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Dust Mite Sublingual Immunotherapy in Gangnam, Seoul

Medically reviewed by Dr. Kim Yoo Suk, MD · Board-certified otolaryngologist · Former professor, Yonsei & Ajou University · Consultations in English

What is sublingual immunotherapy?

Allergen immunotherapy is the only allergy treatment that targets the underlying immune response rather than just suppressing symptoms. In sublingual immunotherapy, a standardized allergen extract is absorbed through the lining under the tongue. Regular exposure over years shifts the immune system toward tolerance, which can reduce symptoms and medication needs. The clinic offers house dust mite SLIT using Acarizax, a dissolving tablet containing standardized mite allergen extract.

Who is it for?

SLIT may be considered for adults and adolescents who have:

• Moderate to severe allergic rhinitis with confirmed house dust mite sensitization on an allergy test
• Symptoms that persist despite avoidance measures and allergic rhinitis medication
• A wish to reduce long-term reliance on daily sprays and antihistamines
• Commitment to daily treatment for several years

It is generally not suitable for people with severe or uncontrolled asthma, certain immune or oral conditions, or in some cases during pregnancy; these points are reviewed individually.

How it is done at our Gangnam clinic

Dr. Kim Yoo Suk is a board-certified otolaryngologist, former Yonsei and Ajou rhinology faculty member, and member of the Korean Academy of Asthma, Allergy and Clinical Immunology. He follows the ARIA guideline for allergic rhinitis, in which immunotherapy is one pillar alongside avoidance, medication and, when needed, surgery.

1. Confirmation: history, nasal endoscopy and allergy testing to confirm mites are the relevant trigger.
2. First dose: taken at the clinic with a period of observation for reactions, as is standard practice.
3. Home treatment: one tablet daily under the tongue, held until dissolved, without eating or drinking for a short time afterward.
4. Follow-up: regular reviews to check tolerance, symptoms and adherence.

Treatment is commonly continued for about three years for longer-lasting benefit, and improvement typically builds gradually over months. House dust mite SLIT is a non-covered (non-insured) item at the clinic; the cost is explained beforehand.

Side effects and limitations

Common early side effects are local: itching or swelling of the mouth, tongue or throat, and throat irritation. These usually lessen within the first weeks. Severe allergic reactions are rare but possible, which is why the first dose is supervised. Stop treatment and seek urgent care for difficulty breathing or swallowing, widespread hives, or throat tightness. SLIT does not work for everyone and requires consistent daily use to be effective; it treats mite allergy only, not other allergens or non-allergic rhinitis.

Practical information for foreign patients

SLIT suits long-term residents of Korea, such as expat professionals and students, better than short-stay visitors, because it requires years of daily tablets and periodic reviews. If you move abroad, ask about continuing treatment with a doctor at your destination; the clinic can provide English records. See Dr. Kim's background and the English-speaking patient guide.

Frequently asked questions

How long does dust mite immunotherapy take to work?

Some patients notice improvement within a few months, but benefit typically builds gradually. Treatment is usually continued for about three years to achieve longer-lasting effects that may persist after stopping. Regular follow-up helps track progress.

Can I take sublingual immunotherapy if I have asthma?

Mild, well-controlled asthma does not necessarily exclude SLIT, and mite immunotherapy may even benefit allergic asthma. Severe or uncontrolled asthma is a contraindication. Dr. Kim assesses your asthma status before recommending treatment.

What should I do if I miss a dose?

Generally, simply take the next dose as scheduled and do not double up. If you miss several days in a row, contact the clinic before restarting, because you may need advice on how to resume treatment safely.

This page is general medical information written and reviewed by an ENT specialist. It is not a diagnosis or a guarantee of results; every treatment carries risks, and suitability is decided only after an examination. In an emergency in Korea, call 119.