In dermatology, cetirizine has proven to be effective in the treatment of various forms of urticaria and it reduces the pruritus of atopic eczema. For these conditions, frequently doses higher than 10 mg (up to 40 mg) are recommended to achieve the best benefit.
Taking more than the usual dose is unlikely to harm you or your child. If you take an extra dose, you might get some of the common side effects. If this happens or you're concerned, contact your doctor.
The maximum recommended daily dose is 20 mg, do not exceed this dose, unless told to do so by your doctor. The usual dose of ZYRTEC oral solution is 10 mL, once a day.
The recommended dose range of cetirizine for the treatment of hay fever, allergies, or hives is 5 to 10 mg. The maximum recommended dose for cetirizine is 10 mg daily.
Taking too much cetirizine (Zyrtec) or using more than one medication containing an antihistamine (including products used on the skin) can lead to an accidental overdose and cause serious side effects, such as seizures, hallucinations, or even death.
ZYRTEC® Allergy Relief Tablets
Adults under 65 and children 6 years and older One 10 mg tablet once daily; do not take more than one 10 mg tablet in 24 hours.
For relief of symptoms from seasonal or yearly allergies: Adults and children 12 years of age and older—Take one tablet two times a day with or without food. Children 4 to 12 years of age—Use and dose must be determined by your doctor. Children and infants up to 4 years of age—Use is not recommended .
For cetirizine
Adults—5 to 10 milligrams (mg) once a day. Children 6 years of age and older—5 to 10 mg once a day. Children 4 to 6 years of age—2.5 mg once a day, up to a maximum of 5 mg once a day or 2.5 mg twice a day. Children and infants up to 4 years of age—Use is not recommended .
Overdose with drowsy antihistamines:
Vomiting. Increasing heart rate. Confusion. Loss of balance.
Antihistamines can stop working because your allergies might be getting worse or you might have immune system changes due to aging. You also might not be taking the medication as directed. If you take an antihistamine after being exposed to an allergy trigger, it won't work as well.
Common medications like Zyrtec, Allegra, Flonase, and Claritin don't usually stop working. It's time to check for new allergies if your nose is still stuffy and you can't stop sneezing after taking your regular allergy medicine. You may need a new treatment plan, not just more medication.
Yes. Cetirizine HCl is the active ingredient in all ZYRTEC® allergy medications. Many of our products contain 10 mg of cetirizine to provide 24-hour relief from your allergy symptoms. ZYRTEC-D® contains 5 mg plus a decongestant and is a 12-hour product.
Taking 10mg of Zyrtec is more effective than taking 5mg; taking 20mg appears not to provide any additional effect. Food has no effect on the overall absorption of Zyrtec; however, it may increase the time it takes for peak levels of Zyrtec to be reached in the blood.
Antihistamines that can cause weight gain include: Diphenhydramine (Benadryl and others) Cetirizine (Zyrtec) Levocetirizine (Xyzal)
If a healthy adult takes only a slightly higher dose of antihistamine, such as accidentally taking two pills instead of one, their symptoms may not be serious, or they may not have any symptoms. However, a larger overdose, especially in children or older adults, may cause serious symptoms.
Even if you're severely suffering from allergies, with incredibly watery eyes or a scratchy throat, it's not recommended to take more than the daily dosage as there can be side effects that occur.
CETIRIZINE (se TI ra zeen) prevents and treats allergy symptoms, such as red, itchy eyes, sneezing, a runny or stuffy nose, or hives. It works by blocking histamine, a substance released by the body during an allergic reaction. It belongs to a group of medications called antihistamines.
cetirizine food
You should avoid or limit the use of alcohol while being treated with cetirizine. Do not use more than the recommended dose of cetirizine, and avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you.
Cetirizine reaches peak plasma concentration after approximately one hour. Its effects typically begin after 20 to 60 minutes and persist for at least 24 hours. Food does not affect the extent of exposure (AUC) of cetirizine, but the time to attain peak concentration is delayed by 1.7 hours.
by Drugs.com
This is a therapeutic duplication and it is usually recommended to take only one antihistamine at any time, however if you have been prescribed to take both together then it is appropriate. If you do experience any odd symptoms please see your doctor.
“Zyrtec is found to be more potent, or stronger, in laboratory studies, compared with Claritin,” says Dr. Kung. “It also reaches a higher concentration in the skin, which can be more helpful for skin-related allergies. However, Zyrtec has a greater chance of making you sleepy while taking it.”
The onset of effect occurs within 20 minutes in 50% of people and within an hour in 95%. Effects persist for at least 24 hours following a single dose of cetirizine.
You should not double up on antihistamines or take two different types in one day, unless your doctor specifically directs you to do so. Antihistamine dosage is based on rigorous testing, and exceeding the recommended daily amount can cause unintended side effects like hallucinations or seizures.
The Allegra Adult 24-Hour Allergy Relief easily tops our list thanks to the medicine's quick-acting formula to tackle your allergy symptoms any time of the day.