For adults and children 2 years of age and older, it is used for the relief of symptoms associated with seasonal allergies including sneezing; itchy nose and throat; stuffy and runny nose; and tearing, red, or itchy eyes. It can also further affect your mental and nervous system functions.There is a possibility of a drug interaction between cetirizine and theophylline. https://www.webmd.com/drugs/2/drug-14060/reglan-injection/details Hives are itchy, raised rashes on the skin. Monitor therapy Our website services, content, and products are for informational purposes only. Our website services, content, and products are for informational purposes only. Cetirizine may cause central nervous system depression; avoid activities requiring mental alertness until accustomed to medication; Use caution in hepatic and renal impairment; The elderly may be more sensitive to adverse effects; Pregnancy and Lactation. If experienced, these tend to have a Less Severe expression 1. Talk to your doctor if you take theophylline and are considering cetirizine.Cetirizine-D and brand-name versions, such as Zyrtec-D, are combination drugs. Your doctor may tell you that cetirizine-D is not for you if you have any of these conditions:Cetirizine is an OTC drug that can relieve mild to moderate allergy symptoms. Cetirizine is also used to treat itching and swelling caused by hives. Also, discuss any ongoing or bothersome side effects. References "Product Information. Alcohol or Children may be more sensitive to the side effects of this drug, especially Older adults may be more sensitive to the effects of this drug, especially drowsiness, tardive dyskinesia, and Parkinson-like side effects. That is, you don’t need a prescription. The study is created by eHealthMe based on reports (from sources including the FDA) of 189,227 people who take Reglan and Zyrtec, and is updated regularly. © 2005-2020 Healthline Media a Red Ventures Company. You may report side effects to Health Canada at 1-866-234-2345.This drug may make you dizzy or drowsy. Wyeth-Ayerst Laboratories, Philadelphia, PA. Bottner RK, Tullio CJ "Metoclopramide and depression." The study is created by eHealthMe based on reports of 705 people who take Zyrtec and Reglan from the FDA, and is updated regularly. Allergies usually affect your nose, sinuses, throat, and other areas of your upper respiratory system.Cetirizine also helps relieve hives. Dryness Of The Nose 4. If you notice other effects not listed above, contact your doctor or pharmacist.Call your doctor for medical advice about side effects. Cetirizine is an allergy medication that you can buy over the counter (OTC) at a pharmacy. Healthline Media does not provide medical advice, diagnosis, or treatment. Consider therapy modification. It blocks the effects of histamine.Cetirizine helps relieve mild to moderate allergy symptoms, such as:These reactions can happen after you touch or inhale allergens such as plant pollen, mold, or pet dander. Don’t drive your car or use machinery until you know for sure how your body will respond to cetirizine.Don’t use cetirizine if you have ever had an allergic reaction to it or to any of the ingredients in it. Throat Dryness Drug interactions are reported among people who take Zyrtec and Reglan together. Metoclopramide: May enhance the CNS depressant effect of CNS Depressants. Management: Reduce the usual dose of CNS depressants by 50% if starting methotrimeprazine until the dose of methotrimeprazine is stable. These side effects are usually not emergencies.Following are a few things to consider before taking cetirizine.Even though cetirizine doesn’t usually cause drowsiness, some people respond differently when taking it, especially in the first few doses.Be cautious. It is used to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. You typically take it just once per day, and it begins to work quickly.It’s inexpensive, too — usually less than $1 per day for brand-name versions (Zyrtec, Aller-Tec, and Alleroff), and even less for generic products.Generally, cetirizine is a safe and effective drug, but you should be aware of certain warnings and precautions when taking this drug.