All of the following drugs quickly reduce the symptoms of allergy except

Allergy is a condition in which the immune system overreacts to antigens found in the environment. Allergens are the compounds that cause this type of immunological response.
IgE antibodies are generated in response to them. Allergies are caused by the mast cells releasing substances such as histamine and serotonin.
Antihistamines, adrenaline and steroids are used to swiftly relieve allergic symptoms.