Sublingual immunotherapy, more commonly known as allergy drops, is a long-term treatment for allergies. It’s an alternative to subcutaneous immunotherapy, or allergy shots, that is growing increasingly popular. Below we review everything you need to know about sublingual immunotherapy, including how long it takes to provide relief.
How Does Sublingual Immunotherapy Work?
Sublingual immunotherapy (SLIT) works by exposing your immune system to small amounts of allergen extracts in order to help you build up a tolerance.
There are two forms of SLIT: drops or tablets. These are placed under the tongue and held there until they are dissolved. This is done multiple days a week or every day, depending on what you’re prescribed.
Is Sublingual Immunotherapy FDA-Approved?
SLIT has been by the FDA to treat certain types of allergies. In 2014, the FDA approved three SLIT products: Grastek for grass allergies, Oralair also for grass allergies and Ragwitek for ragweed allergies. In 2017, the product Odactra was approved to treat allergic rhinitis and conjunctivitis caused by house dust mites. All FDA-approved products are in tablet, rather than drop, form.
Liquid drops can still be used, even though they aren’t FDA-approved yet. There is still research being done to determine the best dosage and timing for the drops, as well as possible side effects.
Is Sublingual Immunotherapy Safe & Effective?
Though some people experience mild to moderate side effects of SLIT, over the past 10 years of research, no serious or fatal reactions have occurred. Possible side effects include:
- Itchy lip, mouth or tongue.
- Itchy, red or swollen eyes.
- Nausea, vomiting, abdominal cramping or diarrhea.
- Nasal itching, congestion and sneezing.
- Asthma.
- Hives and swelling.
One benefit of SLIT over subcutaneous immunotherapy (SCIT) is that, with the exception of your first dose, they can be administered at home.
How Long Does Immunotherapy Take to Work?
Though some people begin to experience some relief from symptoms during visits to Piedmont Park after just a few months, it takes about three to five years to reach the full benefit. By this time, your symptoms should be extremely mild, or you may even be totally symptom-free.
For more information about the benefits of sublingual immunotherapy or to schedule an appointment with an allergy expert, call ENT of Georgia North today.
