Typically, there are two phases to allergy shot treatment: • Build-up phase - During this initial phase, shots are administered quite frequently, usually 1 to 2 times a week. This phase allows your immune system to build tolerance to allergens. This typically spans between 3 and 6 months. • Maintenance phase - After reaching the optimal dose, the frequency will be reduced to about once a month. The maintenance phase continues for 3 to 5 years to solidify your immune system's desensitization. The total number of shots needed varies, with most people requiring around 20 to 30 injections during the build-up phase. The goal is to achieve long-term symptom relief and tolerance. Your allergist will create a personalized treatment plan that considers your specific allergies, response to treatment, and health factors.