ZYRTEC® provides 24-hour relief, all day and all night.
How many Zyrtec can I take in 24 hours?
Adults and children 6 years and over: one 10 mg tablet once daily; do not take more than one 10 mg tablet in 24 hours.
Can Zyrtec be taken twice a day?
It’s usual to take cetirizine once a day. Children sometimes take it twice a day. Cetirizine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy. Common side effects include headaches, dry mouth, feeling sick, dizziness, stomach pain and diarrhoea.
Is Zyrtec D 12 or 24 hour?
The dose of Zyrtec-D for adults and children 12 years and over is 1 tablet every 12 hours; not more than 2 tablets in 24 hours.
Why is zyrtec taken at night?
Cetirizine can be taken at any time of the day. In most people it is non-sedating, so they take it in the morning. However, a percentage of people do find it to be sedating so if it does make you drowsy it is best to take it in the evening.
Can I take 20 mg of Zyrtec a day?
Four small studies suggest that cetirizine 20 mg daily may improve symptoms in adults with severe chronic urticaria. In Okubo et al (2013), itching and weals improved in people who took cetirizine 20 mg daily or olopatadine 5 mg twice daily as a dose increase from cetirizine 10 mg.
Can I take 40 mg of Zyrtec?
In fact, current European guidelines recommend up to four times the usual recommended dose of antihistamine in patients who symptoms persist with standard therapy . For example, doses of up to 40 mg of cetirizine, 20 mg of desloratadine, and 480 mg of fexofenadine may be used in adults.
How long does Zyrtec last in your system?
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.
Can Zyrtec make you gain weight?
Antihistamines that can cause weight gain include: Diphenhydramine (Benadryl and others) Cetirizine (Zyrtec)
How quickly does Zyrtec work?
Most people experience at least 24 hours of relief after a single dose. Zyrtec, on the other hand, is fast acting. People who take it may feel relief in as little as one hour. Antihistamines like Zyrtec and Claritin are designed to calm the histamine reaction your body has when it’s exposed to an allergen.
Does Zyrtec make a 12 hour pill?
ZYRTEC-D 12 HOUR Extended Release Tablets are indicated for the relief of nasal and non-nasal symptoms associated with seasonal or perennial allergic rhinitis in adults and children 12 years of age and older.
Can Zyrtec cause anxiety?
Antihistamines are known to cause extreme drowsiness; however, in certain people, they can cause insomnia, excitability, anxiety, restlessness, and a rapid heart rate.
Is Zyrtec good for stuffy nose?
Try ZYRTEC®-D to powerfully clear your blocked nose and relieve your other allergy symptoms, so you can breathe easier all day. * *Provides 12 hour relief of nasal congestion, sneezing, runny nose, itchy, watery eyes and itchy nose and throat.
Can Zyrtec cause depression?
The over-the-counter allergy medication cetirizine (Zyrtec and generic) has been linked to depression, as has another type of drug, montelukast (Singulair), which is often used to treat people with allergic asthma.
Should I take Zyrtec everyday?
Zyrtec is usually taken once a day. During the pollen season, your doctor may advise you to take it every day if you suffer from seasonal allergic rhinitis.
Can you get addicted to Zyrtec?
You CAN become dependent on Zyrtec and have itchy withdrawals from the allergy drug.