While allergy shots are not a cure, symptoms may be minimized through a long-term commitment by the patient. Medications should be continued in conjunction with allergy shots and improvement may be seen as early as 6 months. Factors that determine the need for allergy injections include: patient history, skin test reaction, failure of medications, and significance of the allergen to the geographical area. Allergy shots are 80-85% beneficial and require regular attendance for effective response.
If immunotherapy helps you, most patients continue it for several years. In some cases, if your symptoms return after allergy shots are stopped, it may make sense for you to start getting them again. Fortunately, most people don’t need to continue getting their shots indefinitely.
If immunotherapy is successful, you will probably have fewer (and less severe) reactions to the substances that cause your allergies to flare up. You may also find you need less medicine than before to control your allergies.
Over a period of time, immunotherapy builds your tolerance levels to specific allergens to control your allergic reactions. Immunotherapy can help relieve asthma, hay fever, conjunctivitis caused by allergies, reactions from insect bites and stings, and more.