Duphalac Syrup Side Effects in Pakistan

Duphalac Syrup 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: 2026-04-17

Side Effects

Quick Answer

Common side effects of Duphalac Syrup include mild abdominal cramping and flatulence. Serious effects such as severe allergic reactions require immediate medical attention. Most patients tolerate Duphalac Syrup well at the correct dose. Contact your doctor if any side effect persists or worsens.

Side Effects at a Glance

Common

Mild abdominal cramping
Flatulence
Nausea

Serious — See a Doctor

Severe allergic reactions
Persistent diarrhea leading to dehydration
Breathing issue

When to See a Doctor Immediately

Severe stomach pain
Persistent diarrhea leading to dehydration
Fainting

Duphalac Syrup Side Effects (Nuksanat)

Duphalac Syrup (Lactulose) 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)

Mild abdominal cramping
Flatulence
Nausea

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

Serious Side Effects (Sanjeedah Nuksanat)

Severe allergic reactions — see a doctor immediately
Persistent diarrhea leading to dehydration — see a doctor immediately
Breathing issue — see a doctor immediately

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

Severe stomach pain
Persistent diarrhea leading to dehydration
Fainting

Warnings and Precautions (Ihtiyat)

Do not use Duphalac Syrup if you are allergic to Lactulose or any component of the medicine
Individuals with galactosemia should not use this syrup
Patients with intestinal blockages

Side Effects Summary Table

Type	Side Effect	Action
Common	Mild abdominal cramping	Monitor / inform doctor
Common	Flatulence	Monitor / inform doctor
Common	Nausea	Monitor / inform doctor
Serious	Severe allergic reactions	See a doctor immediately
Serious	Persistent diarrhea leading to dehydration	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 Duphalac Syrup?

The most commonly reported side effects of Duphalac Syrup include mild abdominal cramping and flatulence. These are usually mild and go away on their own. Inform your doctor if they persist.

Can Duphalac Syrup cause allergic reactions?

Yes, like all medicines, Duphalac Syrup 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 Duphalac Syrup 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 allergic reactions if continued use is needed.

What should I do if I experience side effects from Duphalac Syrup?

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

Does Duphalac Syrup affect the liver or kidneys?

Duphalac Syrup 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 Duphalac Syrup.

Brand alternatives

Other Lactulose brands available in Pakistan.

All brands →

Lilac Syrup
Lactulose
Getz PharmaRs. 220.24–263.94

Other laxatives

Sibling medicines in the Laxatives class.

All in class →

Used for the same conditions

Other medicines commonly used for constipation and overlapping conditions.

Constipation 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.