Hayfever allergy occurs when a person's immune system reacts to substances in the environment that are harmless for most people. These substances are known as allergens and include pollen from trees, grass and weeds. Upon exposure to an allergen, histamine is released and people with hayfever allergies can experience uncomfortable symptoms such as sneezing, runny nose or itchy and watery eyes.

Claratyne is an antihistamine so it hinders the cascade triggered by allergens. By hindering this cascade, Claratyne relieves allergy symptoms that can be caused by different airborne allergens. Claratyne provides 24 hour, non-drowsy relief from hayfever allergy, 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 system triggers a hypersensitivity reaction. To get rid of the substance it thinks is harmful, your body undergoes various reactions and releases inflammatory mediators like histamine.
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.

Outdoor allergies are often called seasonal allergies because they change with the seasons. They're caused by an overreaction of the immune system to ordinarily harmless allergens found outside, such as those from mould spores and tree, grass and weed pollens. While these allergens can be difficult to avoid, you can find easy tips to help minimise your exposure so you can enjoy more of the great outdoors.