Ask a doctor or pharmacist if it is safe for you to take cetirizine if you have any medical conditions. Cetirizine does not increase blood pressure and blood pressure is not listed as a side effect in the product information. vomiting. At 2.5 hours after drug intake they were assessed or reassessed for attention, immediate and delayed (30') memory, cognitive ability and feelings of anxiety and fatigue. You may need urgent medical care. Common side effects of Zyrtec are typically mild and may include: This article explains how Zyrtec works and how it is dosed in adults and children. It can also increase the likelihood of sleep paralysis occurring. Aventyl], protriptyline [Vivactil], trimipramine [e.g. CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. Dextrotuss Oral Suspension is a combination medicine that effectively relieves symptoms of the common cold, such as a blocked nose, runny nose, watery eyes, sneezing, and congestion or stuffiness. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Applies to cetirizine: intravenous solution, oral capsule, oral liquid, oral syrup, oral tablet, oral tablet chewable, oral tablet dispersible. If you blow your nose, you might see a little bit of blood. Follow your doctor's orders or the directions on the label. Constipation is a very rare side effect that happens due to a drug's anticholinergic effect, which means the drug blocks neurotransmitters that affect how the body functions. If your dose is different, do not change it unless your doctor tells you to do so. My mother is 79 and has bouts of wheezing in the morning and at bedtime. Mayo Clinic does not endorse any of the third party products and services advertised. You may report side effects to the FDA at 1-800-FDA-1088. Zyrtec may impair your thinking or reactions. 2023 Dotdash Media, Inc. All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Meet the experts: Jennifer Toh, MD, is an allergist and immunologist at ENT and Allergy Associates. If it is near the time of the next dose, skip the missed dose. The main side effect it can have is inducing frightening or vivid dreams in those who take it. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Elavil], amoxapine [e.g. She specializes in pediatrics and disease and infection prevention. -Some experts recommend: Patients over 65 years of age should start with 5 mg orally once a day. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. This review article briefly introduces allergic rhinitis in the elderly (epidemiology and pathophysiology) and identifies the main goals of treatment in these patients with respect to age-related physiological factors, comorbid conditions and polypharmacy. Older people (adults over 65) are more likely to get these very bad side-effects. It depends on whether you experience any side effects, says Robert Eitches, MD, an allergist at Tower Allergy. Uncommon cetirizine side effects (affect between 1 in 100 and 1 in 1000 people) Diarrhoea. I gave her Zyrtec for a couple of days and now it's like she's on another planet. If you have any questions, consult your pharmacist. For oral dosage forms (Vistaril capsules or suspension): puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue, Shakiness in the legs, arms, hands, or feet, trembling or shaking of the hands or feet, seeing, hearing, or feeling things that are not there. Jasmine Gomez is the Commerce Editor at Womens Health, where she cover the best product recommendations across beauty, health, lifestyle, fitness, and more. It is very important that your doctor check your progress at regular visits. Call your doctor if your symptoms do not improve or if they get worse. Dizziness can be a rare potential side effect and may disappear after your body adjusts to the medication, per The Mayo Clinic. Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. In this case, certain receptors that help gut motility are blocked. Along with its needed effects, cetirizine (the active ingredient contained in Zyrtec) may cause some unwanted effects. This medicine is a white, rectangular (rounded end), scored, film-coated, tablet imprinted with "ZYRTEC" and "10 MG". Zyrtec is an antihistamine that reduces the effects of natural chemical histamine in the body. You may also contact the poison control center at 1-800-222-1222. Cetirizine And Pseudoephedrine (Oral Route), https://www.mayoclinic.org/drugs-supplements/cetirizine-and-pseudoephedrine-oral-route/side-effects/DRG-20061557, Advertising and sponsorship opportunities, Kidney diseaseRemoval of cetirizine and pseudoephedrine from the body may be reduced, Liver diseaseMay be worsened by cetirizine, Thyroid problemsMay be worsened by pseudoephedrine. -Maximum dose: 5 mg/day If you notice any other effects, check with your healthcare professional. These are the most commonly reported side effects of Zyrtec. Using these medicines in very young children might cause serious or possibly life-threatening side effects . Other antihistamines are typically okay to take with Zyrtec as long as they dont make you too sleepy, she adds. Zyrtec - Uses, Side Effects, and More Uses Cetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes /nose, sneezing, hives, and itching. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. Few children have to stop taking it because of side effects. Allergy meds like Zyrtec can .css-7qz8rz{-webkit-text-decoration:underline;text-decoration:underline;text-decoration-thickness:0.0625rem;text-decoration-color:#f7623b;text-underline-offset:0.25rem;color:inherit;-webkit-transition:background 0.4s;transition:background 0.4s;background:linear-gradient(#ffffff, #ffffff 50%, #feebe7 50%, #feebe7);-webkit-background-size:100% 200%;background-size:100% 200%;}.css-7qz8rz:hover{color:#000000;text-decoration-color:border-link-body-hover;-webkit-background-position:100% 100%;background-position:100% 100%;}alleviate some of your symptoms. May make these conditions worse. Some dosage forms listed on this page may not apply to the brand name Zyrtec. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Tofranil], nortriptyline [e.g. Call your doctor for medical advice about side effects. 1 Report this post bret752 | 35-44 | Male | On. Drinking alcohol can increase certain side effects of cetirizine. Talk to your doctor if you are using marijuana (cannabis). Plus, any side effects are typically mild, and a majority of people can take the medication with no issues, says Purvi Parikh, MD, an allergist and immunologist at Allergy & Asthma Network. Anti-anxiety and Sleeping-Pill Medications (Benzodiazepines) Lorazepam, Diazepam, Temazepam, Clonazepam. There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Dry mouth, nose, and throat Drowsiness Dizziness Nausea or vomiting Loss of appetite Constipation Increased chest congestion Headache Excitability (especially in children) Nervousness Benadryl can impair mental and motor functioning, as well as your performance at work or school. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Cetirizine is classed as a non-drowsy (non-sedating) antihistamine, but it does make some people drowsy. Antihistamines don't cause very bad side-effects very often, but sometimes they can. But cetirizine can be found in combination with other medications, such as pseudoephedrine in products such as Zyrtec-D, and pseudoephedrine does increase blood pressure. Your reactions could be impaired. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. The average household teaspoon may not hold the right amount of liquid. Call 911 or rush to your nearest emergency room if you experience any of the following after taking Zyrtec: Zyrtec is available over the counter as a tablet, chewable tablet, and syrup. 2005 - 2023 WebMD LLC, an Internet Brands company. Based on the findings, they may be able to offer allergy shots to gradually desensitize you to common allergens such as pollen. Check with your doctor or nurse immediately if any of the following side effects occur while taking cetirizine: Some side effects of cetirizine may occur that usually do not need medical attention. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. Sublingual immunotherapy (SLIT) Histamines are the culprits behind all those pesky allergy symptoms, like itchy, watery eyes, runny nose, scratchy throat, and sneezing. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Get emergency help immediately if any of the following symptoms of overdose occur: Check with your doctor as soon as possible if any of the following side effects occur: Some side effects may occur that usually do not need medical attention. If you have questions about side effects, contact your health care provider. 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 a particular drug is safe, appropriate or effective for you or anyone else. If it makes you sleepy, the side effect will have likely worn off by the time you wake up, and since the medication can provide relief for 24 hours, you'll still experience relief during the day. -Some experts recommend: Patients over 65 years of age should start with 5 mg orally once a day. Assessment of different cetirizine dosing strategies on seasonal allergic rhinitis symptoms: findings of two randomized trials. This medication is used to relieve allergy symptoms such as watery eyes, runny/stuffy nose, itching eyes /nose, and sneezing. Antihistamines work by preventing the effects of a substance called histamine, which is produced by the body. This medication may interfere with certain laboratory tests (including allergy skin testing), possibly causing false test results. Some examples of CNS depressants are other antihistamines or medicine for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; barbiturates; medicine for seizures; muscle relaxants; or anesthetics, including some dental anesthetics. That said, the recommended dose of Zyrtec for people in this age group is lower than for other adults due to the fact that all second-generation antihistamines are more likely to cause side effects in older people. Loss of appetite Fatigue Nausea and vomiting Constipation Restlessness or moodiness (in some children) Trouble urinating or not being able to urinate Blurred vision Fast, pounding or uneven heartbeat Confusion Sleep problems Weakness or tremors Drug Interactions When Using Antihistamines -Initial dose: 2.5 mg orally once a day More severe hydroxyzine side effects include chest pain, severe headache, hallucinations and trauma nightmares, severe grogginess, respiratory depression, over-sedation and confusion in the elderly, and fainting. In rare cases taking Zyrtec can effect the sleep quality of those who take it. Side effects of anticholinergics Side effects of anticholinergics include: Dry mouth Drowsiness Blurry vision Trouble urinating Confusion The antihistamine in this medicine may cause some people to become drowsy, dizzy, or less alert than they are normally. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. If your dose is different, do not change it unless your doctor tells you to do so. If you miss a dose of this medicine, take it as soon as possible. Zyrtec is also used to treat itching and swelling caused by chronic urticaria (hives). Behavioral issues are not a known side effect of cetirizine in adults or children, IV or oral. Do not crush, break, or chew before swallowing. It's not as common with Zyrtec, but if this does happen to you, Dr. Eitches recommends trying a different antihistamine, adding fiber to your diet, and staying well-hydrated to get things moving again. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Zyrtec is used in adults and children to treat cold or allergy symptoms such as sneezing, itching, watery eyes, or runny nose. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Along with its needed effects, a medicine may cause some unwanted effects. The effects of ZYRTEC on the QTc interval at doses higher than 10 mg have not been studied in children less than 12 years of age. Ask your healthcare professional how you should dispose of any medicine you do not use. Some diabetes medications Anafranil], desipramine [e.g. So if you aren't having allergy symptoms or they get milder during a certain time of the year, that's probably a good time to take a Zyrtec break. May cause side effects to become worse. Do not increase your dose or take this medication more often than directed. Do not double the dose to catch up. Some side effects may not be reported. The medication is "primarily eliminated from your body through the kidneys," says Dr. Parikh. During pregnancy, this medication should be used only when clearly needed. If any of these effects last or get worse, tell your doctor or pharmacist promptly. "That way you wake up in the morning relatively clearer too," he says. Hydroxyzine is an antihistamine. Kristina Duda, BSN, RN, CPN, has been working in healthcare since 2002. 6 years and older: 5 to 10 mg orally once a day Read our, 6 Natural Antihistamines to Help With Allergies, Using Zyrtec for Treating Hives and Allergies, Sore Throat and Runny Nose: Causes and Treatments. There is evidence that certain medications both prescription and over-the-counter are associated with an increased risk of dementia. The amount of medicine that you take depends on the strength of the medicine. Should cetirizine be taken at bedtime or upon awakening? Properly discard this product when it is expired or no longer needed. How long does it stay in the body? Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of hydroxyzine in the elderly. This side effect was much more common with older, first-generation antihistamines such as Benadryl, says Dr. Patel. Children and infants up to 4 years of ageUse is not recommended . Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. When people ages 65 to 75 got jabbed for three years, it relieved symptoms by 55 percent and decreased the amount of allergy meds they needed by 64 percent, according to a 2016 study published in the Annals of Allergy, Asthma & Immunology. Adults25 milligrams (mg) 3 or 4 times a day. The following information includes only the average doses of this medicine. The presence of other medical problems may affect the use of this medicine. Less than 10 percent of Zyrtec poppers will wind up with dry mouth, says Boomershine. These include sleepiness, anxiety, and tremors. Acetylcholine is involved in the initiation of REM sleep (i.e., the sleep stage most commonly associated with dreaming), so if those neurons are inhibited, you may have trouble falling and staying asleep. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. It is created by eHealthMe based on reports of 94,387 people who have side effects when taking Zyrtec from the FDA, and is updated regularly. When you first start taking Zyrtec it is important to watch for these side-effects: Fast heartbeat Pounding or irregular heartbeat Tremors in the hands Trouble sleeping Sudden weakness Confused thinking Feeling hyper or unable to sit still Trouble urinating Blurry vision Inform the patient that side effects are temporary and usually resolve over time. Cookies collect information about your preferences and your devices and are used to make the site work as you expect it to, to understand how you interact with the site, and to show advertisements that are targeted to your interests. And, just like drowsiness, hold off on driving if youre feeling wobbly. So, if your kidneys aren't functioning properly, the medication can accumulate and build up in your blood, which may cause additional damage to your kidneys and severe side effects. There is a very small risk of liver toxicity with long-term use. Up to 14.3% of adults may be affected by drowsiness with cetirizine. All rights reserved. Swallow several times as the tablet dissolves. The most common adverse reactions when starting therapy include: Gastrointestinal problems. Get medical help right away if your condition worsens or if you think you have a serious medical problem (such as a very serious allergic reaction/anaphylaxis). Zyrtec can cause side effects affecting the digestive tract, nervous system, respiratory tract, and others. Do not allow liquid medicine to freeze. Check with your doctor before taking any of the above while you are taking this medicine. Discuss the common side effects of Morphine such as drowsiness, constipation, nausea, vomiting, and difficulty breathing. Ask your doctor or pharmacist about using this product safely. Histamine can cause itching, sneezing, runny nose, and watery eyes. A. It provides allergy relief for 24-hours. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. Turns out blocking it may also trigger anxiety and fast heart rate because acetylcholine regulates heart contractions and blood pressure as well. This is not a complete list of possible side effects. Since the effects of Zyrtec last 24 hours, drowsiness can hit at any time. If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. Pfizer U.S. Pharmaceuticals (2001): 2. By doing so, Zyrtec can help relieve the following seasonal allergy symptoms: Unlike first-generation antihistamines such as Benadryl (diphenhydramine), Zyrtec does not cross the blood-brain barrier that separates the brain from the rest of the body. If your doctor has prescribed this medication, take it as directed, usually once daily. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. Some people, especially the elderly or children, may also find their thinking, judgement, and coordination impaired. Does Zyrtec interact with other drugs you are taking? You should not use Zyrtec if you are allergic to cetirizine or levocetirizine. Corinne Savides Happel, MD, is board-certified in allergies/immunology, with a focus on allergic skin disorders. Learn how we can help This leads to clearing of nasal congestion, but it may also cause an increase in blood pressure in patients who have high blood pressure. Avoid alcohol and be careful about driving if the med hits you with the sleepies, per the Zyrtec site. Allergic Rhinitis Chronic Urticaria Read More Related Products List of related products Zyrtec 10 MG Drops Zyrtec 5 MG Syrup Data sources include IBM Watson Micromedex (updated 2 Apr 2023), Cerner Multum (updated 17 Apr 2023), ASHP (updated 10 Apr 2023) and others. Discuss the risks and benefits with your doctor. Purvi Parikh, MD, is an allergist and immunologist at Allergy & Asthma Network. There are some natural alternatives that may help if you suffer from seasonal allergies: Zyrtec (cetirizine) is a second-generation antihistamine used to relieve symptoms of seasonal allergies such as sneezing, runny nose, and itchy eyes. Skin problemsUse with caution. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. In these cases, your doctor may want to change the dose, or other precautions may be necessary. Stop using Zyrtec if you develop an allergy to Zyrtec. Avoid drinking alcohol while taking Zyrtec (cetirizine capsules and tablets). Generic Name. In Canada - Call your doctor for medical advice about side effects. -Treatment of uncomplicated skin manifestations of chronic idiopathic urticaria in patients 6 months and older. Zyrtec-D can also cause these additional side effects: increased heart rate. -Maximum dose: 10 mg/day Zyrtec (cetirizine) and Claritin (loratidine) are two popular brands. You may report side effects to Health Canada at 1-866-234-2345. The recommended dose for adults and children ages 6 to 64 is: The recommended dose for children ages 2 to 6 and adults 65 and over is: Zyrtec is actually of the safest antihistamine to use in adults 65 and over. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. (FYI: This is a risk with all medications, not just Zyrtec.) They can add to sleepiness caused by Zyrtec. It is a second-generation antihistamine that works by blocking the action of a chemical called histamine. Cetirizine is an antihistamine used to relieve allergy symptoms such as watery eyes, runny nose, itching eyes/nose, sneezing, hives, and itching. Antihistamines may cause dryness of the mouth, nose, and throat. Additionally, if you take any medications that can cause sedation, such as benzodiazepines, you should talk with your doctor before taking Zyrtec, says Dr. Parikh, because combining the two may cause worsened side effects. Sinequan], imipramine [e.g. The easiest way to lookup drug information, identify pills, check interactions and set up your own personal medication records. Call your doctor if your symptoms do not improve, if they get worse, or if you also have a fever. Things to remember when you fill your prescription. -Maintenance dose: 2.5 mg orally 2 times a day OR 5 mg orally once a day Measure liquid Zyrtec Syrup carefully. Measure the oral liquid with a marked measuring spoon, oral syringe, or medicine cup. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. Canada residents can call a provincial poison control center. If you've ever slept 14 hours after popping a Benadryl, you're well aware that some allergy meds can seriously knock you out. Uses. However, elderly patients are more likely to have unwanted side effects (eg, confusion, drowsiness) and age-related liver, kidney, or heart problems, which may require caution and an adjustment in the dose for patients receiving hydroxyzine. If you experience a sore throat while taking Zyrtec, it's likely because your mucous membranes, the inner lining of your body and organs, become drier, causing the tissue in your mouth to also. So all behavioral issues seem more like a result of her age than her medicine. 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. 1. Do not use these medications while using cetirizine. If you are using the liquid form of this medication, measure the dose carefully using a special measuring device/spoon. Avoid driving or hazardous activity until you know how this medicine will affect you. Get emergency medical help if you have signs of an allergic reaction to Zyrtec: hives; difficult breathing; swelling of your face, lips, tongue, or throat. Uses: Available for Android and iOS devices. Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products). Cetirizine (Zyrtec) Codeine Furosemide (Lasix) Loperamide (Imodium) Loratadine (Alavert, Claritin) Ranitidine (Zantac) Tizanidine (Zanaflex) A full list of anticholinergic drugs can be found here. If you miss a dose of this medicine, take it as soon as possible. Do not drive or do anything that could be dangerous until you know how this medicine affects you. Older adults may need to take a lower than normal dose. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. .css-26w0xw{display:block;font-family:NationalBold,Helvetica,Arial,Sans-serif;font-weight:bold;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-26w0xw:hover{color:link-hover;}}@media(max-width: 48rem){.css-26w0xw{font-size:1.18581rem;line-height:1.2;margin-bottom:0.625rem;}}@media(min-width: 40.625rem){.css-26w0xw{line-height:1.2;}}@media(min-width: 48rem){.css-26w0xw{font-size:1.28598rem;line-height:1.2;margin-bottom:0rem;}}@media(min-width: 64rem){.css-26w0xw{font-size:1.575rem;line-height:1.1;margin-bottom:-0.5rem;}}14 Types Of Bug Bites You Shouldnt Ignore, Jen Garner Shares Her "Secret" for Thinning Hair, An Infertility Support Group Helped Me Heal, The Bachelors Sarah Herron Baby Loss Essay, More Daily Magnesium Linked To Lower Dementia Risk, The 10 Best HEPA Vacuums For Allergies And Mold. Examples of Tricyclic antidepressants are amitriptyline [e.g. Decongestants produce a narrowing of blood vessels. This medicine may cause a serious skin condition called acute generalized exanthematous pustulosis (AGEP). If an overdose occurs call your doctor or 911. When you are allergic to something, your body releases histamines that cause congestion, runny nose, sneezing, itching, swelling of the nasal passages, hives, skin rashes, or itchy and runny eyes. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Other side effects not listed may also occur in some patients. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. For this medicine, the following should be considered: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. The most common side effects, usually mild to moderate, are sleepiness, fatigue, pharyngitis, dry mouth and dizziness. Zyrtec (cetirizine) is an over-the-counter (OTC) antihistamine medication that relieves symptoms of seasonal allergy, including itching, sneezing, and a runny nose. -Maximum dose: 5 mg/day If you are using the rapidly-dissolving tablet, allow the tablet to dissolve on the tongue and then swallow, with or without water. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. This medicine will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). Should I avoid certain foods while taking Zyrtec? This is not a complete list of side effects and others may occur. Sexual side effects. Keep all medications away from children and pets. Breastfeeding . You should also not drink alcohol while taking either of these medications because it can make these side effects worse. You can use the study as a second opinion to make health care decisions. In the case of a hydroxyzine overdose, seizures may result. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. This medication passes into breast milk. Do not take two doses at one time. -Maintenance dose: 2.5 mg orally once to 2 times a day Portions of this document last updated: April 01, 2023, Original article: https://www.mayoclinic.org/drugs-supplements/hydroxyzine-oral-route/side-effects/drg-20311434. Children 4 to 12 years of ageUse and dose must be determined by your doctor. Alcohol or marijuana (cannabis) can make you more drowsy. Give it time, but always check in with your doctor if youre concerned. In children 12 years of age and older, this medicine is not expected to cause different side effects or problems than it does in adults. Neurological effects. If you have any questions about this, check with your doctor. Do not double doses. Response (reduction of baseline symptoms 50 percent) with SSRIs increased as the dose increased to approximately 20 to 40 mg/day fluoxetine equivalents, with . Keep from freezing. The following information includes only the average doses of this medicine. Copyright: Merative US L.P. 1973, 2023. Zyrtec vs Claritin: Which is more effective for allergies? diarrhea. Cerner Multum, Inc. "Australian Product Information." However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Most of these side effects tend to dissipate after a few weeks of therapy. This document does not contain all possible drug interactions. Chewable tablets should be chewed and not swallowed whole. When you have an allergic response, your tissue secretes more fluid (hello runny nose, watery eyes), and antihistamines dry you up. 2018 Jan-Dec;9:2152656718783630. doi:10.1177/2152656718783630, Corsico AG, Leonardi S, Licari A, et al. It is best to wait until cetirizine completely leaves your body before you drink alcohol, which may take up to 40 hours (almost 2 days).