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Duphalac Syrup Dosage Guide in Pakistan

The Duphalac dose depends on age and on what it is being used for. This guide covers the constipation doses for adults and children, the liver disease dose, and what to do about a missed dose.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: · Review date on file:

A named review is not recorded for this page. Confirm medicine advice with your doctor or pharmacist.

Dosage Guide

Quick Answer

For constipation, adults usually start Duphalac Syrup at 15 to 45 ml a day, then continue on 15 to 30 ml a day, once daily or in two doses. Children 7 to 14 take 10 to 15 ml a day and ages 1 to 6 take 5 to 10 ml. It can take 2 to 3 days to work.

Dose at a Glance

Adult Dose

Constipation: 15 to 45 ml a day to start, then 15 to 30 ml a day

Once daily, or split into two doses

Max: No fixed maximum; reduce the dose if diarrhoea occurs

Child Dose (Under 1 year only on a doctor's advice)

7 to 14 years: 15 ml a day to start, then 10 to 15 ml; 1 to 6 years: 5 to 10 ml a day; under 1 year: up to 5 ml a day

Once daily, or split into two doses

Missed Dose

If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose. Never take a double dose.

Overdose

Too much lactulose can cause diarrhoea, stomach pain and loss of body salts (electrolytes). Stop or reduce the dose and drink fluids. Get medical help for severe or persistent diarrhoea, dizziness or signs of dehydration.

Duphalac Syrup Dosage (Kitni leni hai)

Correct dosage of Duphalac Syrup is important for safe and effective treatment. The doses below come from the Duphalac product information (10 g lactulose in 15 ml). Follow your doctor's or pharmacist's advice.

Adult Dose (Baalgon ke liye)

  • Constipation, adults and adolescents: 15 to 45 ml a day to start, then 15 to 30 ml a day
  • Take it once a day or split it into two doses
  • Hepatic encephalopathy, adults only: 30 to 45 ml three to four times a day, as your doctor advises
  • If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose. Never take a double dose.

Starting Dose: 15 to 45 ml a day for constipation

Usual Dose: 15 to 30 ml a day for constipation

Max Daily Dose: No fixed maximum is set. Reduce the dose if diarrhoea or stomach pain occurs

Child Dose (Bachon ke liye)

  • Children 7 to 14 years: 15 ml a day to start, then 10 to 15 ml a day
  • Children 1 to 6 years: 5 to 10 ml a day
  • Infants under 1 year: up to 5 ml a day, only on a doctor's advice

Laxatives should only be given to children occasionally and under medical supervision. Use the measuring cup provided rather than a household spoon.

How to Take (Kaise leni hai)

  • Measure the dose with the cup provided
  • Swallow it in one go, undiluted or mixed with water or fruit juice
  • Drink plenty of fluids, about 6 to 8 glasses a day
  • It can take 2 to 3 days of regular use before it starts to work

Best Time to Take (Kab leni chahiye)

  • A once-daily dose at the same time each day, for example with breakfast
  • Same times daily to maintain a routine

With Food or Empty Stomach (Khali pait ya khane ke baad)

  • It can be taken either way, on an empty stomach or with food.

Missed Dose (Dose chhoot jaye to kya karein)

If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose. Never take a double dose.

Overdose (Zyada Dose)

Too much Duphalac Syrup can cause diarrhoea, stomach pain and loss of body salts. Stop or reduce the dose and drink fluids. Seek medical help for severe or persistent diarrhoea or signs of dehydration.

Dose Summary Table

PatientDoseNotes
Adult (constipation)15 to 45 ml a day to start, then 15 to 30 ml a dayOnce daily or in two doses
Adult (hepatic encephalopathy)30 to 45 ml three to four times a dayOnly under a doctor's care
Child 7 to 14 years15 ml a day to start, then 10 to 15 ml a dayUnder medical supervision
Child 1 to 6 years5 to 10 ml a dayUnder medical supervision
Infant under 1 yearUp to 5 ml a dayOnly on a doctor's advice

The information in this guide is for educational purposes only. Always confirm the dose with your doctor or pharmacist.

Frequently Asked Questions

What is the standard adult dose of Duphalac Syrup?

For constipation, adults and teenagers usually start with 15 to 45 ml a day and then continue on 15 to 30 ml a day, adjusted to their response. It can be taken once daily or split into two doses.

What should I do if I miss a dose of Duphalac Syrup?

If you miss a dose, take it as soon as you remember. If the next dose is close, skip the missed dose and continue on schedule. Never double the dose.

Can I take Duphalac Syrup on an empty stomach?

Yes. It can be taken with or without food, undiluted or mixed with water or fruit juice. A once-daily dose is best taken at the same time each day, for example with breakfast.

What happens if I take too much Duphalac Syrup?

Too much can cause diarrhoea, stomach pain and loss of body salts. Stop or reduce the dose and drink fluids. Get medical help if the diarrhoea is severe or does not settle, or if there are signs of dehydration.

How long should I take Duphalac Syrup?

Give it 2 to 3 days to start working. For constipation, use it for as long as needed and see a doctor if it does not improve. Long-term use should be under medical supervision.

Explore entries related to Duphalac Syrup by ingredient, class and listed uses. These links are not recommendations to switch treatment.

Sources

  1. Duphalac 3.335 g/5 ml Oral Solution - Summary of Product Characteristics (SmPC) — electronic medicines compendium (emc)
  2. DRAP Registered Product Data (Public Registry) — Drug Regulatory Authority of Pakistan
  3. 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.