Sublingual Immunotherapy (SLIT) for Seasonal Allergies: What to Expect

Something as simple as the changing of the seasons doesn’t have to send you into a fit of sneezing, itchy eyes, and congestion. Every year, millions of Americans deal with symptoms of seasonal allergies, and over-the-counter (OTC) medications or holing up at home brings only temporary relief.

 Immunotherapy remains one of the most effective treatments for allergies today. Among the several types and modes of delivery for this treatment, sublingual immunotherapy (SLIT) is one of the most convenient options.

At Advanced Allergy, Asthma, & Immunology Center PA in San Antonio and Schertz, Texas, Dr. Patricia Gomez-Dinger, a board-certified allergist, expertly provides SLIT for people who prefer this route over traditional allergy shots.

Here, she explains what SLIT is, how it works, what to expect during treatment, and why it might be the right choice for you.

What is SLIT?

Sublingual immunotherapy (SLIT) is a type of allergy treatment that reduces your sensitivity to allergens over time. Unlike traditional allergy shots, SLIT uses a small tablet or liquid containing the allergen that goes under your tongue, where it absorbs into your blood. 

SLIT introduces small, controlled doses of allergens into your immune system, so your body builds tolerance and reduces the intensity and frequency of your allergic reactions. 

The allergens we use in SLIT are the same ones that cause your symptoms, such as pollen from trees, grass, or weeds. Over time, your immune system loses its sensitivity to these allergens, so your allergic response subsides.

What to expect from the process

Before starting SLIT, Dr. Gomez-Dinger makes a thorough evaluation, which includes a review of your medical history and allergy testing to identify the specific allergens causing your symptoms. 

Once we identify your allergens, we begin the treatment. It starts with the build-up phase, which typically lasts several weeks to a few months. 

During the build-up phase, you take increasing doses of the allergen under your tongue. This phase allows your body to gradually adjust to the allergen without triggering a severe allergic reaction.

After the build-up phase, you enter the maintenance phase, where you continue to take a consistent dose of the allergen daily or several times a week, depending on your treatment plan. This phase usually lasts 3-5 years, training your immune system to become less reactive to the allergens.

Is SLIT right for you?

SLIT is a very effective treatment for many people who have seasonal allergies, but it’s not right for everyone. 

It works best for those who are allergic to pollen, dust mites, and certain molds. If you’re allergic to multiple allergens or have severe symptoms, Dr. Gomez-Dinger may recommend a combination of therapies for the best results.

The most significant benefit of SLIT over traditional allergy shots is its convenience. So, if you’re anxious about needles or have a busy schedule that prevents you from making frequent visits to the doctor, this may be an appealing treatment option.

SLIT is also safe and has fewer side effects than some other immunotherapy options. The most common side effects are mild and include itching or tingling under the tongue, which usually subsides after the first few doses. 

Seasonal allergies don’t have to keep you stuck at home, especially in the warm summer months. With treatments like SLIT, you can reduce your symptoms and enjoy the seasons without the constant discomfort of allergies. 

If you suspect you’re suffering from seasonal allergies and are curious whether SLIT might be right for you, request an appointment with us online or call your nearest office of Advanced Allergy, Asthma, & Immunology Center PA today.