard population for the oral dosage form includes adults and adolescents. Conversely, the injectable form is specifically approved for use in neonates (low birth weight infants) for the prophylaxis of periventricular hemorrhage. Use requires caution in patients with severe renal impairment or hepatic impairment, as official clinical data may be limited in these populations.

Pregnancy and Breastfeeding Eligibility

Regulatory documentation advises that Dicynon should not be administered during the first trimester of pregnancy as a precaution. During the second and third trimesters, use is permitted only if the therapeutic benefit significantly outweighs the potential risk. Lactation is inadvisable during treatment; if the medicine is used, breastfeeding should be stopped.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Dicynon (Etamsylate) is narrow, focusing on specific constraints related to the injection formulation rather than documenting a broad range of systemic drug-drug interactions. For the oral tablet form, regulatory labeling explicitly confirms the absence of data regarding interactions with other medicinal products.

Formulation-Related Restrictions (Injection Solution)

Regulatory documentation identifies two critical constraints when the solution for injection is used, both stemming from formulation specifics:

  • Administration Sequence Restriction: A mandatory sequence rule must be followed when the parenteral solution is co-administered with a Dextran perfusion. Dicynon injection must be administered prior to the initiation of the Dextran infusion. This restriction is a required procedural constraint formally documented in regulatory sources.
  • Chemical Incompatibility: The injection solution contains a sulphite excipient which results in a direct chemical inactivation of Vitamin B1 (Thiamine). Due to this recognized interaction, these two substances must not be mixed within the same preparation or infusion to prevent the chemical degradation of the vitamin component.

The overall official interaction profile is limited to these specific, formulation-based requirements. Regulatory labels do not contain documentation of systemic pharmacokinetic, metabolic, or pharmacodynamic interactions, nor do they list contraindicated combinations or substances that modify Etamsylate's exposure.

Mechanism of Action

Capillary Wall Modulation and Permeability Control

Etamsylate modulates the structural integrity of the capillary endothelial wall and its surrounding components. This mechanism influences the mechanical resistance of the microvessels and decreases abnormal permeability by regulating local mediators, including Prostacyclin (PGI2). This action results in the physiological consequence of reduced exudation of blood components from the microvasculature.


Platelet Function Potentiation in Primary Hemostasis

A parallel mechanism involves the drug's effect on platelets, cellular components of primary hemostasis. Etamsylate modulates platelet adhesion and potentiates their responsiveness to natural aggregating signals, influencing the rate of platelet plug formation at a site of injury. This modulation influences the primary hemostasis pathway, resulting in the physiological observation of a decreased bleeding time.


Mechanistic Limitations (Scope of Action)

The drug's mechanism is specifically confined to primary hemostasis (capillaries and platelets) and does not engage the complex enzymatic cascade of secondary hemostasis (coagulation factors). The mechanism is not applicable in situations where the root cause is a deficiency in clotting factors.

Dosage and Administration Information

How Dicynon (Etamsylate) is Used: Administration Overview

Administration of Etamsylate distinguishes between two primary methods to deliver the drug's systemic hemostatic action. The medicine is available for oral intake, typically using 250 mg or 500 mg tablets, and for parenteral administration via intravenous (I.V.) or intramuscular (I.M.) injection with a 250 mg/ 2 ml solution. The solution for injection is also used as a local/topical application.


Dosing and Frequency Patterns

The dosage and schedule are specified according to the clinical context. For oral maintenance, the dose generally ranges from 250 mg to 500 mg, administered in divided doses two to three times per day (up to a 1500 mg maximum daily dose). In surgical contexts, a 500 mg parenteral dose is administered one hour before the procedure, while post-operative and emergency doses of 250 mg to 750 mg are typically scheduled every four to six hours.


Specific Administration Conditions

Standard protocols indicate that oral tablets be taken with meals and a small amount of water. When the solution for injection is prepared, it must be used immediately after dilution with saline and is known to be incompatible with certain solutions, notably sodium bicarbonate. Guidelines outline specific use for certain groups: a reduced posology is directed for general use in children, and a specific 12.5 mg/kg regimen is used for low-birth-weight neonates, administered every six hours for the first four days of life. To prevent interference with lab results, blood samples (creatinine assay) must be collected before the daily administration. The post-surgical regimen is generally continued as long as the risk of bleeding persists.

Recent Clinical Evidence

Research evidence / Overview of studies for Dicynon

Dicynon (Etamsylate) was studied in research exploring microcirculation and its effects in situations related to different types of capillary bleeding. The evidence available to understand its role comes from various research designs, including controlled clinical trials and observational studies. These studies describe patterns observed in specific populations under controlled conditions.


Evidence for Dicynon Use in Managing Heavy Menstrual Periods (Menorrhagia)

Research concerning Etamsylate for conditions characterized by fluctuating or episodic manifestations like heavy menstrual bleeding primarily includes short-term Randomized Controlled Trials (RCTs). These trials were applied in studies examining patient-reported experiences in women diagnosed with primary menorrhagia. Comparative studies report how symptoms evolved in the observed populations, and findings may suggest a different measurement of blood loss volume was observed when Etamsylate was studied for this use compared to other agents examined in the same trials. Because the follow-up durations were limited, the long-term effects are not fully established.


Evidence for Dicynon Use in Procedural and Surgical Bleeding

Etamsylate was evaluated in various surgical scenarios, including procedures like transurethral resection of the prostate and myomectomy. Research examined the outcomes related to systemic or functional imbalance during the immediate perioperative period. Studies monitored intraoperative and postoperative blood loss, as well as tracking clinical indicators such as the recorded need for blood transfusions. Data describe patterns observed in the studies related to measured blood loss volume during these short-term studies.


Evidence for Dicynon Use in Specific High-Risk Neonatal Care

Etamsylate was studied in research exploring outcomes related to Periventricular Hemorrhage (PVH) incidence in neonatology, specifically in very low birth weight infants. The available evidence is derived from specialized double-blind, placebo-controlled trials. These studies monitored the incidence rate and severity (grade) of PVH. It is important to understand that the results apply only to the populations studied.


What is Still Uncertain About Dicynon Research

One major area of uncertainty is that comparative evidence is lacking for many indications; findings were sometimes mixed when Etamsylate was observed in trials with other agents studied for the same condition. Furthermore, data for certain groups remain insufficient, as most trials focused on specific, narrowly defined patient groups, meaning subgroup findings are uncertain for many comorbid or varying disease severity groups. The durability of any measured changes over many months or years are still emerging and are not well-characterized.

Key Studies & References

  1. Ethamsylate in the prevention of periventricular-intraventricular hemorrhage in premature infants - Randomized Controlled Trial (1993)

Frequently Asked Questions (FAQ)

Common questions about Dicynon (FAQ)

Q: What should I do if I miss a dose of the oral tablets?

Regulatory guidance and Patient Information Leaflets for this drug generally suggest skipping the forgotten dose and continuing with the regularly scheduled dose. It is usually advised not to take a double dose to make up for the missed one.

Q: When is the best time of day to take the oral tablets?

According to the official product information, the tablets are directed to be taken with meals. Official administration instructions also state the tablets are to be taken with a small amount of water.

Q: Does Dicynon interact with common over-the-counter pain relievers (like ibuprofen or acetaminophen)?

For the oral tablet form, official regulatory labeling explicitly confirms the absence of data regarding interactions with other medicinal products. Therefore, the official regulatory profile does not list documented interactions with common over-the-counter pain relievers.

Q: Can this medicine be mixed with other IV drugs, and what happens if it's mixed with Vitamin B1?

The solution for injection is known to be chemically incompatible with certain solutions, such as sodium bicarbonate. Due to chemical incompatibility, official documents state the injection solution must not be mixed with Vitamin B1 (Thiamine), as this can lead to the vitamin component being chemically inactivated.

Q: What should I do if I accidentally take too much Dicynon (overdose)?

Official regulatory documents indicate that no cases of overdose have been reported with this medicine. If an overdose were suspected, regulatory advice suggests that symptomatic treatment should be initiated.

Q: Is Dicynon a blood thinner (anticoagulant)?

Dicynon is officially classified as a systemic hemostatic agent, which supports the control of bleeding. Its mechanism is noted to be confined to primary hemostasis, focusing on capillaries and platelets, and it does not interact with the coagulation factors that are typically targeted by anticoagulant medications.

Q: How quickly does Dicynon start to work?

Pharmacokinetic data suggests that the highest concentration in the blood (Cmax) for the oral form is generally observed around 4 hours after administration. For the intravenous injection, the maximum concentration is typically reached much sooner, around 10 minutes after administration.

Q: How long does Dicynon stay in my system after the last dose?

Studies show the time it takes for half of the medication to be cleared from the plasma (half-life) is approximately 3.7 hours for the oral form and 1.9 hours for the injectable form. The majority of the dose is typically excreted within the first 24 hours.

How should Dicynon be stored and disposed of?

Official Storage and Disposal Requirements for Dicynon (Etamsylate)

Storage & Disposal Scope Official Regulatory Requirement
Storage Temperature Store below 30 C (varies by formulation/market, sometimes specified as below 25 C).
Light & Moisture Protection Protect injection ampoules from light. Store tablets/capsules in a dry place.
Stability & Handling The solution for injection is for single use only; discard any unused portion immediately after opening. Do not administer if the solution is colored.
Child Safety Storage Keep this medication out of the reach of children.
Disposal Instructions Do not dispose of unused or expired medicine via wastewater or household trash. Consult a pharmacist for proper disposal according to local environmental regulations.

The official documents define how the product must be protected from high heat and light to maintain stability throughout its shelf-life. This information strictly directs users to discard the injection solution after the first use and mandates pharmaceutical return programs for final environmental disposal, ensuring no unused medication contaminates water supplies or remains accessible to children.

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

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