Package Leaflet: Information for the Patient
Actair 300IR Sublingual Tablets
For use in adolescents and adults (from 12 to 65years old)
Standardized allergen extracts from house dust mites
(Dermatophagoides pteronyssinusand Dermatophagoides farinae)
This medicinal product is subject to additional monitoring, which will allow for the quick identification of new safety information. You can help by reporting any side effects you may get. The last section of section 4 will tell you how to report side effects.
Read all of this leaflet carefully before you start taking this medicine, because it contains important information for you.
Contents of the pack
This medicine contains standardized allergen extracts from house dust mites.
This medicine is used to treat allergic rhinitis (inflammation of the nasal mucosa) in adolescents (12-17 years old) and adults. This medicine works by increasing immune tolerance to house dust mites (i.e., the body's ability to cope with their presence). You may not notice an improvement until you have been taking the treatment for 3 months.
Before starting treatment, a doctor must diagnose your allergy through skin tests or appropriate blood tests.
The first dose of this medicine should be taken under medical supervision. You should remain under medical observation for at least half an hour after taking the tablet. This is a precaution to observe your sensitivity to the medicine. It will also give you the opportunity to discuss any possible side effects with your doctor.
This medicine must be prescribed by a doctor with experience in the treatment of allergies.
Do not take Actair
Do not start taking this medicine if you are pregnant.
Warnings and precautions
Consult your doctor or pharmacist before starting to take this medicine:
Tell your doctor:
Do not stop taking your asthma control and/or relief medications without your doctor's advice, as this may worsen your asthma symptoms.
During treatment, it is expected that some localized allergic reactions of mild or moderate intensity will occur. If the reactions are severe, talk to your doctor to determine if you need any antiallergic medication, such as antihistamines.
Children and adolescents
This medicine is used to treat allergic rhinitis in adolescents (12-17 years old). This medicine should not be used in children under 12 years old.
Other medicines and Actair
Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines, including those without a prescription. If you are taking other medicines for allergies, such as antihistamines, asthma medications, or steroids, or a medicine that blocks a substance called immunoglobulin E (IgE), for example, omalizumab, talk to your doctor about whether you should continue taking them. If you stop taking your allergy medications, you may experience more side effects during treatment with this medicine.
Using Actair with food and drinks
Do not consume food or drinks for at least 5 minutes after taking this medicine.
Pregnancy and breastfeeding
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.
There is no experience with the use of this medicine during pregnancy. Therefore, you should not start treatment with this medicine if you are pregnant. If you become pregnant while taking this medicine, consult your doctor about whether it is appropriate to continue treatment.
There is no experience with the use of this medicine during breastfeeding. However, no effects on breastfed infants are expected. Consult your doctor to determine whether it is appropriate to continue treatment with this medicine during breastfeeding.
Driving and using machines
No effects of this medicine on the ability to drive or use machines have been observed.
Actair contains lactose
This medicine contains lactose. If your doctor has told you that you have an intolerance to some sugars, contact them before taking this medicine.
Actair contains sodium
This medicine contains less than 23 mg of sodium (1 mmol) per tablet; this is essentially "sodium-free".
Follow the instructions for administration of this medicine exactly as indicated by your doctor. If you are in doubt, consult your doctor or pharmacist again.
The first tablet should be taken under medical supervision. Your doctor will tell you how long you should take this medicine.
Treatment starts with an initiation phase, i.e., the dose is progressively increased until the maintenance dose of 300 IR is reached. The IR (Index of Reactivity) expresses the activity.
Maintenance treatment
The dose is 300 IR (one tablet) per day.
Use inadolescents
The administration schedule in adolescents is the same as in adults.
Take this medicine as follows:
If you take more Actair than you should
If you take more of this medicine than you should, you may experience allergic symptoms such as localized symptoms in the mouth and throat. If you experience severe symptoms, contact a doctor or hospital immediately.
If you forget to take Actair
If you have forgotten to take a tablet, take it later during the day. Do not take a double dose to make up for forgotten doses. If you have not taken this medicine for more than 7 days, contact your doctor before taking this medicine again.
If you stop taking Actair
If you do not take this medicine as indicated by your doctor, you may not get the beneficial effects of the treatment. If you have any other questions about the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Side effects can be an allergic reaction to the allergen being treated. Most side effects last from minutes to hours after taking the medicine and will disappear when you have been treated for 1 to 3 months.
Stop taking this medicine and contact your doctor or hospital immediately if you experience any of the following symptoms:
Other possible side effects:
Very common (may affect more than 1 in 10 people):
Common (may affect up to 1 in 10 people):
Uncommon (may affect up to 1 in 100 people):
Rare (may affect up to 1 in 1,000 people):
If you are concerned about any side effect, consult your doctor to decide whether you need to take any medication, such as antihistamines, for relief.
Reporting of side effects
If you experience any side effects, consult your doctor or pharmacist, even if they are possible side effects not listed in this leaflet. You can also report them directly through the Spanish Medicines Monitoring System for Human Use: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.
This medicine does not require any special storage conditions.
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 label after EXP. The expiry date is the last day of the month shown.
Medicines should not be disposed of via wastewater or household waste. Return any unused medicine to your pharmacist. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.
Composition of Actair
The IR (Index of Reactivity) expresses the activity.
Appearance and packaging of the product
Sublingual tablet.
The 300 IR tablets are white to beige, round, and biconvex, with brown speckles and "SAC" engraved on one side and "300" engraved on the other.
The tablets are supplied in aluminum blisters sealed with a separable aluminum foil and in a cardboard box.
Package sizes:
Package of 30 sublingual tablets
Package of 90 sublingual tablets
Not all pack sizes may be marketed.
Marketing authorization holder and manufacturer
Stallergenes
Rue Alexis de Tocqueville, 6
92160 Antony
France
You can obtain further information on this medicine by contacting the local representative of the marketing authorization holder:
Stallergenes Ibérica S.A.
Llacuna, 22 – 2º 1ª
08005 – Barcelona
Spain
This medicine is authorized in the Member States of the European Economic Areaand in the United Kingdom (Northern Ireland)under the following names:
Austria Actair 300 IR Sublingualtabletten
Belgium Orylmyte 300 IR comprimés sublinguaux
Bulgaria ?????? 300 IR ???????????? ????????
Croatia Orylmyte 300 IR sublingvalne tablete
Czech Republic, Poland, Portugal, Romania ACTAIR
Denmark, Norway, Sweden Aitmyte
France Orylmyte 300 IR comprimé sublingual
Germany ORYLMYTE 300 IR
Ireland, United Kingdom (Northern Ireland) ACTAIR 300 IR sublingual tablets
Italy, Luxembourg ORYLMYTE
Netherlands Actair 300 IR, tabletten voor sublinguaal gebruik
Slovenia Actair 300 IR podjezicne tablete
Slovakia ACTAIR 300 IR sublingválne tablety
Spain Actair 300 IR comprimidos sublinguales
Date of last revision of this leaflet: January 2023
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/
The average price of ACTAIR 300 IR SUBLINGUAL TABLETS in October, 2025 is around 98.82 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.