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Introduction to Blexten


Blexten, known by its generic name Bilastine, is a modern antihistamine medication used primarily to manage and alleviate symptoms associated with seasonal allergies and certain allergic skin conditions. As a newer generation antihistamine, Blexten is designed to offer relief from allergic symptoms while minimizing side effects such as drowsiness, which are commonly associated with older antihistamines.

Classification and Action

Bilastine, the active ingredient in Blexten, belongs to the class of medications known as antihistamines. It functions by effectively blocking the actions of histamine, a natural chemical in the body. Histamine plays a significant role in allergic reactions, and its effects can lead to symptoms like sneezing, itching, runny nose, and watery eyes. By inhibiting histamine’s action, Blexten helps in reducing these uncomfortable symptoms.

Primary Uses

Blexten is primarily prescribed for the treatment of symptoms related to seasonal allergic rhinitis (hay fever), such as sneezing, itchy and runny nose, red and watery eyes, and other related discomforts. It is also effective in managing symptoms of other allergic conditions like chronic urticaria (hives), providing relief from persistent itching and skin rashes. The medication is suitable for use in adults and children over the age of four years who weigh at least 16 kilograms.

Advantages of Blexten

One of the key advantages of Blexten over some other antihistamines is its non-sedative nature, meaning it does not typically cause drowsiness or impair cognitive functions. This makes it a favorable option for individuals who need to maintain alertness and focus in their daily activities while managing their allergy symptoms. Additionally, the effects of Blexten are rapid, with symptom relief often noticed within an hour of ingestion, and the benefits can last for approximately 24 hours, providing all-day comfort.

What is Blexten (Bilastine)?

Detailed Description of Blexten

Blexten, with its active ingredient Bilastine, is a contemporary antihistamine medication that has gained prominence for its efficacy in treating allergic symptoms. As a second-generation antihistamine, it is specifically engineered to target and block the histamine receptors in the body without crossing the blood-brain barrier. This unique property significantly reduces the risk of central nervous system side effects, such as drowsiness, which are more common with first-generation antihistamines.

Mechanism of Action

The primary mechanism of action of Blexten lies in its ability to inhibit the activity of histamine, a compound that the body releases during allergic reactions. Histamine binds to its receptors (H1 receptors) in various parts of the body, leading to symptoms associated with allergies. By selectively blocking these H1 receptors, Blexten prevents histamine from triggering allergic responses, thereby alleviating symptoms like nasal congestion, sneezing, itching, swelling, and redness.

Conditions Treated

Blexten is most commonly used for the treatment of seasonal allergic rhinitis, a condition characterized by an allergic response to pollen and other airborne allergens prevalent during specific times of the year. Symptoms can include sneezing, itchy and runny nose, and itchy, watery eyes. Additionally, Blexten is effective in treating chronic idiopathic urticaria, a form of hives with an unknown cause, marked by itchy, red welts on the skin that can be painful and persistent.

Advantages in Allergy Management

Blexten stands out for its rapid onset of action, with its effects typically noticeable within one hour of administration. This quick response time is particularly beneficial for individuals seeking prompt relief from acute allergic symptoms. Furthermore, the long-lasting effect of Blexten, which can extend up to 24 hours, provides convenient once-daily dosing. This not only enhances patient compliance but also ensures consistent symptom control throughout the day.

Safety Profile

Blexten’s safety profile is well-established, with clinical trials and post-marketing experiences indicating a low incidence of adverse effects. Its non-sedative characteristic is particularly noteworthy, as it allows individuals to carry on with their daily activities, including driving and operating machinery, without the concern of drowsiness or impaired cognitive function.

Key Information About Blexten

Indications for Use

Blexten is indicated for the relief of symptoms associated with allergic rhinitis (such as seasonal and perennial allergies) and urticaria (hives). It is suitable for adults and children aged 4 years and older who weigh at least 16 kg. The medication is particularly recommended for those seeking an effective solution for allergy symptoms without the sedative effects commonly associated with older antihistamines.

Onset of Action and Duration

One of the notable features of Blexten is its rapid onset of action. The relief from allergy symptoms can be observed as early as one hour after oral administration. This prompt response is crucial for those seeking immediate relief from acute allergic reactions. Additionally, the effects of Blexten are long-lasting, with its efficacy extending up to 24 hours. This prolonged action ensures consistent symptom control with a convenient once-daily dosing regimen.

Available Forms and Strengths

Blexten is available in various forms to cater to different age groups and preferences:

  • Tablets: The standard form is the tablet, typically available in a 20 mg dosage. This form is ideal for adults and children over 12 years of age.
  • Oro-Dispersible Tablets: These tablets are designed to dissolve quickly in the mouth, making them a suitable option for children or individuals who have difficulty swallowing pills. They are generally available in a 10 mg dosage.
  • Oral Solution: For younger children or those who prefer liquid medication, Blexten is available in an oral solution. This form allows for flexible dosing and is particularly useful for precise dosing in children.

Administration Guidelines

Blexten should be taken with water and on an empty stomach for optimal absorption and effectiveness. It is recommended to take the medication at least one hour before or two hours after meals. The specific timing of administration is crucial, as food can affect the absorption of Bilastine, potentially reducing its efficacy.

Special Considerations

While Blexten is a safe and effective medication for many individuals, certain populations should exercise caution:

  • Patients with Renal Impairment: Those with kidney problems should consult their healthcare provider before taking Blexten, as dose adjustments may be necessary.
  • Pregnant and Breastfeeding Women: The safety of Blexten in pregnant or breastfeeding women has not been fully established. It is essential to discuss the risks and benefits with a healthcare provider before using this medication.

How to Use Blexten

Dosage Information

Adults and Children Over 12 Years

The recommended dose for adults and children aged 12 years and older is one 20 mg tablet taken once daily.

Children Aged 4 to 11 Years

For younger children, the recommended dose is 10 mg once daily. This can be administered as either an oro-dispersible tablet or oral solution, depending on the child’s preference and ability to swallow tablets.

Administration Instructions


The tablet should be swallowed whole with water and should not be chewed or crushed. It is best taken on an empty stomach, either one hour before or two hours after meals.

Oro-Dispersible Tablets

These tablets should be placed on the tongue and allowed to dissolve before swallowing. They can also be dissolved in a small amount of water and then consumed.

Oral Solution

The oral solution should be measured accurately using the provided measuring cup. It is also recommended to be taken on an empty stomach.

Missed Dose and Overdose

Missed Dose

If a dose is missed, it should be taken as soon as remembered. However, if it is nearly time for the next scheduled dose, skip the missed dose and resume the regular dosing schedule. Do not double the dose to catch up.


In case of an overdose, contact a healthcare provider or emergency services immediately. Symptoms of an overdose may include drowsiness, confusion, or rapid heart rate.


Blexten should be stored at room temperature, away from light and moisture. Keep the medication out of reach of children and pets. Do not use Blexten past its expiration date. Dispose of expired or unused medication properly, following guidelines to avoid environmental contamination.

Who Should Not Take Blexten


Allergy to Bilastine

Individuals who have an allergy to Bilastine or any other components of Blexten are advised not to take this medication. An allergic reaction to the active ingredient or any of the inactive components can lead to serious health complications.

Certain Heart Conditions

Patients with a history of irregular heart rhythm, including conditions such as torsade de pointes and congenital long QT syndromes, should avoid using Blexten. The medication may exacerbate these conditions, leading to potentially serious cardiac events.

Precautions for Specific Populations

Pregnant Women

The safety of Blexten during pregnancy has not been fully established. Therefore, pregnant women should consider using Blexten only if the potential benefits to the mother justify the potential risks to the fetus. It is important to weigh the benefits and risks carefully before deciding to use this medication during pregnancy.

Breastfeeding Mothers

It is currently unknown whether Blexten passes into breast milk. Consequently, nursing mothers should exercise caution and consult their healthcare provider before using Blexten to understand the potential risks to the nursing infant.

Children Under 4 Years or Weighing Less Than 16 kg

The safety and effectiveness of Blexten in children under the age of 4 years or in those weighing less than 16 kg have not been established. Due to the lack of sufficient data, the use of Blexten in this population is not recommended.

Special Considerations

Renal Impairment

Patients with kidney problems should have a discussion with their doctor before taking Blexten. Depending on the severity of renal impairment, dose adjustments may be necessary to avoid potential side effects or reduced efficacy of the medication.

Elderly Patients

While no specific issues related to the use of Blexten in elderly patients have been reported, it is advisable for such patients to use this medication with caution. This is particularly important considering the greater frequency of decreased hepatic, renal, or cardiac function in the elderly population, as well as the potential for concomitant disease or other drug therapy. Elderly patients should be monitored closely for any adverse reactions or drug interactions.

Blexten Side Effects

Common Side Effects

While Blexten is generally well-tolerated, some individuals may experience side effects. Common side effects, which usually are mild and transient, include:

  • Diarrhea: A digestive disturbance that may occur as the body adjusts to the medication.
  • Eye Irritation: Manifesting as redness or itchiness in the eyes.
  • Fatigue: Feelings of tiredness or lethargy, although less common with Blexten compared to first-generation antihistamines.
  • Headache: Mild to moderate headaches may be experienced by some users.
  • Nasal Irritation: Including symptoms like a runny or stuffy nose.
  • Nausea: A feeling of unease in the stomach, sometimes accompanied by an urge to vomit.
  • Stomach Pain: Discomfort or pain in the abdominal area.

Serious Side Effects

While rare, some individuals may experience more severe side effects. Immediate medical attention should be sought if any of the following occur:

  • Dry Skin or Eczema: Unusual changes in skin texture or outbreaks of eczema.
  • Fainting: Sudden loss of consciousness or lightheadedness.
  • Heart Problems: Symptoms such as fast or irregular heartbeat, chest pain, sudden weight gain, difficulty breathing, or leg swelling.
  • Allergic Reactions: Signs of a serious allergic reaction include abdominal cramps, difficulty breathing, nausea and vomiting, or swelling of the face, lips, and throat.

Managing Side Effects

  • If side effects are mild, they may resolve on their own as the body adjusts to the medication.
  • For persistent or bothersome side effects, consult a healthcare provider for advice on management strategies.
  • In the case of severe or alarming symptoms, seek immediate medical attention.

Drug Interactions and Precautions with Blexten

Blexten, like many medications, can interact with other drugs, which may impact its effectiveness or increase the likelihood of side effects. These interactions are particularly notable with certain types of medications.

Interaction with Other Antihistamines

When Blexten is used alongside other antihistamines, there’s an increased risk of experiencing heightened drowsiness or other related side effects. This combination can intensify the sedative properties inherent in antihistamines.

Alcohol and Blexten

The consumption of alcohol while taking Blexten can enhance its sedative effects. This is a crucial consideration, as even non-sedating antihistamines like Blexten can have their drowsiness-inducing effects amplified by alcohol.

Blexten and Prescription Medications

Certain prescription drugs, including specific antibiotics, antifungals, and antivirals, can alter the way Blexten is metabolized in the body. This interaction can lead to changes in the effectiveness of Blexten or an increase in side effects.

Precautions When Using Blexten

Drowsiness and Reduced Alertness

Although Blexten is less likely to cause drowsiness compared to older antihistamines, it can still induce drowsiness or reduced alertness in some individuals. Caution is advised in activities that require full alertness, such as driving or operating machinery.

Heart Rhythm Considerations

Individuals with a history of heart rhythm problems should use Blexten with caution. In some cases, Blexten can cause changes in heart rhythm, necessitating careful monitoring, especially under medical supervision.

Impact on Kidney Function

For patients with compromised kidney function, Blexten’s processing in the body may be affected. It’s important for these patients to consult with their healthcare provider to determine the appropriate dosage and to monitor for any potential issues.

Special Monitoring Requirements

Regular Medical Check-Ups

Patients with existing health conditions or those on concurrent medication therapies should undergo regular medical check-ups. These check-ups help in monitoring Blexten’s effectiveness and in identifying any adverse side effects early.

Heart Rhythm Monitoring

In rare instances, particularly for patients with pre-existing heart conditions, heart rhythm monitoring might be recommended upon the initiation of Blexten treatment. This precautionary measure ensures that Blexten does not adversely affect the cardiac rhythm.

Medication Price & Coupons

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By opting to order Blexten through Pharma Giant, customers can obtain this vital allergy medication at a more affordable price, without compromising on quality. This service is particularly advantageous for those who are not covered by insurance and are seeking effective ways to manage their healthcare costs.

Frequently Asked Questions

Blexten is used to treat symptoms of seasonal allergic rhinitis and chronic urticaria (hives).

Blexten works by blocking the action of histamine, a substance in the body that causes allergic symptoms.

Yes, Blexten is a second-generation antihistamine, which is generally considered non-drowsy.

Yes, Blexten is suitable for children aged 4 years and older who weigh at least 16 kg.

Blexten should be taken with water on an empty stomach, either one hour before or two hours after meals.

Common side effects include diarrhea, eye irritation, fatigue, headache, nasal irritation, nausea, and stomach pain.

Consult your healthcare provider before taking Blexten if you are pregnant or breastfeeding.

Blexten is less likely to cause drowsiness, but it’s best to know how it affects you before driving or operating machinery.

The effects of Blexten can be noticed as early as one hour after taking the medication.

The effects of Blexten can last up to 24 hours.

It’s advisable to avoid alcohol as it can enhance the sedative effects of antihistamines.

If you miss a dose, take it as soon as you remember, but skip it if it’s almost time for your next dose.

Yes, certain medications can interact with Blexten. Consult your healthcare provider for a complete list.

Yes, Blexten can be used for long-term management of allergies, but consult your healthcare provider for advice.

Yes, Blexten is effective in treating symptoms of allergic skin conditions like chronic hives.

Store Blexten at room temperature, away from light and moisture.

It’s not recommended to take Blexten with other antihistamines without consulting a healthcare provider.

In case of an overdose, seek immediate medical attention.

Blexten can cause changes in heart rhythm in susceptible individuals. Those with a history of heart rhythm problems should use it cautiously.

Patients with kidney issues should consult their healthcare provider before taking Blexten, as dose adjustments may be necessary.