Zyrtec – Allergy relief – dosage, side effects, and warnings


zyrtec sneezing allergiesZyrtec treats allergies

Allergies are a widespread health condition, especially during spring and summer. For people who have to contend with pollen and other environmental irritants, allergens can negatively impact their quality of life for many months at a time each year. Zyrtec (on sale here), an antihistamine manufactured by Pfizer belongs to a modern class of drugs that reduce and eliminate allergic reactions.

How Does Zyrtec Work?

Zyrtec is an antihistamine which works by blocking histamine receptors from releasing chemicals which lead to a cascade of biological reactions culminating in sneezing, itchiness, watery eyes and sniffling. Zyrtec specifically targets histamine H1 receptor in the body, switching off the resultant reaction. What’s great about this new drug is the fact that it doesn’t enter the brain from the bloodstream, which in effect lessens drowsiness and motor impairment compared to first generation drugs such as Allegra and Claritin. Zyrtec is available as a generic under the name of Cetirizine. This antihistamine has been in use since 1996 when it was given the green light by the FDA, and it is safe for children as long as it’s given under the supervision of a qualified doctor.

Before Taking Zyrtec…

Before taking Zyrtec, please tell your doctor or pharmacist if you’re allergic to hydroxyzine, levocetirizine or any other constituent ingredients in this medication. You should also disclose and discuss your medical history, especially if you have kidney or liver problems, have difficulty passing urine due to an enlarged prostate, have diabetes or a mental condition such as anxiety or depression.

Zyrtec is ideal for the following types of allergic reactions:

– Watery eyes
– Runny nose
– Nasal congestion
– Sneezing
– Itching

Some of the side effects of this drug include:

1. Dry mouth
2. Pounding heartbeat
3. Drowsiness
4. Dizziness
5. Stomach pain
6. Tinnitus
7. Constipation
8. Fatigue


Zyrtec may impair your thought process as well as motor skills; because of this, do not drive or operate heavy machinery while on it. Stop taking Zyrtec if you experience breakthrough itching, and see your doctor if your condition doesn’t improve after 6 days of being on this medication.