Kallergen

Kallergen, now operating as Allergy Therapeutics Italia, is a specialty pharmaceutical company and brand focused on the diagnosis and treatment of allergic diseases. Originally an independent Italian firm, it was acquired by the UK-based Allergy Therapeutics plc in 1999 and now serves as its primary Italian subsidiary. The company is best known for its Kallergen line of synbiotic products, including Kallergen D and Kallergen Th, which are designed to manage atopic dermatitis and other allergic conditions by modulating the gut-immune axis. Its broader portfolio includes allergen immunotherapy (AIT) solutions, diagnostic tests, and specialized supplements for respiratory and food allergies.