Zyrtec

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

If you are self-treating with the over-the-counter product, read all the directions on the product package before taking this medication. If your doctor has prescribed this medication, follow your doctor's directions and the instructions on your prescription label. If you have any questions, consult your doctor or pharmacist. Take this medication by mouth with or without food, usually once a day or as directed by your doctor. If you are using the chewable tablets, chew the tablets well and swallow. Dosage is based on your age, condition, and response to treatment. Do not increase your dose or take this drug more often than directed. Do not take more of this medication than recommended for your age. Tell your doctor if your allergy symptoms do not improve after 3 days of treatment or if your hives last more than 6 weeks. Seek immediate medical attention if your condition worsens or if you think you have a serious medical problem (e.g., very serious allergic reaction/anaphylaxis).

If you are taking this medication under your doctor's direction, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first. Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription products you may use, especially of drugs that cause drowsiness such as: certain antihistamines (e.g., diphenhydramine), anti-seizure drugs (e.g., carbamazepine), medicine for sleep or anxiety (e.g., alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., chlorpromazine, risperidone, amitriptyline, trazodone). Do not use with any other antihistamines applied to the skin (such as diphenhydramine cream, ointment, spray) because increased side effects may occur. Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely. If you are scheduled for allergy testing, ask your doctor if you should stop taking this medication for several days before testing. This drug may affect your allergy test results. This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

If your doctor has prescribed this medication for you, do not share it with others.

If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US National Poison Hotline at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe drowsiness. In children, symptoms may include: restlessness and irritability, and may be followed by drowsiness.

Before taking cetirizine, tell your doctor or pharmacist if you are allergic to it; or to hydroxyzine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history. Do not self-treat with this medication without consulting your doctor first if you have certain medical conditions such as: kidney disease, liver disease. This drug may make you drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages. If you have hives and your doctor has prescribed cetirizine, or if you are considering using this drug to treat your own hives, tell your doctor immediately if you have any of these other symptoms because they may be signs of a more serious condition: hives that are an unusual color, hives that look bruised or blistered, hives that do not itch. Kidney function declines as you grow older. This medication is removed by the kidneys. Therefore, older adults may be at greater risk for side effects (e.g., drowsiness) while using this drug. During pregnancy, this medication should be used only when clearly needed and as directed by your doctor. Discuss the risks and benefits with your doctor before taking this drug. This drug passes into breast milk. Consult your doctor before breast-feeding.

Different brands/strengths of this medication may have different storage requirements. Read the package labeling or ask your pharmacist for the storage requirements for the product you are using. Protect from light. Do not store in the bathroom. Keep all medicines away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.

Drowsiness, tiredness, and dry mouth may occur. In children, stomach pain and vomiting may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. If your doctor has prescribed this medication, he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.