Zyrtec Tablet Side Effects in Pakistan

Zyrtec Tablet side effects — a complete guide. From common effects to serious warnings — everything you need to know is on this page.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-03-30

Side Effects

Quick Answer

Common side effects of Zyrtec Tablet include drowsiness and dry mouth. Serious effects such as severe dizziness or fatigue require immediate medical attention. Most patients tolerate Zyrtec Tablet well at the correct dose. Contact your doctor if any side effect persists or worsens.

Side Effects at a Glance

Common

Drowsiness
Dry mouth
Headache

Serious — See a Doctor

Severe dizziness or fatigue
Nausea or stomach upset
Breathing issue

When to See a Doctor Immediately

Severe dizziness or fatigue
Nausea or stomach upset
Persistent side effects

Zyrtec Tablet Side Effects (Nuksanat)

Zyrtec Tablet (Cetirizine) is generally safe when taken at the correct dose. However, like all medicines, it can cause side effects in some patients.

Common Side Effects (Aam Nuksanat)

Drowsiness
Dry mouth
Headache

These side effects are usually mild. If they continue, inform your doctor.

Serious Side Effects (Sanjeedah Nuksanat)

Severe dizziness or fatigue — see a doctor immediately
Nausea or stomach upset — see a doctor immediately
Breathing issue — see a doctor immediately

When to See a Doctor (Kab Doctor Se Milna Zaroori Hai)

Severe dizziness or fatigue
Nausea or stomach upset
Persistent side effects

Warnings and Precautions (Ihtiyat)

If you are allergic to cetirizine
Have severe kidney impairment
Are a child under six years

Side Effects Summary Table

Type	Side Effect	Action
Common	Drowsiness	Monitor / inform doctor
Common	Dry mouth	Monitor / inform doctor
Common	Headache	Monitor / inform doctor
Serious	Severe dizziness or fatigue	See a doctor immediately
Serious	Nausea or stomach upset	See a doctor immediately

Reporting Side Effects

If you notice any unexpected side effect, report it on the DRAP pharmacovigilance portal: https://www.dra.gov.pk/pharmacovigilance

The information in this guide is for educational purposes only. If you notice any side effect, contact your doctor or pharmacist.

Frequently Asked Questions

What are the most common side effects of Zyrtec Tablet?

The most commonly reported side effects of Zyrtec Tablet include drowsiness and dry mouth. These are usually mild and go away on their own. Inform your doctor if they persist.

Can Zyrtec Tablet cause allergic reactions?

Yes, like all medicines, Zyrtec Tablet can cause allergic reactions in some people. Signs include rash, itching, swelling, or difficulty breathing. Stop use and seek medical help immediately if this happens.

Is Zyrtec Tablet safe to take for a long time?

Long-term safety depends on the condition and the patient. Your doctor will monitor for any signs of severe dizziness or fatigue if continued use is needed.

What should I do if I experience side effects from Zyrtec Tablet?

For mild side effects, inform your pharmacist. For serious effects such as severe dizziness or fatigue, stop the medicine and contact your doctor immediately or go to the nearest hospital.

Does Zyrtec Tablet affect the liver or kidneys?

Zyrtec Tablet may require dose adjustment in patients with liver or kidney impairment. Your doctor will advise based on your test results and overall health condition.

Brand alternatives, same-class options, and other medicines used for the same conditions as Zyrtec Tablet.

Brand alternatives

Other Cetirizine brands available in Pakistan.

All brands →

Other antihistamines (allergy medicine)

Sibling medicines in the Antihistamines (Allergy Medicine) class.

All in class →

Used for the same conditions

Other medicines commonly used for cold and flu and overlapping conditions.

Cold and Flu hub →

Sources

DRAP Registered Products Database — Drug Regulatory Authority of Pakistan
WHO Model List of Essential Medicines, 23rd ed. (2023) — World Health Organization
British National Formulary (BNF) — BMJ Group & Pharmaceutical Press

Medical disclaimer

This page is for educational use only and does not replace professional medical advice. Always confirm diagnosis, dose, and interactions with a qualified doctor or pharmacist before starting or changing any medicine.