pills are included in allergy kits to stop or reduce itching, hives,
sneezing and wheezing, and other symptoms caused by an
allergic reaction. Examples of antihistamines include diphenhydramine (such as Benadryl) and chlorpheniramine (such as Chlorphen and Chlor-Trimeton). The antihistamine pills are not a substitute for an
Many allergic symptoms, such as hives and
wheezing, occur when a chemical called histamine is released as part of the
allergic reaction to an
allergen. Antihistamine medicines block the release of
Antihistamines can make people sleepy or make it harder
for them to concentrate. These medicines should be used carefully by people who
need to drive or operate heavy machinery. Other side effects include dry mouth,
nausea and vomiting, restlessness or irritability (especially in children),
inability to urinate, and blurred vision.
Don't give antihistamines
to your child unless you've checked with the doctor first.
January 5, 2012
E. Gregory Thompson, MD - Internal Medicine
& Rohit K Katial, MD - Allergy and Immunology
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