Injections represent 67.7% of product type sales in 2026. The allergy immunotherapy market is estimated at USD 2,427.7 million in 2026, is projected to reach USD 5,438.6 million by 2036 and is forecast to post an 8.4% CAGR between 2026 and 2036, creating an incremental opportunity of USD 3,010.9 million.