Accidentally taking too much medication 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.
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.
ZYRTEC® Allergy Dye-Free Chewables
Adults and children 6 years and older Chew and swallow 2 tablet (10 mg) once daily; do not take more than 1 tablet (10 mg) in 24 hours. A 5 mg product may be appropriate for less severe symptoms. Adults 65 years and over Ask a doctor.
In overdose symptoms can include dizziness, tachycardia, headache drowsiness or agitation. While the current generation of lesser sedating antihistamines do not affect the QT interval at normal doses (unlike the previous generation of medicines), there are concerns there may be some effect in overdose.
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.
Drug class: Antihistamines
Last updated on Mar 11, 2022. one 10 mg tablet once daily; do not take more than one 10 mg tablet in 24 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.
take 1 tablet every 12 hours; do not take more than 2 tablets in 24 hours.
What happens if I overdose on Zyrtec (Cetirizine (Oral/Injection))? Overdose symptoms may include extreme drowsiness, vision problems, agitation, feeling restless and then drowsy or tired, fast heartbeats, stomach pain, nausea, vomiting, trouble walking, or trouble swallowing or speaking.
by Drugs.com
The elimination half-life of Zyrtec is between 8 to 9 hours. It takes approximately 5.5 x elimination half-life for a medicine to be cleared from your system. For Zyrtec this is 5.5 x 9 hours which is about 2 days.
What's the best time of day to take ZYRTEC®? Any time of day works. And ZYRTEC® will continue to work for 24 hours.
Claritin and Zyrtec are effective and safe for most people with minor allergies.
Sandoz issued a voluntary recall of 1,023,430 units of Zyrtec (10 mg) capsules as a result of failed impurities and a specification being reported for impurity at the 21-month stability time point, according to an FDA Enforcement Report.
The Risks of Taking Too Much Allergy Medication
However, taking too much of any medication can be dangerous. If you accidentally take two allergy pills, you may experience side effects such as: Dizziness. Drowsiness.
take 1 tablet every 12 hours; do not take more than 2 tablets in 24 hours.
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.
It is not recommended to mix Zyrtec and alcohol as it can increase the side effects of both substances. Zyrtec (cetirizine) is an antihistamine that is used to treat allergies, hives, and other conditions. Alcohol can also cause drowsiness and dizziness.
If you take too much ZYRTEC you may be more likely to have side effects such as: confusion, diarrhoea, dizziness, tiredness, headache, malaise, dilating of pupil, itching, restlessness, sedation, somnolence (feeling drowsy), stupor, abnormal rapid heart rate, tremor, urinary retention.
For oral dosage form (tablets): Adults—1 to 2 milligrams (mg) every eight to twelve hours as needed. Children 12 years of age and older—0.5 mg to 1 mg two times a day as needed.
Many allergy medications, such as Zyrtec, are recommended every 24 hours. By taking the medication before bedtime you're more likely to get through the night without the active ingredients wearing off or becoming less effective closer to the end of the 24 hour period.
The Journal of Clinical Sleep Medicine in its guidelines for sleep medications does not recommend the use of antihistamines for chronic insomnia. Sedating antihistamines can lead to dry mouth, constipation, retention of urine in the bladder, blurred vision and a drop of blood pressure upon standing.
Antihistamines, mainly used to treat symptoms of hay fever or other allergies, can induce drowsiness by working against a chemical produced by the central nervous system (histamine). These medications can be useful in certain situations, such as for treating sleeplessness related to travel.