Quick Answer: Can You Take Zyrtec Twice A Day?

Can you double up on allergy meds?

Most allergy medicines should not be combined with one another, according to Dr.

Susan Besser, a primary care provider at Mercy Medical Center in Baltimore, Maryland.

“You should not take multiple oral antihistamines together, such as Benadryl, Claritin, Zyrtec, Allegra or Xyzal.

Pick one and take it daily..

Can I take 2 Zyrtec a day?

You can take two in one day and it won’t hurt you in the long run. In studies done on Zyrtec 2 Tabs Per Day rats over a period of two years, there was a significant increase in the occurrence of liver tumors in mice that were given Zyrtec at a dose significantly higher than the maximum clinical dose.

Can you take Zyrtec every 12 hours?

Medically reviewed by Drugs.com. Last updated on . take 1 tablet every 12 hours; do not take more than 2 tablets in 24 hours.

What happens if Zyrtec doesn’t work?

If an antihistamine like Zyrtec suddenly feels as though it’s not working (like your eyes are red or mucus is everywhere), you’re okay to switch to another antihistamine like Allegra to try it out; switching back is okay, too, Erstein said.

How long does Zyrtec last in your system?

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.

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.

Can Zyrtec cause weight gain?

Antihistamines can also make you feel tired and unmotivated to exercise. Antihistamines that can cause weight gain include: Diphenhydramine (Benadryl and others) Cetirizine (Zyrtec)

How many Zyrtec can you take in a day?

The usual dosage for adults younger than 65 years and children who are 6 years and older is one 10-milligram (mg) dose per day. You shouldn’t take more than 10 mg in 24 hours. Your doctor may recommend a 5-mg dose once or twice per day if your allergies are mild.

Is it OK to take 20 mg of Zyrtec?

Response and Effectiveness No tolerance has been found to Zyrtec’s antihistaminic effect. Once discontinued, the skin recovers its normal reactivity to histamine within three days. Taking 10mg of Zyrtec is more effective than taking 5mg; taking 20mg appears not to provide any additional effect.

Is it better to take Zyrtec at night or in the morning?

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. Cetirizine can be taken with or without food.

Is Zyrtec the same as Benadryl?

A main difference between Benadryl and Zyrtec is that Zyrtec tends to cause less drowsiness and sedation than Benadryl. Both Benadryl and Zyrtec are available in generic form and over-the-counter (OTC).

Can you get addicted to Zyrtec?

Your body doesn’t become addicted to antihistamines anymore than your car becomes addicted to having a windshield.