Bg pattern

ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS

Prescription review online

Prescription review online

A doctor will review your case and decide whether a prescription is medically appropriate.

Talk to a doctor about this medicine

Talk to a doctor about this medicine

Discuss your symptoms and possible next steps in a quick online consultation.

This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING TABLETS

Translated with AI

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.

Show original

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.

5.0 (69)
Doctor

Tarek Agami

General medicine 11 years exp.

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

Main areas of consultation:

  • Diagnosis and treatment of acute and chronic conditions (high blood pressure, diabetes, respiratory infections, cardiovascular symptoms)
  • Evaluation of symptoms and guidance on further diagnostic testing
  • Preventive check-ups and regular health monitoring
  • Medical support during travel or after relocation
  • Treatment adjustments and lifestyle recommendations based on your personal history
Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

Camera Book a video appointment
€69
5.0 (63)
Doctor

Nuno Tavares Lopes

Family medicine 18 years exp.

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC.

  • Emergency care: infections, fever, chest/abdominal pain, minor injuries, paediatric emergencies
  • Family medicine: hypertension, diabetes, cholesterol, chronic disease management
  • Travel medicine: pre-travel advice, vaccinations, fit-to-fly certificates, travel-related illnesses
  • Sexual and reproductive health: PrEP, STD prevention, counselling, treatment
  • Weight management and wellness: personalised weight loss programmes, lifestyle guidance
  • Skin and ENT issues: acne, eczema, allergies, rashes, sore throat, sinusitis
  • Pain management: acute and chronic pain, post-surgical care
  • Public health: prevention, health screenings, long-term monitoring
  • Sick leave (Baixa médica) connected to Segurança Social in Portugal
  • IMT medical certificates for driving licence exchange
Dr. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

Dr. Lopes also provides interpretation of medical tests, follow-up care for complex patients, and multilingual support. Whether for urgent concerns or long-term care, he helps patients act with clarity and confidence.

Camera Book a video appointment
€59
5.0 (17)
Doctor

Anastasiia Shalko

Family medicine 13 years exp.

Dr. Anastasiia Shalko is a general practitioner with a background in both paediatrics and general medicine. She graduated from Bogomolets National Medical University in Kyiv and completed her paediatric internship at the P.L. Shupyk National Medical Academy of Postgraduate Education. After working as a paediatrician in Kyiv, she relocated to Spain, where she has been practising general medicine since 2015, providing care for both adults and children.

Her work focuses on urgent, short-term medical concerns – situations where patients need quick guidance, symptom assessment and clear next steps. She helps people understand whether their symptoms require in-person evaluation, home management or a change in treatment. Common reasons for booking an online consultation include:

  • acute respiratory symptoms (cough, sore throat, runny nose, fever)
  • viral illnesses such as colds and seasonal infections
  • gastrointestinal complaints (nausea, diarrhoea, abdominal pain, gastroenteritis)
  • sudden changes in how a child or adult feels
  • questions about existing treatment and whether adjustments are needed
  • renewal of prescriptions when clinically appropriate
Dr. Shalko works specifically with urgent and short-term problems, providing practical recommendations and helping patients determine the safest next step. She explains symptoms clearly, guides patients through decision-making and offers straightforward medical advice for everyday acute issues.

She does not provide long-term management of chronic conditions, ongoing follow-up or comprehensive care plans for complex long-term illnesses. Her consultations are designed for acute symptoms, sudden concerns and situations where timely medical input is important.

With clinical experience in both paediatrics and general medicine, Dr. Shalko confidently supports adults and children. Her communication style is clear, simple and reassuring, helping patients feel informed and supported throughout the consultation.

Camera Book a video appointment
€50
5.0 (3)
Doctor

Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques.

For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance.

Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults.

In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions.

Patients commonly seek his care for:

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns
Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.
Camera Book a video appointment
€80

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.
bg-pattern-dark

Stay informed about Oladoctor

News about new services, product updates and useful information for patients.

Follow us on social media