Zafnol Tablet Side Effects in Pakistan

Zafnol 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: 2026-05-05

Side Effects

Quick Answer

Common side effects of Zafnol Tablet include fatigue and tiredness and dizziness or lightheadedness. Serious effects such as breathing issue require immediate medical attention. Most patients tolerate Zafnol Tablet well at the correct dose. Contact your doctor if any side effect persists or worsens.

Side Effects at a Glance

Common

Fatigue and tiredness
Dizziness or lightheadedness
Cold hands and feet

Serious — See a Doctor

Breathing issue
Fainting
Severe swelling

When to See a Doctor Immediately

Severe stomach pain
Chest pain
Fainting

Zafnol Tablet Side Effects (Nuksanat)

Zafnol Tablet (Atenolol) 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)

Fatigue and tiredness
Dizziness or lightheadedness
Cold hands and feet

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

Serious Side Effects (Sanjeedah Nuksanat)

Breathing issue — see a doctor immediately
Fainting — see a doctor immediately
Severe swelling — see a doctor immediately

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

Severe stomach pain
Chest pain
Fainting

Warnings and Precautions (Ihtiyat)

Don't use Zafnol Tablet if you are allergic to Atenolol or other beta-blockers
Avoid in severe bradycardia cases

Side Effects Summary Table

Type	Side Effect	Action
Common	Fatigue and tiredness	Monitor / inform doctor
Common	Dizziness or lightheadedness	Monitor / inform doctor
Common	Cold hands and feet	Monitor / inform doctor
Serious	Breathing issue	See a doctor immediately
Serious	Fainting	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 Zafnol Tablet?

The most commonly reported side effects of Zafnol Tablet include fatigue and tiredness and dizziness or lightheadedness. These are usually mild and go away on their own. Inform your doctor if they persist.

Can Zafnol Tablet cause allergic reactions?

Yes, like all medicines, Zafnol 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 Zafnol 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 breathing issue if continued use is needed.

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

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

Does Zafnol Tablet affect the liver or kidneys?

Zafnol 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 Zafnol Tablet.

Brand alternatives

Other Atenolol brands available in Pakistan.

All brands →

Other beta-blockers

Sibling medicines in the Beta-Blockers class.

All in class →

Used for the same conditions

Other medicines commonly used for headache and overlapping conditions.

Headache 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.