Immunotherapy for allergies: drops under the tongue

In shortSublingual immunotherapy gives tiny, gradually increasing doses of an allergen as drops under the tongue, with no injections. It runs for years and suits selected children.

Some children sneeze through every season, wake up wheezing, or need medicines every day for allergies. Avoiding triggers and taking medicines help a great deal. But for some children, we can go one step further and treat the root of the problem. That treatment is called allergen immunotherapy. At CARE Speciality Clinic we use sublingual immunotherapy: allergy drops placed under the tongue, with no injections.

How does it work?

In allergy, the immune system treats a harmless substance, such as dust mite or pollen, as an enemy. Sublingual immunotherapy gives the body very small, carefully measured doses of the same allergen, in the form of drops held under the tongue, with the dose increased gradually over time. The immune system slowly learns to tolerate the allergen instead of attacking it. It is a little like a patient, step-by-step lesson in not overreacting.

Who might benefit?

• Children with allergies confirmed by history and testing, such as a Skin Prick Test
• Symptoms that continue despite avoiding triggers and taking medicines
• Allergies to things that are hard to avoid, like dust mites and pollen

It is not suitable for every child, and the doctor will decide after a careful assessment, including how well your child's asthma is controlled.

How are the drops taken?

What is the journey like?

What are the benefits?

Children on immunotherapy often have fewer symptoms, need fewer medicines and may be less likely to develop new allergies or worsening asthma. It takes time, so the benefits appear gradually over months rather than overnight. And for many families, the biggest plus is simple: no needles.

Is it safe?

The first dose is given in the clinic, so that we can watch your child, and the rest of the drops are then taken at home as prescribed. The most common effects are mild and local, such as itching or tingling in the mouth or throat. Serious reactions are uncommon. Your doctor will explain what to expect, what to do if your child feels unwell, and when to call us.

A quick comparison with medicines alone

Dr. Mahima Shetty KR
Consultant Pediatrician, MBBS, MD (Pediatrics). Sees patients Mon–Sat at CARE Speciality Clinic, HSR Layout.

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This article is for general information and does not replace a medical consultation.