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Antihistamine Drug Cetrizine

Cetrizine is an antihistamine drug that is used in dealing with itching, sneezing, runny nose as well as watery eye which as all allergy symptoms. This drug is also used for the treatment of cold.

Cetrizine is an over- the- counter medicine that can be bought from any pharmacy without the need of a prescription. It is available under the brand names including Zyrtec, Alleroff, Aller- Tec. It is available in the form of tablets, capsules as well as syrup.

It is a very effective as well as a safe drug. It helps in relieving the symptoms of seasonal allergies as well as year- round allergies, but it could not prevent them.

How does it work?

Whenever we come in contact of allergens like inhaling or touching plant pollens, pet dander or mold, allergy is triggered. Allergens trigger the release of histamine, a chemical. This chemical is responsible for causing the symptoms related to the allergic reactions. The allergies affect nose, throat, sinus and the areas of the upper respiratory system.

Cetrizine, which is an anti- histamine drug, helps in blocking the effects caused by histamine and hence, symptomatic relief from the symptoms of allergy.

Uses of Cetrizine

Cetrizine is used in relieving the mild to moderate symptoms of allergy including:

  • Sneezing
  • Watery or itchy eyes
  • Runny nose
  • Itchy throat or nose
  • It also helps in relieving hives that occur as a result of medication or food allergy

Side- effects of Cetrizine

The drug is generally safe to take, but there are some side-effects attached to the drug. They include:

  • Allergic reaction: If you are allergic to any ingredient of this drug, it can lead to severe allergic reaction manifesting as hives, swelling on tongue, face, throat and lips, and difficulty breathing. You must seek medical help as soon as it happens.
  • Uneven, fast or pounding heartbeat
  • Hyperactivity
  • Severe restless feeling
  • Tremors
  • Weakness
  • Insomnia
  • Confusion
  • Urinating less than the usual or not urinating at all
  • Problem with vision

The above mentioned side- effects are serious side- effects of cetrizine and need medical attention. The less serious side- effects attached to cetrizine include:

  • Drowsiness
  • Dizziness
  • Dry mouth
  • Feeling tired
  • Headache
  • Constipation
  • Nausea
  • Cough
  • Sore throat

The above mentioned side- effects of cetrizine are mild and less- serious. They do not need medical attention. They go on their own.

Pregnancy and Breastfeeding

The medication falls under the FDA pregnancy category B. It does not harm the fetus. But, to be on the safer side, you must tell your doctor if you are already pregnant or plan to conceive during the course of the treatment. You must discuss the potential side- effects with the doctor and take the drug if the positive effects weigh over the side- effects.

You must not take the medication if you are a lactating mother. The drug can pass into the breast milk and has the potential to harm the nursing baby.


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