Histamine causes most of the symptoms related to allergic reactions. These reactions can happen after you touch or inhale allergens such as plant pollen, mold, or pet dander. Allergies usually affect your nose, sinuses, throat, and other areas of your upper respiratory system.
Cetirizine also helps relieve hives. Hives are itchy, raised rashes on the skin. They often occur with food or medication allergies. The usual dosage for adults younger than 65 years and children who are 6 years and older is one milligram mg dose per day. Your doctor may recommend a 5-mg dose once or twice per day if your allergies are mild.
Cetirizine is a newer, second-generation antihistamine. Unlike first-generation antihistamines, cetirizine is less likely to cause side effects such as dangerous drowsiness, dry mouth, blurred vision, and overheating. Tell your doctor about any unexpected side effects that you have while taking cetirizine. Also, discuss any ongoing or bothersome side effects. These side effects are usually not emergencies. Be cautious. Taking cetirizine is generally safe during pregnancy. If you have liver or kidney disease, ask your doctor about taking cetirizine.
For example, avoid consuming alcoholic drinks while you take cetirizine. Doing so may be dangerous. Mixing cetirizine with alcohol can cause drowsiness or make you less alert. If you take any type of tranquilizer, sedative, or sleep aid, make sure to mention this to your doctor before you use cetirizine. Mixing cetirizine with drugs that depress your central nervous system can increase sleepiness.
It can also further affect your mental and nervous system functions. There is a possibility of a drug interaction between cetirizine and theophylline. Theophylline Theo is a drug that some people with asthma and other lung problems take. In some instances when the two drugs were taken, it took longer for cetirizine to leave the body. However, the interaction may be dose-related. It has only been reported with daily theophylline doses of mg or more.
Cetirizine-D and brand-name versions, such as Zyrtec-D, are combination drugs. These drugs contain both cetirizine and the decongestant pseudoephedrine. Pseudoephedrine is a stimulant and can make certain health conditions worse. 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. Like any drug, especially OTC medication, you should understand all of the considerations before you start taking it.
Talk to your doctor about any questions you have about your symptoms and any other conditions you may have. Your doctor may recommend a different antihistamine or a combination drug of cetirizine and another product that may require a prescription.
Learn more about the ways you can treat a stuffy nose, or nasal congestion, at home, including tips on decongestants, humidifiers, and steam remedies.
Allegra Allergy and Claritin are over-the-counter allergy medications. While they both treat allergy symptoms, they're not identical medications. Ask a doctor or pharmacist before use if you are taking tranquilizers or sedatives. Stop use and ask a doctor if an allergic reaction to this product occurs. Seek medical help right away. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
Adults and children 6 years and over: One 10 mg tablet once daily; do not take more than one 10 mg tablet in 24 hours. A 5 mg product may be appropriate for less severe symptoms.
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Looks like you have an existing account with us. We have made some changes to our site and we need you to create a new password in order to login. Click send to recieve an email with instructions on how to create your new password. Use only as directed. Buy Online Find Locally. Relieves your worst allergy symptoms, indoors and out. This website contains current product information and may differ from the information on the product packaging you may have.
Why Zyrtec. Where to Buy. Temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: Runny nose Sneezing Itchy, watery eyes Itching of the nose or throat. When using this product: drowsiness may occur avoid alcoholic drinks alcohol, sedatives and tranquilizers may increase drowsiness be careful when driving a motor vehicle or operating machinery Stop use and ask a doctor if an allergic reaction to this product occurs.
If pregnant or breast-feeding: if breast-feeding: Not recommended if pregnant: Ask a health professional before use Keep out of reach of children.
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