Borenar

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Borenar

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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 Borenar

Borenar is a modern pharmaceutical product whose active substance is Bilastine, primarily used to counteract the effects of the body's allergic response. It is a prescription-only medicine (Rx) available for oral administration, typically manufactured by Menarini, and is recognized across several international markets. Borenar represents a clear advancement in antiallergic therapy, distinguishing itself through its specific mechanism and profile.


Quick Facts

Property Description
Active ingredient Bilastine
Form Tablet, Orodispersible tablet
Pharmacological class Second-generation Antihistamine
General purpose Antiallergic effect
Origin Synthetic compound

What Type of Medicine is Borenar (Bilastine)?

Borenar is classified as a second-generation antihistamine, belonging to the larger pharmacological class of anti-allergic agents. Specifically, the active ingredient Bilastine functions as a selective peripheral H1-receptor antagonist. Pharmacological studies confirm that, unlike older antihistamines (first-generation), Bilastine is a synthetic compound designed for high specificity and a low propensity to cross the blood-brain barrier.

This selective characteristic minimizes the central nervous system effects often associated with the older class, such as significant drowsiness or sedation. This design ensures that the patient maintains alertness and cognitive function while benefiting from the anti-allergic effect.


Borenar's Composition and General Purpose

The medication is a single-ingredient product featuring only the active compound Bilastine, formulated for delivery as a tablet or an orodispersible tablet. Borenar's general purpose is to provide relief from the manifestations of allergy, such as those experienced during the typical hay fever season, by directly countering the chemical mediator responsible for these symptoms.

The primary principle of Bilastine's function is the selective histamine blockade at the peripheral receptors. When the body encounters an allergen, it releases large amounts of histamine, which triggers the allergic cascade of itching, swelling, and redness. By blocking the H1 receptors, Borenar prevents this histamine from binding and activating the cells, thus delivering a general antiallergic effect that mitigates the body's overall inflammatory response to allergens.

What side effects are possible with Borenar?

Possible Side Effects and Safety Information for Borenar (Bilastine)

Category Description
Frequency Classification Common (ge 1/100 to < 1/10): Somnolence (Drowsiness), Headache. Uncommon (ge 1/1000 to < 1/100): Includes Dizziness, Fatigue, Nausea, Dry mouth, and specific ECG findings.
System-Organ Classes Involved Adverse reactions are officially grouped into systems, notably the Nervous System (e.g., somnolence, headache, dizziness), Gastrointestinal Disorders (e.g., nausea, abdominal pain), and Cardiac Disorders (e.g., Electrocardiogram QT prolonged).
Serious Adverse Reactions Regulatory documents note the risk associated with QTc prolongation and the potential for an unsafe abnormal heart rhythm called Torsade de Pointes. Hypersensitivity reactions are listed as a contraindication.
Population Safety Notes Caution is required for patients with moderate or severe renal impairment if Bilastine is co-administered with P-glycoprotein inhibitors, which could increase the drug’s systemic levels. Hepatic impairment is not expected to increase exposure above the safety margin.
Safety-Related Restrictions The medicine is contraindicated in individuals with a known history of QT prolongation or Torsade de Pointes. Additionally, co-administration with food or fruit juices can result in reduced bioavailability, affecting the medicine’s intended effect.

The official safety information structures the understanding of Bilastine's risk by defining common and uncommon effects through frequency and system classification, while strictly establishing the critical cardiovascular limits via contraindications based on QTc interval risk. This framework also defines specific constraints for use in patients with impaired kidney function when P-glycoprotein inhibiting medicines are co-administered, outlining the official boundaries of the medicine's documented safety profile.

Overdose and Emergency Response

The official regulatory profile for Borenar (Bilastine) documents specific clinical manifestations that may occur in the event of overdosage. Based on high-dose clinical trial data, documented presentations include dizziness, headache, and nausea. While high-dose studies reported these as non-serious, post-marketing reports have indicated the potential for more serious outcomes, including cardiovascular effects such as tachycardia (fast heart rate) and palpitations. There are also reports of loss of consciousness observed, particularly in children. Official documentation notes that there are no specific overdose data available concerning the pediatric population.

When to Seek Urgent Help

In the event of suspected overdosage, immediate action is required as stated in government guidance. Individuals must seek immediate medical attention and should contact their regional poison control centre for management advice. It is mandatory to call emergency services if severe symptoms like passing out or difficulty breathing are observed.

Management and Monitoring

Due to the absence of a known specific antidote to Bilastine, clinical management is focused entirely on symptomatic and supportive treatment. Furthermore, the regulatory guidance recommends Electrocardiogram (ECG) monitoring during observation because of the potential for systemic effects.

Therapeutic Uses of Borenar

Borenar (Bilastine) is commonly used across therapeutic domains involving symptoms related to physical discomfort and distress caused by the body's allergic response. It provides supportive relief in clinical settings marked by heightened symptoms that interfere with daily functioning and overall comfort.


Managing Allergic Symptoms and Hives

This medication may be used in conditions characterized by periods of heightened symptoms, specifically for the symptomatic management of allergic rhinoconjunctivitis (both hay fever and perennial forms) and urticaria (hives). Borenar helps address the disruptive symptom clusters of sneezing, runny nose, nasal congestion, itchy eyes, and the intense pruritus (itching) and wheals associated with skin reactions.

The main therapeutic purpose is to help manage these acute and recurrent manifestations. Borenar supports the patient during difficult episodes by easing distress. This use contributes to improved day-to-day comfort during symptomatic periods and may assist with the temporary functional strain on the patient.

Quick Fact: Symptom Support for Allergic Reactions
Primary Focus Symptoms related to inflammatory or irritative states
Key Benefit Contributes to easing the overall symptom load
Use Context Applied in clinical settings that involve acute or unstable symptom patterns

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Borenar (Bilastine) — Official Regulatory Information

The following statements reflect the official population eligibility and non-eligibility rules documented by governmental regulatory authorities.


Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is contraindicated Patients with known hypersensitivity to bilastine or any ingredient in the formulation. Patients with a history of QT prolongation and/or torsade de pointes (a type of abnormal heart rhythm).
Populations for whom use is allowed Adults and adolescents 12 years of age and over. Children 6 to 11 years of age with a body weight of at least 20 kg (using the specific 10 mg formulation).
Age-related eligibility rules Children under 6 years of age are generally not recommended for use. Use is not established in children under 2 years. Older adults (ge 65 years) require no dosage adjustments.
Condition-specific eligibility rules Adults with Renal Impairment and Adults with Hepatic Impairment require no dosage adjustments.
Pregnancy and lactation eligibility status Pregnancy: Preferable to avoid use as a precautionary measure due to limited data. Lactation: Decision must be made to discontinue breast-feeding or discontinue therapy.
Eligibility-related restrictions Co-administration with certain P-glycoprotein inhibitors should be avoided in adult patients with moderate or severe renal impairment.

Resulting Eligibility Structure

The regulatory documents establish absolute contraindications for those with hypersensitivity or a history of specific cardiac rhythm issues (QT prolongation). Approved use is clearly segmented by age thresholds, allowing use in adults, adolescents, and specific pediatric groups (6–11 years, ge 20 kg). The labeling confirms that no dosage adjustments are required for older adults or adult patients with renal or hepatic impairment. However, use is conditionally restricted during pregnancy and lactation, and caution is mandatory regarding co-administration with P-gp inhibitors in the presence of moderate or severe renal impairment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

This information reflects the officially documented interaction profile of Borenar (Bilastine) as stated in government regulatory documents.

Category Official Regulatory Information
Medicinal product categories with documented interactions P-glycoprotein (P-gp) inhibitors, QTc-prolonging drugs, and substances/food that interfere with uptake transporters.
Specific interacting medicines (if explicitly listed) Ketoconazole, Erythromycin, Diltiazem, Cyclosporine, Ritonavir, and fruit juices.
Mechanistic basis of interactions (only if stated in label) Transporter-mediated (Bilastine is a substrate for the efflux transporter P-gp and the uptake transporter OATP1A2). Lack of interaction with the CYP450 enzyme system.
Population-specific interaction notes (if applicable) Co-administration with P-gp inhibitors must be avoided in patients with moderate or severe renal impairment.

Official Interaction Statements

  • Co-administration with P-gp inhibitors like Ketoconazole or Erythromycin increases Bilastine exposure (AUC and Cmax) by two- to three-fold.
  • Intake with food or fruit juices reduces Bilastine oral bioavailability and systemic exposure by 30% or more.
  • Concurrent use with other QTc-prolonging drugs is not recommended.
  • Pharmacodynamic studies confirm that Bilastine does not potentiate the CNS depressant effects of alcohol or Lorazepam.

The regulatory documents define this product’s interaction structure primarily through transporter-mediated effects that alter systemic exposure. The profile notes Bilastine is significantly affected by P-gp inhibitors and food/juice, with a specific restriction mandating the avoidance of P-gp inhibitors in individuals with moderate or severe renal impairment. Official information also includes a formal caution regarding co-administration with other QTc-prolonging drugs and confirms a low risk of metabolic or CNS-depressant interactions.

Mechanism of Action

Borenar (Bilastine) is a histamine antagonist that primarily targets and interacts with the peripheral Histamine H1 receptor ( H1).

The drug functions as a selective antagonist at the H1 receptor, competitively preventing the binding and subsequent activation of the receptor by endogenous histamine released from mast cells and basophils. It exhibits negligible binding affinity for muscarinic or other peripheral receptors.

Intracellularly, this inhibition stabilizes the H1 receptor in an inactive conformation. This action modulates the signaling cascade that would normally be initiated by histamine, blocking the Gq protein-mediated pathway that leads to the activation of phospholipase C and a subsequent increase in intracellular Ca^2+ levels.

The resulting downstream molecular consequence is the suppression of cellular responses mediated by H1 receptor activation in target tissues, including the endothelium and smooth muscle. This modulation leads to a systemic decrease in vasodilation, reduction of capillary permeability, and attenuation of the local inflammatory signaling cascade triggered by histamine release.

Dosage and Administration Information

How to Use Borenar (Bilastine)

Borenar, which contains the active substance Bilastine, is intended solely for oral administration and is available in forms such as a standard tablet and an orodispersible tablet. The usage pattern is structurally defined by official dosing instructions that standardize intake across different populations.


Official Dosing and Frequency

The standard regimen for Borenar is once daily (a single intake per 24-hour period). Dosing is stratified by age group:

Population Standard Daily Dose
Adults and Adolescents (12 years and over) 20 mg Bilastine
Pediatric Patients (6 to 11 years) 10 mg Bilastine (generally for children ≥ 20 kg)

No dose adjustment is required for patients with renal impairment, hepatic impairment, or those who are considered older adults (geriatric patients).


Critical Administration Conditions

To ensure proper absorption, Borenar must be administered on an empty stomach. The official instruction states that the medicine should be taken either one hour before a meal or two hours after a meal. Furthermore, Bilastine should not be taken with fruit juice (including grapefruit, apple, or grape juice), as these beverages can alter the intended absorption of the drug; the tablet should be swallowed with water.

Treatment duration is variable and determined by the nature of the condition, ranging from use only during symptomatic periods (e.g., seasonal allergic rhinoconjunctivitis) to potentially continuous administration for chronic conditions (e.g., urticaria). If a dose is missed, it is advised to continue with the next scheduled dose at the usual time and not taking a double dose to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trial Findings

Research protocols have explored whether the treatment is associated with reported changes in inflammation and pain in participants with chronic inflammatory conditions. Trial findings documented whether there was a sustained change in symptoms across the study period.

  • In Phase 3 trials, the investigational drug was evaluated for its potential to affect joint function. Findings suggested an association with reported improvement within the first 4 weeks of the research.
  • Trial reports indicated that the drug was examined for its association with reduced morning stiffness in a majority of study participants.

Research and Study Design

Study protocols examined the active compound's activity in laboratory models. Research also evaluated whether the combination is associated with changes in absorption of the active compound when compared to the compound alone.

  • Research reports suggest that the drug was studied for its effect on specific inflammatory markers. Study reports indicated an observed change in levels of specific markers in participants.
  • Research included studies to explore the drug's activity in animal models.

Ongoing Research and Data Availability

Clinical trials explored the drug as a treatment option, with research protocols examining its use across different case types, including those categorized as severe. This research often includes comparisons to older treatments.

  • Research reports documented the difference in reported participant experiences between the treatments, focusing on side effects and tolerability.
  • Overall, data on the long-term safety of the drug is still being gathered and investigated in ongoing post-marketing surveillance studies.

Key Studies & References

  1. The effects of bromelain on osteoarthritis symptoms: A systematic review
  2. Seven-Year Safety Review Confirms Brodalumab's Steady Risk Profile in US Postmarketing Surveillance
  3. The Use of Botulinum Toxin for the Treatment of Chronic Joint Pain: Clinical and Experimental Evidence

Frequently Asked Questions (FAQ)

Common questions about Borenar (FAQ)

Q: Is Borenar the same type of medicine as [similar drug name]?

A: Borenar contains the active ingredient Bilastine, which is classified in regulatory documents as a second-generation antihistamine and a selective H1-receptor antagonist. This type of drug is designed to have a low tendency to cross the blood-brain barrier, which contributes to its profile when compared to older classes of antihistamines.

Q: How quickly should Borenar start working?

A: Studies on Bilastine indicate that the onset of action—the time it takes for the drug to begin working—is approximately 1 hour after administration. Official information from clinical trials suggests that symptom improvement for conditions like seasonal allergies or hives was often evaluated over a period of 2 to 4 weeks.

Q: Is there evidence showing Borenar is effective for [condition it treats]?

A: According to official regulatory decision summaries, Bilastine is indicated for the symptomatic treatment of Seasonal Allergic Rhinitis (SAR), which is commonly known as hayfever, and for Chronic Spontaneous Urticaria (CSU), which refers to persistent hives and itching. This information confirms the drug's official approved uses.

Q: Is Borenar safe for people who have kidney issues?

A: Official product information states that no dosage adjustment is required for adult patients with renal (kidney) impairment alone. However, a specific restriction in the regulatory documents notes that co-administration with P-glycoprotein inhibitors should be avoided in patients with moderate or severe kidney impairment. This specific restriction is detailed in regulatory documents.

Q: What does the research say about Borenar's use in children?

A: Official regulatory documents indicate that efficacy data from studies in adults and adolescents is used to define the drug's approved use in children aged 6 to 11 years within the approved dosing regimen. Clinical trials in this pediatric group have shown that related adverse events occurred with a frequency comparable to those seen in the placebo group.

Q: Are there any restrictions on driving or operating machinery while on Borenar?

A: Official patient information often states that while the medicine is unlikely to affect a person's ability to drive or operate machinery, caution is still necessary. Patients who notice that they experience tiredness (somnolence) or dizziness after taking Borenar are advised in the official patient information that they should avoid engaging in these activities.

Q: Why is Borenar prescribed instead of other available medicines?

A: Bilastine is characterized in regulatory documents as a non-sedating second-generation H1-antihistamine with high selectivity. This profile, along with its low propensity to cross the blood-brain barrier, contributes to the drug's overall profile, as described in regulatory documents.

Q: Is Borenar suitable for people with heart conditions?

A: Regulatory information establishes that Bilastine is contraindicated (should not be used) in patients with a history of QT prolongation or a specific type of abnormal heart rhythm called Torsade de Pointes. Official information states that the drug must be used with caution in individuals who are at increased risk of QTc-prolongation or who have a history of other cardiac arrhythmias.

Q: What is Borenar's safety classification?

A: The drug's safety is defined by its known risks and patient population rules outlined in regulatory documents. Use during pregnancy is not recommended as a precautionary measure due to limited data. The most serious risks are established by its contraindication for patients with a history of QTc prolongation or Torsade de Pointes.

Q: Is it normal to feel no change after starting Borenar?

A: Yes, it is possible. The onset of action is approximately 1 hour after taking a dose. However, the full symptom improvement observed in clinical studies for conditions like chronic hives or seasonal allergies was often tracked over a period of up to 4 weeks. A healthcare provider should be consulted if there are concerns about the lack of expected effect.

Q: What are the official clinical trials supporting Borenar?

A: The drug's official approvals are supported by clinical data, primarily from Phase 3 trials, which evaluated its use in conditions like Seasonal Allergic Rhinitis and Chronic Spontaneous Urticaria. Furthermore, data on long-term safety is gathered through open-label extension studies and post-marketing surveillance.

Q: What is the risk of a severe allergic reaction to Borenar?

A: A known hypersensitivity (severe allergic reaction) to Bilastine or any ingredient in its formulation is listed as a contraindication in regulatory documents, meaning the medicine should not be used by individuals with this history. While the frequency of severe reactions is not listed in common/uncommon side effect tables, this risk is addressed by the drug’s official contraindications.

Q: Does Borenar cause weight changes?

A: According to official regulatory patient information, an increase in weight has been reported as an uncommon side effect of Borenar. The official safety profile provides a frequency classification for effects.

Q: Is Borenar gluten-free or lactose-free?

A: Information found in regulatory review documents indicates that the product formulation may contain lactose as an inactive ingredient. Individuals with specific dietary concerns may wish to review the full official ingredient list.

Q: How is Borenar excreted from the body?

A: Pharmacokinetic studies detailed in regulatory documents show that Bilastine is mainly excreted largely unchanged. The majority of the drug leaves the body in the faeces (66.5%), with a smaller percentage found in the urine (28.3%).

How should Borenar be stored and disposed of?

Borenar (Bilastine) must be stored and disposed of according to specific conditions detailed in the official regulatory labeling.

Storage Conditions

Borenar must be stored at controlled room temperature, specifically between 68°F and 77°F (20°C and 25°C). The medicine is required to be kept in its original container to protect it from light and moisture. To prevent access, Borenar must be kept out of the sight and reach of children.

Disposal Instructions

Any unused or expired Borenar must be disposed of as directed by a healthcare provider or pharmacist. The official disposal protocol strongly recommends using a drug take-back program if one is available. If a take-back program is not accessible, the product must be mixed with an undesirable substance, placed in a sealed container, and discarded in the household trash. The medicine must not be flushed down the toilet or poured into a drain unless specific instruction is provided.

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

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