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 5-mg dose once or twice per day if your allergies are mild.Cetirizine is a newer, second-generation antihistamine. In a study of 18 months duration in patients 12 months and older, insomnia occurred more frequently in patients who received cetirizine compared to patients who received placebo (9% v. 5.3%). In a 35-day study in children aged 5 to 12, no tolerance to the antihistaminic (suppression of wheal and flare response) effects of cetirizine hydrochloride was found. Cetirizine hydrochloride oral solution is a colorless to slightly yellow oral solution containing cetirizine hydrochloride at a concentration of 1 mg/mL (5 mg/5 mL) for oral administration. Our website services, content, and products are for informational purposes only. Cetirizine is an allergy medication that you can buy over the counter (OTC) at a pharmacy. These drugs contain both cetirizine and the decongestant pseudoephedrine.Pseudoephedrine is a stimulant and can make certain health conditions worse. 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. Data from other studies where cetirizine hydrochloride was administered to patients 6 to 23 months of age were consistent with the findings in this study.The effects of cetirizine hydrochloride on the QTc interval at doses higher than 10 mg have not been studied in children less than 12 years of age.In a six-week, placebo-controlled study of 186 patients (aged 12 to 64 years) with allergic rhinitis and mild to moderate asthma, cetirizine hydrochloride 10 mg once daily improved rhinitis symptoms and did not alter pulmonary function. All rights reserved. The combination caused an increase of 17.4 msec, equal to the sum of the individual effects. Unlike first-generation antihistamines, cetirizine is less likely to cause side effects such as dangerous drowsiness, dry mouth, blurred vision, and overheating.That said, Cetirizine can cause adverse effects, such as:Tell your doctor about any unexpected side effects that you have while taking cetirizine. 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. Most medications continue to … Cetirizine hydrochloride oral solution is a colorless to slightly yellow oral solution containing cetirizine hydrochloride at a concentration of 1 mg/mL (5 mg/5 mL) for oral administration. No interactions were observed. Theophylline (Theo-24) 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. The dosage in this age group can be increased to a maximum dose of 5 mg per day given as 1 teaspoonful oral solution once a day, or one ½ teaspoonful oral solution given every 12 hours.The recommended dose of cetirizine hydrochloride oral solution in children 6 months to 23 months of age is 2.5 mg (½ teaspoonful) once daily. In placebo-controlled trials, the incidence of discontinuations due to adverse reactions in pediatric patients receiving up to 10 mg of cetirizine hydrochloride was uncommon (0.4% on cetirizine hydrochloride vs. 1% on placebo).Table 1 lists adverse experiences which were reported for cetirizine hydrochloride 5 and 10 mg in pediatric patients aged 6 to 11 years in placebo-controlled clinical trials in the United States and were more common with cetirizine hydrochloride than placebo. © 2005-2020 Healthline Media a Red Ventures Company.

The safety of cetirizine in 399 patients aged 12 to 24 months has been demonstrated in a placebo-controlled 18-month trial, in which the average dose was 0.25 mg/kg bid, corresponding to a range of 4 to 11 mg/day. The recommended doses for the pediatric population are based on cross-study comparisons of the pharmacokinetics and pharmacodynamics of cetirizine in adult and pediatric subjects and on the safety profile of cetirizine in both adult and pediatric patients at doses equal to or higher than the recommended doses. In the first study, a placebo-controlled crossover trial, cetirizine hydrochloride was given at doses up to 60 mg per day, 6 times the maximum clinical dose, for 1 week, and no significant mean QTc prolongation occurred.