![]() ![]() Zyrtec, like all other antihistamines, may decrease the response to skin prick tests.The dosage of Zyrtec should be reduced in kidney disease and caution should be exercised when Zyrtec is used in people with seizure disorders.Alcohol, sedatives, and tranquilizers may enhance this effect and should be avoided. Caution should be exercised before driving or operating machinery until the full effects of Zyrtec are known. Generally does not cause drowsiness, although more likely to do so at higher dosages.Stop using Zyrtec if you develop an allergy to Zyrtec. A headache, sore throat, abdominal pain, fatigue, drowsiness, or coughing.If you are between the ages of 18 and 60, take no other medication or have no other medical conditions, side effects you are more likely to experience include: ![]() Zyrtec is available as a generic under the name of cetirizine.No dosage adjustment is required in liver disease.Zyrtec has been demonstrated to be safe in children older than 6 months.Zyrtec does not appear to interact with many drugs (theophylline slightly decreased the clearance of Zyrtec).May be given daily, regularly, when allergens are most prevalent (such as during spring or summer).5mg may be appropriate for less severe symptoms. The dosage for adults and children over the age of 6 is one 10mg tablet once daily. Is less likely to cause sedation than older antihistamines.May be used in the treatment of allergic conjunctivitis, insect bites, and other allergic skin disorders.Symptoms of hives include raised, red, itchy bumps, streaks, or blotches on the skin. Can provide relief from the itching that occurs as a result of chronic urticaria (hives).Effective at controlling symptoms such as sneezing, itching, watery eyes, runny nose, and itchy throat that occur as part of an allergic reaction or allergy.Used to treat allergic-type reactions due to perennial or seasonal allergic rhinitis (hay fever).Zyrtec may also be called an H1-antihistamine, a second-generation antihistamine, or a nonsedating antihistamine. Zyrtec belongs to the group of drugs known as antihistamines.Because it acts on peripheral histamine receptors, Zyrtec is much less likely to cause drowsiness compared with some older antihistamines. Zyrtec binds to histamine receptors and prevents histamine from having an effect on those receptors, which reduces the symptoms of an allergic reaction. Histamine is a chemical that is released by mast cells in response to an allergen, and it is responsible for many of the symptoms of an allergic reaction, such as swelling of the mucous membranes, sneezing, and itching. Zyrtec (cetirizine) works selectively on peripheral histamine-1 (H-1) receptors (these are histamine receptors that are located outside of the brain and spinal cord) to block the effects of histamine.Zyrtec is a brand (trade) name for cetirizine which may be used to treat the symptoms of an allergic reaction or insect bite.Medically reviewed by Carmen Pope, BPharm. ![]()
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