Switch Language

200+ Allergens

From your beautiful garden to your furry friends, there are over 200 different airborne allergens out there that can cause allergies to flare up. Learn more about these triggers and find out how Claritin® allergyX allergy
An exaggerated response of the immune system to a substance that is ordinarily harmless.
products can help relieve your symptoms.

What Are Airborne Allergies?

The 200+ different airborne allergens come from four categories, including animals, moldX mold
Parasitic, microscopic fungi (like Alternaria) that float in the air like pollen. Mold spores are a common trigger for allergies and can be found in damp areas, such as the basement or bathroom, as well as outdoors in grass, leaf piles, hay, mulch or under mushrooms.
, dust mitesX dust mites
A common trigger for indoor allergies. They are microscopic mites that live in the fibers of pillows, mattresses, blankets and carpet. They live off of our dead skin cells. Inhalation of their droppings can cause allergic reactions such as runny nose, sneezing and nasal congestion.
, and the pollenX pollen
A fine, powdery substance, typically yellow, consisting of microscopic grains discharged from the male part of a flower called stamens or from the male cone of a tree.
from grass, trees, weeds and flowers.

These sources of airborne allergens are light so they can travel through the air and stick to your clothes and hair. In fact, ragweed pollen has been found as far as 400 miles out to sea and two miles up in the atmosphere.1 And one study showed the most common cat allergenX allergen
A substance that your body perceives as foreign and harmful; initiates the allergic reaction.
was detected in 100 percent of airplane seats tested.2

A chart categorizing the types of allergens that Claritin can help relieve

Claritin® Provides 24-Hour Relief of Symptoms That Can Be Triggered by These Allergens

To understand how Claritin® provides 24-hour, non-drowsy relief from tough allergyX allergy
An exaggerated response of the immune system to a substance that is ordinarily harmless.
symptoms, it’s important to know what causes an allergic reaction.

When you take a breath or rub your nose or eyes, allergens enter your body and your immune systemX immune system
The body’s defense system that protects us against infections and foreign substances.
triggers a hypersensitivity reaction. To get rid of the substance it thinks is harmful, your body undergoes various reactions and releases inflammatory mediators like histamineX histamine
A naturally occurring substance that is released by the immune system after being exposed to an allergen. When you inhale an allergen, mast cells located in the nose and sinus membranes release histamine. Histamine then attaches to receptors on nearby blood vessels, causing them to enlarge (dilate)…

When the histamine binds to receptors on other cells in your body, it causes you to experience allergy symptoms, including runny nose, sneezing, itchy/watery eyes, itchy nose or throat, nasal congestion and sinus pressure.

How Claritin® Works

Claritin® is an antihistamineX antihistamine
Medication that relieves symptoms of sneezing, itching and runny nose by blocking histamine receptors.
so it hinders the cascade triggered by allergens. By hindering this cascade, Claritin® relieves allergy symptoms that can be caused by 200+ different airborne allergens.

When to Take Claritin®

Follow label indications. Claritin® should be taken when you experience allergy symptoms like sneezing, running nose or itchy, watery eyes.



  1. Ragweed Pollen Allergy. Asthma and AllergyX Allergy
    An exaggerated response of the immune system to a substance that is ordinarily harmless.
    Foundation of America. Accessed December 21, 2017.
  2. Countless Tiny Creatures May Be Traveling for Thanksgiving Right Alongside You. Claritin Blue Sky Living®. Accessed October 15, 2017.

Today's pollen forecast


see full forecast

Information provided by Pollen.com


A box of Claritin 12 hour reditabs

Claritin® RediTabs® 12-Hour

Non-drowsy Claritin® RediTabs® offer all-day allergy relief in a melt-in-your-mouth tablet that dissolves instantly without needing water.