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ASTRILAX 20 mg TABLETS

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About the medicine

How to use ASTRILAX 20 mg 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 20 mg 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 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 and what is it used for
  2. What you need to know before taking Astrilax
  3. How to take Astrilax
  4. Possible side effects
  5. Storage of Astrilax
  6. Package Contents and Additional Information

1. What is Astrilax and what is it used for

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

Astrilax 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 your 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

Do not take Astrilax

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 Astrilax if you have moderate or severe kidney impairment, low blood potassium levels, magnesium, calcium, if you have or have had heart rhythm problems or if your heart rate is very low, if you are taking medications 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 disease and are also taking other medications (see "Use of Astrilax with other medications").

In case 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

Tell your doctor or pharmacist if you are using, have recently used, or may need to use any other medicine, including those obtained without a prescription.

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

  • 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)
  • Cyclosporine (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 with Food, Drinks, and Alcohol

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

  • take the tablet and wait one hour before eating or taking fruit juices, or
  • if you have taken food or fruit juice, wait two hours before taking the tablet.

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

Pregnancy, Breastfeeding, and Fertility

There are no data or limited data on the use of bilastine in pregnant women, during breastfeeding, or 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 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 contains Sodium

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

3. How to take Astrilax

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 tablet (20 mg) per day.

  • The tablet is for oral use.
  • The tablet should be taken one hour before or two hours after taking any food or fruit juice (see section 2, "Taking Astrilax with Food, Drinks, and Alcohol").
  • Swallow the tablet with a glass of water.
  • The score line is only for breaking the tablet if you find it difficult to swallow it whole.

You should consult your 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 available.

If you take more Astrilax than you should

If you or anyone else exceeds the 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

Do nottake 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.

Medicine questions

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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, 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 your 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 Vigilance System for Human Use: www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Astrilax

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

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

This medicine does not require any special storage conditions.

Medicines should not be disposed of via wastewater or household waste. Return the medicine to a pharmacy for proper disposal. If you are unsure, ask your pharmacist how to dispose of the medicine. This will help protect the environment.

6. Package Contents and Additional Information

Composition of Astrilax

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

The other ingredients are microcrystalline cellulose, sodium carboxymethyl starch (type A) (derived from potato starch), anhydrous colloidal silica, magnesium stearate.

Appearance of the Product and Package Contents

Astrilax are white, oval, biconvex, and scored tablets (length 10 mm, width 5 mm).

The tablets are packaged in single-dose precut blisters of 7x1, 10x1, 14x1, and 20x1 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 Tablets

Spain: Astrilax 20 mg Tablets

Portugal: Astrilax 20 mg 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 20 mg TABLETS

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

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Jorge Correa Bellido

General medicine 7 years exp.

Dr. Jorge Correa Bellido is a Spanish physician who offers online consultations in Spanish and English. He graduated from the University of La Laguna and has a solid background in clinical practice and international research.

Throughout his career, he has participated in various medical and academic projects, including a research fellowship in Spain, where he contributed to evidence-based studies in the field of family medicine. This experience allowed him to broaden his global perspective on healthcare and comprehensive patient care.

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He also treats infectious and allergic diseases, general health concerns, and provides guidance on prevention and healthy lifestyle habits.

His services include virtual consultations, diagnosis and management of acute and chronic diseases, prescription renewals, and personalized medical advice.

With a patient-centered approach and a strong commitment to continuous learning, Dr. Correa Bellido provides accessible and high-quality healthcare to patients both in Spain and around the world.

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Joao Silva

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Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

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From January 2022 until March 2026, he works as a Resident Physician in General and Family Medicine at USF Salvador Machado in Oliveira de Azeméis, developing clinical activities in primary healthcare, follow-up of chronic patients, and health promotion in the community.

Complementing his medical training, Dr. João Silva also completed a Postgraduate Degree in Continuing and Palliative Care at CESPU, strengthening his preparation in the comprehensive approach to patient care, especially in situations requiring prolonged care and multidisciplinary support.

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Daniel Cichi

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Dr Daniel Cichi is a family medicine doctor with over 20 years of clinical experience. He provides online consultations for adults, supporting patients with acute symptoms, chronic conditions, and everyday health concerns that require timely medical guidance. His background includes work in emergency care, ambulance services, and family medicine, which allows him to assess symptoms quickly, identify warning signs, and help patients choose the safest next steps – whether that means home care, treatment adjustment, or in-person evaluation. Patients commonly consult Dr Daniel Cichi for: 

  • acute symptoms: fever, infections, flu-like illness, cough, sore throat, shortness of breath;
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Dr Cichi’s consultations are structured and practical. He focuses on clear explanations, risk assessment, and actionable recommendations, helping patients understand their symptoms and make informed decisions about their health.

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Chikeluo Okeke

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Dr Chikeluo Okeke is an internal medicine doctor with extensive international clinical experience. Originally from Nigeria, he has worked across multiple European healthcare systems and currently practises in Sweden. This professional path has given him a strong understanding of different medical approaches and the ability to work effectively with patients from diverse cultural and linguistic backgrounds.

Dr Okeke focuses on general internal medicine and adult primary care, combining clinical accuracy with careful attention to lifestyle, personal context, and everyday health concerns. His consultations are particularly well suited for people who seek medical advice online, live abroad, or need clear guidance without unnecessary complexity.

He provides online consultations covering symptom assessment, prevention, and long-term management of chronic conditions, helping patients understand what is happening and decide on appropriate next steps.

Common reasons for consultation:

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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.

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  • 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.

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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:

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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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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.

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Frequently Asked Questions

Is a prescription required for ASTRILAX 20 mg TABLETS?
ASTRILAX 20 mg 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 20 mg TABLETS?
The active ingredient in ASTRILAX 20 mg TABLETS is bilastine. This information helps identify medicines with the same composition but different brand names.
Who manufactures ASTRILAX 20 mg TABLETS?
ASTRILAX 20 mg 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 20 mg 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 20 mg 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 20 mg TABLETS?
Other medicines with the same active substance (bilastine) include ABISAX 20 mg TABLETS, ABRILIA 20 mg TABLETS, ASTRILAX FLAS 20 mg ORALLY DISINTEGRATING 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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