Can you use Zyrtec to treat allergies and Hives?

Zyrtec is an antihistamine that can treat hives and seasonal allergies like hay fever. It is commonly recommended for children aged 2 and older and for adults. In this article, you will learn how Zyrtec works for treating hives and seasonal allergies, its possible side effects, and how it compares against other antihistamines.

Zyrtec Uses

Zyrtec is approved for the treatment of hives and symptoms of allergic rhinitis. This includes a runny nose, sneezing, and itchy eyes.

How It Works

When you get an allergic reaction, your body releases histamines into your blood. These chemicals are produced when the immune system mistakenly sees an allergen as an invader. By taking an antihistamine like Zyrtec, you can reverse your body’s reactions and prevent hives.

Zyrtec vs. Other Antihistamines

Antihistamines are divided into two classes which are first-generation and second-generation. Examples of first-generation antihistamines include Benadryl and Vistaril, which are effective for treating hives but can occasionally cause drowsiness.

In addition to Zyrtec, other second-generation antihistamines include Xyzal, Allegra, and Claritin. Zyrtec is a good option for hives and allergies. However, it can cause fatigue and sedation in certain people. These symptoms are mild in first-generation antihistamines but more pronounced with medications like Allegra or Claritin.

Overall, Zyrtec seems more effective for controlling allergies than Allegra or Claritin. That said, each allergy situation is unique, and it is often impossible to predict which medication will work best.

Before Taking Zyrtec

Your allergist or healthcare provider can advise you on which antihistamines are for you. With children, it is important to compare the benefits of treatments against the possible risks and side effects.

Zyrtec During Pregnancy

During pregnancy, your allergic rhinitis or hives could either worsen, improve, or stay the same. Zyrtec has a pregnancy category “B” rating, meaning it is considered safe for use during pregnancy.

On the other hand, certain allergy medications should be avoided during pregnancy. These include intranasal antihistamines and first-generation antihistamines like Benadryl.

Side Effects

With Zyrtec, you have a very low chance of developing side effects. That said, common ones include:

● Sedation
● Dizziness
● Fatigue
● Dry mouth

Warnings and Interactions

While taking Zyrtec, you could still have an allergic reaction. Symptoms include a bloody nose, difficulty breathing, hives, and swelling. If this happens, you need to get medical attention immediately.


Zyrtec is an antihistamine used to relieve hives and symptoms of allergic rhinitis. It has fewer side effects than first-generation antihistamines like Benadryl and is considered preferable in most cases.