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| | Cetirizine (Site not responding. Last check: 2007-11-04) |
 | | Cetirizine blocks the effects of histamine, a naturally occurring substance within the body that causes swelling, itching, sneezing, watery eyes, hives, and other symptoms of allergic reaction. |
 | | Cetirizine may, however, increase the depressant effects of alcohol, sedatives, tranquilizers, painkillers, barbiturates, or other antihistamines on the central nervous system. |
 | | Cetirizine blood levels may increase in patients with liver or kidney disease, since these organs work together to remove the medication from the body. |
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