"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.
Last reviewed on RxList: 8/5/2008
This monograph has been modified to include the generic and brand name in many instances.
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