November 30, 2015
Recommended Topic Related To:


"Plants produce round pollen grains. Individual grains are too tiny to see with the naked eye, but some can form large, visible clusters. For fertilization to take place and seeds to form in some plants, pollen must be moved from the flower of one"...



Competes with histamine for H1-receptor sites on effector cells in the gastrointestinal tract, blood vessels, and respiratory tract.

Last reviewed on RxList: 4/18/2013
This monograph has been modified to include the generic and brand name in many instances.

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Allergies & Asthma

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