Tachyben

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Tachyben

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Medically reviewed

Marina Burgos

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 Tachyben

Property Description
Active ingredient Urapidil
Form Solution for injection or infusion
Pharmacological class Selective alpha1-adrenoceptor antagonist (Antihypertensive agent)
Common purpose Rapid, controlled blood pressure reduction
Origin Synthetic, Phenylpiperazine derivative

Tachyben is a prescription-only medicine whose fundamental identity is defined by its active ingredient, Urapidil, and its pharmacological role as an antihypertensive agent. Urapidil is formally classified as a selective alpha1-adrenoceptor antagonist (alpha-blocker), a type of medication that promotes controlled vasodilation. Urapidil possesses a dual mode of action, distinguishing it from older alpha-blockers. The drug is chemically a synthetic compound, a phenylpiperazine derivative that constitutes a single-ingredient product, confirming its use as a specialized therapeutic tool for managing blood pressure.

The composition of Tachyben includes the active ingredient Urapidil (usually as the hydrochloride salt) dissolved within an aqueous solution, packaged for delivery in an ampoule or vial. Tachyben is presented as a solution for injection or concentrate for infusion, which dictates its application via parenteral administration directly into the vein. Urapidil is used for the controlled reduction of blood pressure in acute scenarios requiring immediate vascular stabilization.

Mechanism and General Purpose Summary

The general purpose of Tachyben is to achieve a swift and effective reduction of systolic and diastolic blood pressure when urgent medical circumstances, such as a hypertensive crisis, require immediate control. This therapeutic benefit is achieved through its primary mechanism of inducing vasodilation (vessel widening) which decreases the total peripheral resistance in the circulatory system. Delivered intravenously, Urapidil achieves controlled blood pressure lowering within minutes.

The dual mechanism of Urapidil, which involves not only the peripheral alpha1-blockade but also a weak modulation of central serotonergic 5-HT1A receptors, distinguishes its action, leading to a smooth, controlled reduction in pressure. This makes it an essential tool for situations where rapid stabilization of the vascular system is necessary for patient safety.

Regulatory References

  1. Urapidil (EMA Periodic Safety Update Report Single Assessment)

What side effects are possible with Tachyben?

Possible side effects and safety information

The safety profile for Urapidil (Tachyben) is formally documented in regulatory materials, which classify adverse reactions based on frequency and the specific physiological system affected.

Official Adverse Reaction Classification

Adverse reactions are grouped according to the frequency with which they have been observed in clinical trials:

  • Common (may affect up to 1 in 10 people): Dizziness, Headache, Nausea, and Vomiting.
  • Uncommon (may affect up to 1 in 100 people): Palpitations, Tachycardia, Arrhythmia, Hypotension (low blood pressure), Angina pectoris (chest pain), Hypersensitivity reactions (such as rash or itching), and Sexual dysfunction (erectile dysfunction).
  • Very Rare (may affect up to 1 in 10,000 people): Angioedema (swelling beneath the skin) and Reversible Thrombocytopenia (a reduction in platelets).

These reactions are further organized by the system they affect, including Nervous System Disorders, Cardiac Disorders, Vascular Disorders, and Gastrointestinal Disorders.

Safety Considerations and Constraints

Most documented effects, such as dizziness and headache, are typically transient and may occur primarily during the early phases of therapy, often resolving as treatment progresses.

Regulatory documents list certain conditions as contraindications (reasons not to use the medicine), including aortic isthmus stenosis and arteriovenous shunt. Caution is also specified for use in certain patient groups.

  • Older Adults and individuals with Severe Hepatic Impairment may experience a prolonged half-life of Urapidil, which can lead to increased systemic exposure.

The official labeling notes that the blood pressure-lowering effect may be exacerbated when used alongside other antihypertensive agents or in states of hypovolaemia (volume depletion).

Overdose and Emergency Response

Overdose and When to Seek Help: Regulatory Information

This section outlines the documented signs and required emergency actions for Tachyben overdose, as defined in official government regulatory documents (e.g., FDA, EMA).

Documented Overdose Manifestations

Overdose with Tachyben is typically characterized by an exaggeration of its known pharmacological effects. Officially documented clinical presentations include:

  • Cardiovascular: Profound hypotension (severely low blood pressure) and significant bradycardia (abnormally slow heart rate).
  • Neurological: Severe somnolence, confusion, dizziness, and the potential for respiratory depression.

Serious Outcomes and Immediate Action

Regulators classify Tachyben overdose as having the potential for serious and life-threatening complications. These may include circulatory collapse, shock, or respiratory arrest.

When to Seek Urgent Medical Help:

The regulatory labeling mandates that individuals must immediately seek medical attention or contact a certified Poison Help Center or emergency medical services if an overdose is suspected, regardless of the severity of initial symptoms. This instruction is critical because adverse effects can escalate quickly.

Management and Monitoring

Official management guidelines focus on symptomatic and supportive care. This includes establishing and maintaining an open airway, continuously monitoring vital signs (such as blood pressure and ECG), and administering activated charcoal if ingestion was recent. Pediatric patients and those with hepatic impairment are noted in official documents as populations requiring specialized or intensified monitoring due to increased risk or prolonged effects.

Therapeutic Uses of Tachyben

What Tachyben Treats: Main Uses and Benefits

Tachyben (Urapidil) is a medication that may be part of symptomatic management in clinical scenarios. It is applied when symptoms related to systemic imbalance, specifically severely elevated blood pressure, require immediate clinical intervention.


Support for Conditions Involving Critical Blood Pressure Spikes

Tachyben is generally applied in clinical settings to treat conditions characterized by periods of heightened symptoms such as severe hypertension and hypertensive emergencies. These conditions are often associated with significantly elevated blood pressure readings that lead to symptoms linked to organ-specific functional stress. The intravenous formulation is commonly used to help with pressure reduction in acute episodes.

This use may assist with vascular stabilization and contributes to easing the overall symptom load of the crisis. It is commonly used to help with acute symptomatic episodes such as severe hypertension, hypertensive crisis, and managing blood pressure in peri-operative settings.

“The primary benefit may be part of symptomatic management by providing temporary support for pressure reduction in acute episodes.”

Support for Blood Pressure Fluctuation During Surgery

This medication may be part of symptomatic management in the specialized therapeutic domain of peri-operative hypertension. It is applied to address acute fluctuations and supports stability in blood pressure in the time surrounding surgical procedures. This use may assist with maintaining stable blood pressure during the procedure, which supports general well-being during the procedural phase.

Quick Fact: Support for Acute BP Spikes
Tachyben is relevant when short-term symptomatic assistance is needed to manage sudden, high blood pressure that requires urgent control in clinical settings.

Eligibility and Restrictions for Use

Tachyben is a prescription medication whose active ingredient is urapidil, and it is used to treat severe and very severe forms of hypertensive disease (high blood pressure). It is also indicated for the controlled reduction of blood pressure in patients who are hypertensive during or after a surgical procedure. It is generally administered intravenously in acute, controlled settings like hypertensive emergencies.


Who Can Use Tachyben?

Patient Group Indication
Adults Hypertensive emergencies, severe hypertension, perioperative blood pressure control.

Who Cannot Use Tachyben (Contraindications)?

Tachyben should not be used in certain situations due to potential risks. Patients with a known allergy or hypersensitivity to the active substance, urapidil, or any of the excipients (inactive ingredients) in the formulation must not use this drug.

Additionally, the use of Tachyben is contraindicated in patients with a condition known as aortic coarctation, which is a narrowing of the aorta that causes high blood pressure. It is also not recommended for patients with an arteriovenous shunt (a connection between an artery and a vein) other than those created for hemodialysis access. Patients with certain forms of severe cardiac failure may also be advised against using Tachyben, and the treating physician must be aware of all pre-existing conditions.

Special Caution: Use of Tachyben requires caution and careful medical monitoring in patients with pre-existing conditions like hepatic (liver) impairment and renal (kidney) impairment, as well as in older patients and those taking cimetidine (which can increase Tachyben levels). Use in children is generally not recommended, as clinical experience in this population is limited.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The use of this medicine concurrently with other products can result in pharmacokinetic or pharmacodynamic interactions, potentially requiring dosage adjustments or careful monitoring as defined in official regulatory documents.

Pharmacokinetic Interactions

Co-administration with Cimetidine—a known CYP3A4 enzyme inhibitor—is documented to increase the plasma concentration of this medicine. Due to this potential increase in exposure, the official label requires a reduced dose of this medicine when it is co-administered with Cimetidine to prevent toxicity.

Pharmacodynamic Interactions

The most significant interactions involve an additive hypotensive effect (excessive reduction in blood pressure) when this medicine is taken with other agents that also lower blood pressure or induce vasodilation. Official regulatory information highlights specific product classes and medicines where caution and intensive monitoring are required:

  • Other alpha-Adrenoreceptor Blockers
  • Beta-Blockers (e.g., beta-Adrenoreceptor Blocking Agents)
  • ACE Inhibitors (Angiotensin-Converting Enzyme Inhibitors)
  • alpha2-Adrenoreceptor Agonists
  • Diuretics (Medicines that lower blood volume)
  • PDE5 Inhibitors (e.g., Sildenafil) used for erectile dysfunction, which enhance the blood pressure lowering effect.

Restrictions

Co-administration with the above listed antihypertensive classes or vasodilators, particularly Sildenafil, necessitates careful clinical monitoring for excessive blood pressure reduction. Use with Cimetidine specifically requires a reduction in the dose of this medicine.

Mechanism of Action

How Tachyben Works

Tachyben's mechanism of action, stemming from its active substance urapidil, involves a dual approach that targets both the peripheral vasculature and the central nervous system to induce central and peripheral pathway modulation.


Alpha-1 Adrenoceptor Antagonism and Vasodilation

Tachyben primarily acts as a post-synaptic alpha-1 adrenoceptor antagonist in the periphery, blocking the action of catecholamines like norepinephrine on the smooth muscle cells of blood vessels. This receptor-mediated signaling sequence leads to the suppression of vasoconstriction, resulting in vasodilation (widening of blood vessels). This action results in decreased peripheral vascular resistance.


Serotonin 5-HT1A Receptor Modulation

The drug also engages mechanisms in the central nervous system by acting as a serotonin 5-HT1A receptor agonist in key brainstem areas. This second mechanistic domain supports the regulation of processes driven by distinct signaling patterns by modulating sympathetic efferent activity. The modification of this early molecular step shapes systemic physiological outcomes, and concurrently, this pathway avoids direct baroreflex activation.

Dosage and Administration Information

How to Use Tachyben

Tachyben (Urapidil) is a prescription-only medication administered exclusively by parenteral administration via injection or infusion to achieve rapid and controlled blood pressure reduction in acute clinical scenarios. Its use is limited to settings where continuous monitoring is possible, reflecting its role in managing severe, urgent hypertension.


Official Administration Protocol

The officially approved route of administration is intravenous (IV). The product is supplied as a solution for injection or concentrate for infusion. The standard administration involves two phases.

Administration Phase Dose Range and Procedure
Initial Reduction 10 mg to 50 mg administered via slow IV injection over 1 to 2 minutes. This dose may be repeated if necessary.
Maintenance Phase Continuous IV infusion, initiated with a maintenance rate that averages 9 mg per hour. The infusion rate is carefully adjusted to the patient’s response.

Preparation, Duration, and Population Rules

As an infusion concentrate, Tachyben must be diluted with a compatible solvent (such as sodium chloride 0.9% or glucose 5%) to a maximum concentration of 4 mg Urapidil per milliliter (mL) prior to infusion. Administration is restricted to hospital or specialized clinical settings where the patient is typically supine and under constant observation.

Intravenous treatment is generally designated for short-term use, intended not to exceed seven days. For older adults and patients with severe liver impairment, it is standard to start at a lower initial dose and proceed with more gradual dosage adjustments to ensure proper control.

Recent Clinical Evidence

Research evidence / Overview of studies for Tachyben


Evidence for Use in Hypertensive Emergencies

Research examining Tachyben (Urapidil) was conducted during periods of heightened symptom activity, specifically acute situations where blood pressure (BP) is severely elevated. The research structure primarily involves Randomized Controlled Trials (RCTs) and systematic reviews. Research observed that these studies primarily focused on adults when examining acute physiological changes related to blood pressure.

Studies monitored outcomes related to acute physiological strain or stress and measured fluctuation of BP in the hours immediately following acute treatment. Findings describe patterns observed in the studies related to the measurement of blood pressure changes in these critical scenarios. However, the available data is primarily based on short-term physiological response. Long-term outcomes related to patient health, such as extended functional status, are not fully established by the existing trial structure.


Evidence for Use During Surgical Procedures (Peri-operative Hypertension)

Tachyben was evaluated in research exploring short-term symptom changes in the context of peri-operative hypertension. Research examined outcomes related to systemic or functional imbalance, focusing on the measured changes in BP during and immediately after the procedure. This research involved Clinical Observation Studies and comparative trials.

Studies report that patterns of measured BP changes were described during the operative phase. The follow-up durations were limited to the immediate post-operative recovery phase. Comparative data is limited regarding certain intravenous agents, and generalizability to broader acute BP control settings may be limited.


Research in Specialized, High-Risk Acute Conditions

Research explored how Tachyben was evaluated in specific, high-risk groups, such as elderly patients with acute decompensated heart failure or those experiencing acute hypertensive intracerebral hemorrhage. Studies monitored changes in specific cardiac biomarkers and functional measures. Research describes that observed blood pressure values were recorded against acute therapeutic targets in these complex patients.

However, the sample sizes were modest in many of these specialized studies, and the evidence quality varies across studies. Scientific literature indicates a continued need for larger, more definitive trials to confirm findings in these complex conditions, where the certainty remains low.

Frequently Asked Questions (FAQ)

Common questions about Tachyben (FAQ)

Q: How quickly does Tachyben typically start working after beginning treatment?

A: Tachyben is administered for the purpose of rapid and controlled blood pressure reduction in acute clinical settings. Official studies and regulatory documents indicate that the medicine's therapeutic effect is typically achieved very quickly, often within minutes, following the intravenous administration. This characteristic speed of action aligns with the drug's intended use in managing urgent hypertensive situations.


Q: What should be monitored, like blood tests or checkups, while on Tachyben?

A: Because Tachyben is used only in hospital settings, its administration requires continuous monitoring of your blood pressure and heart rate by healthcare providers. Monitoring may also be performed for potential, rare side effects like reversible thrombocytopenia (a reduction in platelets), as documented in official product information.


Q: Does Tachyben have a known risk of causing a different kind of heart rhythm problem (proarrhythmia)?

A: The official product labeling lists several side effects related to the heart. Arrhythmia, which is an irregular heartbeat, and tachycardia, which is an abnormally fast heart rate, are both listed as uncommon adverse reactions observed during therapy.


Q: What if I forget to take Tachyben at the same time every day?

A: Tachyben is used only for acute, short-term treatment and is administered via continuous intravenous infusion in a hospital setting. Because the treatment duration is typically short (not exceeding seven days) and constantly monitored by medical professionals, questions about a forgotten daily dose are typically not relevant to the described acute and short-term use of this medicine.


Q: What happens if I need to have a surgery or procedure while taking Tachyben?

A: The official therapeutic indications for Tachyben include the controlled reduction of high blood pressure during and immediately after a surgical procedure, known as peri-operative hypertension. This medicine's indication for peri-operative blood pressure control aligns with its role in maintaining vascular stability during and after certain procedures.


Q: Can Tachyben affect my sleep, such as causing insomnia or excessive drowsiness?

A: Official labeling states that dizziness and headache are listed as common side effects affecting the nervous system. The official product information does not specify insomnia or excessive drowsiness as common, uncommon, or very rare adverse reactions associated with Tachyben.


Q: Is Tachyben appropriate for use in children or adolescents?

A: Official regulatory documents state that the use of Tachyben in children and adolescents is generally not recommended. The regulatory documentation notes this caution because clinical experience and safety data specific to children and adolescents are limited.


Q: What is the evidence or research saying about the long-term safety of Tachyben?

A: Research involving Tachyben primarily focuses on acute physiological response and short-term use in emergency settings. Regulatory assessments of the existing clinical trial data structure indicate that long-term outcomes related to patient health and extended functional status are not fully established.


Q: What is the typical half-life of Tachyben in the body?

A: Official pharmacokinetic properties indicate that the terminal half-life of the active substance, urapidil, is approximately three hours following intravenous administration.


Q: If I am sensitive to other heart medications, am I likely to be sensitive to Tachyben?

A: Official product information outlines specific contraindications for this medicine. The use of Tachyben is contraindicated in patients who have a known allergy or hypersensitivity to the active substance, urapidil, or any of the inactive ingredients (excipients) in the formulation.


Q: Does Tachyben have any warnings about driving or operating machinery?

A: The official warnings state that because this medicine can cause side effects such as dizziness or headache, it may impair a person’s ability to drive or operate machinery. This warning is based on the drug's common adverse effects related to the nervous system.


Q: Are there official patient education materials available for Tachyben?

A: Yes, official regulatory agencies like the European Medicines Agency (EMA) and the FDA require specific patient information. In accordance with regulatory requirements, a Patient Information Leaflet (PIL) or a Medication Guide is available to accompany the medicine in the markets where it is approved.


Q: Does Tachyben contain ingredients that might be an issue for people with common allergies (e.g., lactose)?

A: The use of Tachyben is formally contraindicated if a patient has a known allergy or hypersensitivity to the active substance, urapidil, or any of the inactive ingredients, known as excipients, in the formulation. This is a regulatory requirement to maintain patient safety regarding all components of the product.


Q: Are there research efforts focused on improving Tachyben or similar medications?

A: Official scientific literature and regulatory agencies indicate a continued need for larger, more definitive clinical trials, particularly in complex patient populations. This continued need for data is reflected in ongoing research efforts related to this medicine and its usage.


Q: Does Tachyben affect blood sugar levels, especially for people with diabetes?

A: Clinical studies have examined the metabolic effects of the active ingredient, urapidil. These studies observed that Tachyben generally does not adversely affect glucose metabolism. Findings indicate that it may be associated with favorable effects on glucose and lipid levels in patients who have pre-existing abnormalities.


Q: Can taking Tachyben cause or worsen acid reflux or stomach discomfort?

A: The official product labeling lists several side effects under the classification of Gastrointestinal Disorders. Specifically, Nausea and Vomiting are listed as common adverse reactions that have been observed during treatment.


Q: Is there a maximum time Tachyben can stay in the system after the last dose?

A: The active substance's half-life is approximately three hours. Based on official pharmacokinetic data, the medicine is substantially eliminated from the body within 15 to 20 hours after the final dose has been administered.


Q: Does Tachyben have different effects on men versus women?

A: Official product labeling lists sexual dysfunction, specifically erectile dysfunction, as an uncommon adverse reaction. This is a known difference in the effect profile observed in men during treatment.

How should Tachyben be stored and disposed of?

The storage and disposal of Tachyben (urapidil solution for injection/infusion) are subject to specific regulatory conditions to maintain stability and ensure safety.

Storage Requirements

  • Temperature and Protection: The unopened ampoule must be stored at a temperature not exceeding 30 C and must not be frozen. It is required to keep the container in the original outer carton to protect the solution from light.
  • Stability: This is a single-use solution. Once the container is opened or the medicine is diluted for infusion, it should be used immediately due to microbiological requirements.
  • Child Safety: The product must be stored out of the sight and reach of children at all times.

Disposal Instructions

  • Waste Handling: Any unused medicinal product or waste material, including discarded solution from a single-use container, must be disposed of in accordance with local requirements.
  • Environmental Rule: Medicines must not be disposed of via wastewater or household waste.

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

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