Cetirizine – What You Should Know

What is Cetirizine?

Cetirizine is an antihistamine medication used to relieve allergy symptoms such as sneezing, runny nose, itchy or watery eyes, and itching of the throat or nose. It is also used to treat hives and itching caused by chronic urticaria (a skin condition).

It is available over the counter in many countries and is commonly sold under brand names like Zyrtec or Reactine.

Uses of Cetirizine

Cetirizine helps in managing:

• Seasonal allergic rhinitis (hay fever)

• Perennial allergic rhinitis (year-round allergies)

• Hives (urticaria)

• Itchy skin rashes

• Allergic conjunctivitis

• Mild reactions to insect bites or food

How Does It Work?

When your body comes in contact with allergens (like pollen, dust, pet dander), it releases a chemical called histamine, which causes allergic symptoms.

Cetirizine blocks histamine receptors, helping to reduce or prevent those symptoms.

Dosage (General Guidelines)

Always follow your doctor’s instructions or the package label.

• Adults & children above 12 years: 10 mg once daily

• Children 6–12 years: 5–10 mg per day (can be split into two doses)

• Children 2–6 years: 2.5–5 mg per day (doctor’s advice needed)

• Elderly or kidney/liver disease patients: Lower doses may be recommended

  
  
  
  

Common Side Effects

• Drowsiness or tiredness (less than older antihistamines)

• Headache

• Dry mouth

• Stomach upset

• Dizziness

Note: Most people tolerate cetirizine well. It usually causes less drowsiness compared to older antihistamines like chlorpheniramine or diphenhydramine.

Precautions

• Avoid alcohol or other sedatives while taking cetirizine.

• If you are pregnant or breastfeeding, consult your doctor before use.

• Do not drive or operate machinery if you feel drowsy after taking the tablet.

• Inform your doctor if you have kidney or liver problems.

Interactions

Cetirizine may interact with:

• Alcohol

• Sleeping pills

• Muscle relaxants

• Anti-anxiety or anti-seizure medications

Natural Alternatives for Allergy Relief (Supportive Only)

• Saline nasal rinse to clear allergens

• Steam inhalation for nasal congestion

• Honey (local raw honey may help with pollen allergies)

• Turmeric and ginger (anti-inflammatory)

• Quercetin-rich foods (apples, berries, onions)

These can support your body but are not replacements for medication.

Summary

Cetirizine is a safe and effective medicine for treating allergy symptoms and hives. While generally well-tolerated, it’s important to follow proper dosage and take necessary precautions. If symptoms persist or worsen, consult your doctor promptly.