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ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS

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About the medicine

How to use ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS

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This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Package Leaflet: Information for the Patient

Astrilax Flas 20 mg Orodispersible Tablets

bilastine

Read this package leaflet carefully before you start taking this medicine because it contains important information for you.

Follow exactly the administration instructions of the medicine contained in this package leaflet or as indicated by your doctor or pharmacist.

  • Keep this package leaflet, you may need to read it again.
  • If you need advice or more information, consult your doctor or pharmacist.
  • If you experience side effects, consult your doctor or pharmacist, even if they are not listed in this package leaflet. See section 4.
  • You should consult your doctor if it worsens or does not improve after 7 days.

Contents of the Package Leaflet

  1. What is Astrilax Flas and what is it used for
  2. What you need to know before taking Astrilax Flas
  3. How to take Astrilax Flas
  4. Possible side effects
  5. Storage of Astrilax Flas
  6. Package Contents and Additional Information

1. What is Astrilax Flas and what is it used for

Astrilax Flas contains bilastine as the active substance, which is an antihistamine.

Astrilax Flas is used to relieve the symptoms of allergic rhinoconjunctivitis (sneezing, nasal itching, nasal discharge, nasal congestion, and red and itchy eyes) and other forms of allergic rhinitis with mild symptoms, in adults and adolescents from 12 years of age. It can also be used to treat skin eruptions with itching (hives or urticaria).

You should consult a doctor if it worsens or does not improve after 7 days.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before taking Astrilax Flas

Do not take Astrilax Flas

If you are allergic to bilastine or any of the other components of this medicine (listed in section 6).

Warnings and Precautions

Consult your doctor or pharmacist before starting to use this medicine if you have moderate or severe kidney impairment, low blood potassium, magnesium, calcium levels, if you have or have had heart rhythm problems or if your heart rate is very low, if you are taking medicines that may affect heart rhythm, if you have or have had a certain abnormal heart rhythm pattern (known as QTc interval prolongation in the electrocardiogram) that may occur in some types of heart diseases and are also taking other medicines (see "Use of Astrilax Flas with other medicines").

If you experience symptoms such as difficulty breathing, abdominal pain, nausea, vomiting, diarrhea, dizziness, fainting, you should seek urgent assistance due to the risk of anaphylaxis.

Children

Do not administer this medicine to children under 12 years of age

Do notexceed the recommended dose. If symptoms persist, consult your doctor.

Other medicines and Astrilax Flas

Inform your doctor or pharmacist if you are taking, have recently taken, or may need to take any other medicine, including those obtained without a prescription.

In particular, please discuss with your doctor if you are taking any of the following medicines:

  • Ketoconazole (a medicine to treat Cushing's syndrome when the body produces an excess of cortisol)
  • Erythromycin (an antibiotic)
  • Diltiazem (to treat pain or pressure in the chest area - angina pectoris)
  • Ciclosporin (to reduce the activity of your immune system, to prevent transplant rejection or reduce the activity of autoimmune diseases and allergic disorders, such as psoriasis, atopic dermatitis, or rheumatoid arthritis)
  • Ritonavir (to treat HIV)
  • Rifampicin (an antibiotic)

Taking Astrilax Flas with food, drinks, and alcohol

These orodispersible tablets should notbe taken with foodor withgrapefruit juice or other fruit juices, as this would decrease the effect of bilastine. To avoid this, you can:

  • take the orodispersible tablet and wait one hour before eating or taking fruit juices, or

Bilastine, at the recommended dose (20 mg), does not increase the drowsiness produced by alcohol.

Pregnancy, breastfeeding, and fertility

There are no data or limited data on the use of bilastine in pregnant women, during the lactation period, or on its effects on fertility.

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.

Consult your doctor or pharmacist before using any medicine.

Driving and using machines

It has been shown that Astrilax Flas 20 mg does not affect performance during driving in adults. However, each patient's response to the medicine may be different. Therefore, check how this medicine affects you before driving or using machines.

Astrilax Flas contains sodium and ethanol

This medicine contains less than 1 mmol of sodium (23 mg) per orodispersible tablet; this is, essentially "sodium-free".

This medicine contains 0.0030 mg of alcohol (ethanol) in each orodispersible tablet, which is equivalent to 1.6 mg/100 g (0.0016% w/w). The amount of alcohol in a 185 mg orodispersible tablet is equivalent to less than 1 ml of beer or 1 ml of wine.

The small amount of alcohol in this medicine does not produce any noticeable effect.

3. How to take Astrilax Flas

Follow exactly the administration instructions of the medicine contained in this package leaflet or as indicated by your doctor or pharmacist. In case of doubt, ask your doctor or pharmacist.

The recommended dose in adults, including elderly patients and adolescents from 12 years of age, is 1 orodispersible tablet (20 mg of bilastine) per day.

  • The orodispersible tablet is for oral use.
  • Please place the orodispersible tablet in the mouth. It will disperse rapidly in the saliva and can then be swallowed easily.
  • Alternatively, you can disperse the orodispersible tablet in water before taking it.
  • You should use only water for dispersion,do not use grapefruit juice or any other fruit juice.
  • The orodispersible tablet should be taken one hour before or two hours after taking any food or fruit juice (see section 2, "Taking Astrilax Flas with food, drinks, and alcohol").

You should consult a doctor if it worsens or does not improve after 7 days.

Use in children

For children from 6 to 11 years of age with a minimum body weight of 20 kg, there are other pharmaceutical forms more suitable - bilastine 10 mg orodispersible tablets or bilastine 2.5 mg/ml oral solution -, consult your doctor or pharmacist.

Do not administer bilastine to children under 6 years of age with a body weight below 20 kg as there are not enough data.

If you take more Astrilax Flas than you should

If you or anyone else has taken more than the recommended dose of this medicine, inform your doctor immediatelyor go to the emergency department of the nearest hospital. Please remember to bring this medicine package or this package leaflet with you.

In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or call the Toxicology Information Service, phone: 91 562 04 20, indicating the medicine and the amount ingested.

If you forget to take Astrilax Flas

Do not take a double dose to make up for a forgotten dose.

If you forget to take your dose, take it as soon as possible, and then return to your usual dosing schedule.

If you have any other questions about the use of this medicine, ask your doctor or pharmacist.

If you stop taking Astrilax Flas

Generally, no effects will appear after stopping this treatment.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

If you experience allergic reactions whose symptoms can include difficulty breathing, dizziness, fainting, or loss of consciousness, swelling of the face, lips, tongue, or throat, and/or swelling and redness of the skin, stop taking this medicine and go to your doctor immediately.

Other side effects that may occur in adults and adolescents are:

Common: may affect up to 1 in 10 people

  • Headache,
  • drowsiness.

Uncommon: may affect up to 1 in 100 people

  • Electrocardiogram changes,
  • blood tests showing changes in liver function,
  • dizziness,
  • stomach pain,
  • fatigue,
  • increased appetite,
  • irregular heartbeat,
  • weight gain,
  • nausea (feeling sick),
  • anxiety,
  • dry or irritated nose,
  • abdominal pain,
  • diarrhea,
  • gastritis (inflammation of the stomach lining),
  • vertigo (a feeling of dizziness or instability),
  • feeling of weakness,
  • thirst,
  • shortness of breath,
  • dry mouth,
  • indigestion,
  • itching,
  • cold sores,
  • fever,
  • tinnitus (ringing in the ears),
  • difficulty sleeping,
  • blood tests showing changes in kidney function,
  • increased blood fats.

Frequency not known: cannot be estimated from the available data

  • Palpitations (feeling the heartbeat),
  • tachycardia (fast heartbeat),
  • vomiting.

Side effects that may occur in children:

Common: may affect up to 1 in 10 people

  • Rhinitis (nasal irritation),
  • allergic conjunctivitis (eye inflammation due to an allergic reaction),
  • headache,
  • stomach pain (abdominal pain/upper abdominal pain).

Uncommon: may affect up to 1 in 100 people

  • Eye irritation,
  • dizziness,
  • loss of consciousness,
  • diarrhea,
  • nausea (feeling sick),
  • lip swelling,
  • eczema,
  • urticaria (hives),
  • fatigue.

Reporting of side effects

If you experience any side effects, consult your doctor or pharmacist, even if they are not listed in this package leaflet. You can also report them directly through the Spanish Medicines Monitoring System: www.notificaRAM.es

By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Astrilax Flas

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiration date stated on the package and blister after EXP. The expiration date is the last day of the month indicated.

This medicine does not require special storage conditions.

Medicines should not be disposed of via wastewater or household waste. Place the medicine packages and medicines you no longer need in the SIGRE collection point at the pharmacy. If in doubt, ask your pharmacist how to dispose of medicine packages and medicines you no longer need. This will help protect the environment.

6. Package Contents and Additional Information

Composition of Astrilax Flas

The active substance is bilastine. Each orodispersible tablet contains 20 mg of bilastine.

The other ingredients are mannitol (E421), croscarmellose sodium, sodium stearyl fumarate, and sucralose (E955), red grape flavor (main components: gum arabic, ethyl butyrate, triacetin, methyl anthranilate, ethanol, d-limonene, linalool).

Appearance of the product and package contents

Astrilax Flas 20 mg orodispersible tablets are round, flat, white, engraved with "20" on one side, and 8 mm in diameter.

Astrilax Flas 20 mg orodispersible tablets are available in single-dose precut blisters of 7x1, 10x1, 14x1, 20x1 orodispersible tablets.

Not all pack sizes may be marketed.

Marketing Authorization Holder

Faes Farma, S.A.

Autonomia Etorbidea, 10

48940 Leioa (Bizkaia)

Spain

Manufacturer

Faes Farma, S.A.

Maximo Agirre Kalea, 14

48940 Leioa (Bizkaia)

Spain

Or

Faes Farma, S.A.

Parque Científico y Tecnológico de Bizkaia

Ibaizabal Bidea, Edificio 901

48160 Derio (Bizkaia)

Spain

This medicine is authorized in the Member States of the European Economic Area under the following names:

Germany: Alergolaxten 20 mg Schmelztabletten

Spain: Astrilax Flas 20 mg orodispersible tablets

Portugal: Astrilax Odis 20 mg orodispersible tablet

Date of the last revision of this package leaflet:June 2025

Detailed information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) (http://www.aemps.gob.es/)

Online doctors for ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS

Discuss questions about ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Maria Martelli

Anaesthesiology 12 years exp.

Dr Maria Martelli is a medical doctor specialising in anaesthesiology and pain medicine. She provides online consultations for adults, focusing on the assessment and management of acute, chronic, and complex pain conditions, as well as supportive care in serious illness. She graduated from the Medical University of Silesia in Katowice and completed her specialisation in Anaesthesiology and Intensive Care. Alongside hospital work, she has extensive experience in home and inpatient hospice care, supporting patients with severe pain and advanced disease. Since 2021, she has been a certified specialist and continues to work in anaesthesiology, intensive care, and pain treatment. Patients consult her for: 

  • Chronic pain lasting more than 3 months (musculoskeletal, neuropathic, mixed pain).
  • Acute pain requiring medical assessment and treatment planning.
  • Post-operative pain and recovery support.
  • Cancer-related pain and symptom relief.
  • Palliative care support and quality-of-life improvement.
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  • Second opinions for complex or treatment-resistant pain.

Dr Martelli takes a structured, evidence-based approach, carefully analysing symptoms, previous treatments, and overall health status. Her consultations focus on realistic pain control goals, safety of therapy, and improving daily functioning. She is especially attentive to patients living with long-term pain or serious illness, providing clear explanations, compassionate guidance, and medically sound recommendations adapted to each individual situation.

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Lina Travkina

Family medicine 13 years exp.

Dr. Lina Travkina is a licensed family and preventive medicine doctor based in Italy. She provides online consultations for adults and children, supporting patients across all stages of care – from acute symptom management to long-term health monitoring and prevention.

Areas of medical care include:

  • Respiratory conditions: colds, flu, acute and chronic bronchitis, mild to moderate pneumonia, bronchial asthma.
  • ENT and eye conditions: sinusitis, tonsillitis, pharyngitis, otitis, infectious and allergic conjunctivitis.
  • Digestive issues: gastritis, acid reflux (GERD), IBS, dyspepsia, bloating, constipation, diarrhoea, functional bowel symptoms, intestinal infections.
  • Urological and infectious diseases: acute and recurrent cystitis, bladder and kidney infections, prevention of recurrent UTIs, asymptomatic bacteriuria.
  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
  • Neurological and general symptoms: headache, migraine, dizziness, fatigue, sleep disturbances, reduced concentration, anxiety, asthenia.
  • Chronic pain support: back, neck, joint, and muscle pain, tension syndromes, pain associated with osteochondrosis and chronic conditions.

Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
  • Test interpretation and diagnostic guidance.
  • Structured support for undiagnosed complaints.
  • Second opinion on diagnoses and treatment plans.
  • Nutritional and lifestyle support for vitamin deficiencies, anaemia, metabolic issues.
  • Post-operative recovery support and pain management.
  • Preconception counselling and postpartum support.
  • Immunity support and strategies to reduce frequency of infections.

Dr. Travkina combines evidence-based medicine with an attentive, personalised approach. Her consultations focus not only on treatment, but also on prevention, recovery, and long-term wellbeing.

If during the consultation it becomes clear that your case requires in-person assessment or specialised care outside of her scope, the session will be terminated and the payment fully refunded.

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Svetlana Kolomeeva

Cardiology 18 years exp.

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
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  • Metabolic syndrome, excess weight, high cholesterol.
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  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
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  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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Alexander Nazarchuk

Allergology 7 years exp.

Dr. Alexander Nazarchuk is a physician specialising in allergology and internal medicine. He provides online consultations for adults, following the principles of evidence-based medicine — no outdated treatments or unnecessary tests, with clear explanations and a personalised approach. He helps patients with a wide range of allergic and therapeutic conditions, from common day-to-day complaints to complex cases involving allergies, gastrointestinal issues, cardiovascular concerns, respiratory symptoms, and more.

You can consult Dr. Nazarchuk for:

  • Test interpretation and guidance on diagnostic plans.
  • Allergic rhinitis, hay fever, bronchial asthma (including severe cases).
  • Food and drug allergies, skin rashes, angioedema.
  • Atopic dermatitis, urticaria, contact allergies.
  • Allergen-specific immunotherapy (AIT) – initiation and ongoing management.
  • Abdominal pain, bloating, changes in bowel habits, nausea, heartburn.
  • High blood pressure and adjustment of baseline antihypertensive therapy.
  • Hyperlipidaemia and elevated cholesterol.
  • Cough, nasal congestion, fever, sore throat.
  • Anaemia, including iron deficiency and related conditions.
  • Other issues related to allergology and internal medicine.

During consultations, Dr. Nazarchuk takes a thorough, structured approach — analysing symptoms, identifying potential causes, and helping patients make informed decisions. Whether treatment, further investigation, or monitoring is needed, he explains each step clearly so you understand your health and how best to manage it.

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Frequently Asked Questions

Is a prescription required for ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS?
ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS does not require a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS?
The active ingredient in ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS is bilastine. This information helps identify medicines with the same composition but different brand names.
Who manufactures ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS?
ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS is manufactured by Faes Farma S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS?
Other medicines with the same active substance (bilastine) include ABISAX 20 mg TABLETS, ABRILIA 20 mg TABLETS, ASTRILAX 20 mg TABLETS. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
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