Science behind Allergy Drops

Allergy drops have been used around the world for over 25 years. The effectiveness of sublingual allergy drops in relieving allergies has been studied in more than 50 clinical trials over the past 15 years with outstanding results. Allergy drops are recognized as an effective treatment for allergies by the World Health Organization.  
Sublingual Immunotherapy allergy drops desensitize allergy sufferers with small amounts of the offending allergen daily under the tongue. Research shows that when an allergen is presented this way, sublingually, it is naturally and more readily absorbed through dendritic cells found under the tongue. Once the allergy drops containing the antigen are placed under the tongue, they are taken up by the dendritic cells they remain there for about 18 to 20 hours while they start doing their job of sending the signals to the T-regulatory cells. When sublingual immunotherapy allergy drops are administered into the gastrointestinal tract, the immune system tolerates the allergen, instead of the over-reactivity typically seen with specific allergies. This means less allergy symptoms when you are exposed to an allergy source, such as pollen, dust or cat dander and allows the allergy sufferer to become desensitized to those allergy causes.
Please have a look at the list of clinical trials of reporting the success subingual immunotherapy allergy drops.  There is a constant stream of new clinical information coming out regularly, so be sure to check back.
List of clinical trials on sublingual allergy drops here: