cetirizine – oral, Zyrtec
Medication Uses How To Use Side Effects Precautions Drug Interactions Overdose Notes Missed Dose Storage USES: Cetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, sneezing, hives, and itching. It works by blocking histamine, a natural substance that your body makes during an allergic reaction. Cetirizine does not prevent hives or treat a serious allergic reaction. Therefore, if your doctor has prescribed epinephrine to treat allergic reactions, always carry your epinephrine injector. Do not use cetirizine instead of your epinephrine. HOW TO USE: If you are taking the over-the-counter product to self-treat, read all directions on the product package before taking this medication. If you have any questions, consult your pharmacist. If your doctor has prescribed this medication, take it as directed, usually once daily. If you are using chewable tablets, chew each tablet well and swallow. If you are using the rapidly-dissolving tablet, allow it to dissolve on the tongue and then swallow, with or without water. If you are using the liquid form of this medication, measure the dose carefully using a special measuring device/spoon. Do not use a household spoon because it may not provide the correct dose. The dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this medication more often than directed. Tell your doctor if your allergy symptoms do not improve, if your hives do not improve after 3 days of treatment, or if your hives last more than 6 weeks. Get medical help right away if your condition worsens or if you think you have a serious medical problem. SIDE EFFECTS: Drowsiness, tiredness, and dry mouth may occur. Stomach pain may also occur, especially in children. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Tell your doctor right away if you have any serious side effects, including difficulty urinating and weakness. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including rash, itching/swelling, severe dizziness, and 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. In Canada, call your doctor for medical advice about side effects. You may report side effects to Health Canada.
PRECAUTIONS: Before taking cetirizine, tell your doctor or pharmacist if you are allergic to it, hydroxyzine, levocetirizine, or any other allergies. This product may contain inactive ingredients that can cause allergic reactions. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially difficulty urinating, kidney disease, liver disease. If you are using this medication to treat hives, tell your doctor right away if you have any of these other symptoms as they may be signs of a more serious condition. 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. Avoid alcoholic beverages. Liquid products may contain sugar. Caution is advised if you have diabetes. Ask your doctor or pharmacist about using this product safely. Before having surgery, tell your doctor or dentist about all the products you use. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. This medication passes into breast milk. Consult your doctor before breastfeeding. DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval. Tell your doctor or pharmacist if you are taking other products that cause drowsiness, including alcohol, other antihistamines, drugs for sleep or anxiety, muscle relaxants, and narcotic pain relievers. Check the labels on all your medicines because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely. Do not use with any other antihistamines applied to the skin because increased side effects may occur. Cetirizine is similar to hydroxyzine and levocetirizine. Do not use these medications while using cetirizine. This medication may interfere with certain laboratory tests, possibly causing false results. Make sure laboratory personnel and all your doctors know you use this drug. OVERDOSE: If overdose is suspected, contact a poison control center or emergency room immediately. Symptoms of overdose may include severe drowsiness. In children, mental/mood changes may occur before drowsiness.
NOTES: Keep all regular medical and laboratory appointments. MISSED DOSE: If you miss a dose, take 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. STORAGE: Store at room temperature away from light and moisture. Do not store in the bathroom. Different brands of this medication may have different storage needs. Check the product package for instructions on how to store your brand, or ask your pharmacist. Keep all medications 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. Information last revised March 2013. Copyright(c) 2013 First Databank, Inc.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.
