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Definition of allergy shot
: an injection containing very small amounts of an allergen (such as mold or grass pollen) to which an individual is sensitive that is given at regular intervals usually over a period of several years to desensitize the immune system and reduce allergic symptoms
The goal of allergy shots is to render a person tolerant to an allergen when it is encountered.— Jane E. Brody The most common side effects of allergy shots are redness and swelling at the site of injection.— Richard F. Lockey
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Time Traveler for allergy shot
The first known use of allergy shot was in 1949
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