Warning: session_start(): Session cannot be started after headers have already been sent in /customers/5/d/d/trustedbusinessinsights.com/httpd.www/inner-header.php on line 3 Global Allergy Immunotherapy Market expected to generate around USD 3.76 billion by 2025, at a CAGR of around 10.5% between 2019 and 2025. Allergy immunotherapy is a type of immunotherapy where the person suffering from certain any kind of allergy is exposed to a particular type of allergen till the time his/her immune system modifies.