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Difference between Zyrtec and Allegra

Difference between Zyrtec and Allegra

Zyrtec and Allegra are two of the most popular medications used to treat allergies. They both work in similar ways, but there are some important differences between them. In this post, we’ll take a closer look at these differences and help you decide which one is right for you.

What is Zyrtec?

Zyrtec is a medication that is used to treat allergies. It works by blocking the body’s histamine response to allergens. Zyrtec is available in both over-the-counter and prescription forms. The over-the-counter version is intended for people who have mild allergies, while the prescription version is for people who have more severe allergies. Zyrtec is generally well tolerated, but some side effects may occur, such as dry mouth, drowsiness, and fatigue. Zyrtec should not be used by people who are pregnant or breastfeeding.

What is Allegra?

Allegra is a prescription medication used to treat allergy symptoms. It belongs to a group of drugs called antihistamines. Allegra works by blocking the action of histamine, a substance in the body that causes allergic symptoms.

  • Allegra is available as a tablet, orally disintegrating tablet, and suspension (liquid) to take by mouth. It is usually taken with or without food once or twice a day.
  • Allegra may also be used for purposes not listed in this medication guide. Follow all directions on your prescription label and read all medication guides or instruction sheets. Use Allegra exactly as directed.
  • Allegra is an effective medication that can be used to relieve allergy symptoms. However, it is important to follow the instructions on the prescription label and take Allegra exactly as directed.

Allegra should not be taken more frequently than prescribed, as this may increase the risk of side effects. Allegra may interact with other medications, so it is important to tell your doctor about all the medications you are taking before starting treatment with Allegra. Be sure to ask your doctor about any possible Allegra drug interactions.

Difference between Zyrtec and Allegra

Zyrtec and Allegra are both medications used to treat allergies. Zyrtec is a brand name for the drug cetirizine and Allegra is a brand name for the drug fexofenadine.

  • Both Zyrtec and Allegra are antihistamines, which work by blocking histamine from binding to histamine receptors. Histamine is a chemical that is released by the body in response to an allergy trigger.
  • Zyrtec and Allegra are available in over-the-counter and prescription forms. Zyrtec is approved for use in children as young as 6 months old, while Allegra is not approved for use in children under the age of 4.
  • Zyrtec is typically taken once daily, while Allegra is taken twice daily. Zyrtec may cause drowsiness, while Allegra generally does not. Zyrtec also has a higher risk of causing dry mouth than Allegra.


The two medications, Zyrtec and Allegra, are both effective in treating allergies. However, they work differently in the body and have different side effects. It is important to talk to your doctor about which medication will work best for you.

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