"What are allergies?
Allergies occur when the body's immune system responds to a substance it considers an "invader." Substances that provoke the immune system into an allergic response are known as allergens. There is no such thing as a"...
OPTIVAR (azelastine hydrochloride) ® is contraindicated in persons with known or suspected hypersensitivity to any of its components.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 8/5/2008
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Allergies & Asthma
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