
The second major ingredient in Claritin, Claritin D and other allergy ingredients is pseudoephedrine. Pseudoephedrine acts as a decongestant, clearing up stuffy or runny noses. Many cough, cold and allergy preparations contain this drug.

Combined with strategies to minimize a person's contact with allergens, allergy treatment can make life bearable for even the worst allergy sufferer. Treatment often includes allergy shots or medications. Claritin is a particularly useful allergy medicine, as it usually does not cause drowsiness, like many other non-prescription allergy products.

Pregnancy: The state of carrying a developing embryo or fetus within the female body. This condition can be indicated by positive results on an over-the-counter urine test, and confirmed through a blood test, ultrasound, detection of fetal heartbeat, or an X-ray. Pregnancy lasts for about nine months, measured from the date of the woman's last menstrual period (LMP). It is conventionally divided into three trimesters, each roughly three months long.

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