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Allergy Essentials

Outdoor Allergies
Understanding Seasonal Allergies
Indoor Allergies
About Pet Allergies
Allergy Essentials
Understanding Allergy Symptoms

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Allergy Essentials
American Tree Pollen Allergy Guide

Tree pollen is the first seasonal allergen of the year. In the south, trees start releasing their pollen as early as January until June.

Allergy Essentials
Types of Allergy Medicine

There are so many different allergy medications to choose from. Find out what kind of treatments are available, and how each of them works to relieve your symptoms.

Avoid Blowing Your Nose & Find Congestion Relief With ZYRTEC-D
Allergy Essentials
All About Decongestants

Muddling through congestion along with your sneezing and watery eyes? It may be time for an allergy medicine with a decongestant. Learn more about this allergy alternative.

Woman sneezing from allergies
Allergy Essentials
WHAT CAUSES SNEEZING FROM ALLERGIES?

You know that feeling when your nose starts to twitch? That’s the start of a sneeze. You might be surprised to find that a sneeze starts with your nervous system.

Allergy Essentials
UNDERSTANDING ALLERGY SYMPTOMS

Can you tell if it’s a cold or signs of allergies? Learn about five common allergy symptoms and how to get relief.

Allergy Essentials
IS IT A COLD OR ALLERGIES?

It’s often hard to tell the difference between a cold and allergies.

Allergy Essentials
How to Prevent Nighttime Allergies

Get tips on how to keep your bedroom allergen free, and learn about nighttime allergy triggers, so you can get a good night's sleep.

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Living with Allergies

Learn to manage your allergies better with everyday tips and tools.

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Get the Zyrtec AllergyCast App

Get the ZYRTEC® AllergyCast® app for your daily pollen forecast.

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