Polyethylene Glycol (Movicol / Forlax) Sachet Dosage Guide in Pakistan

PEG / Macrogol sachet dose varies by condition. This guide covers adult dose, child dose, how to dissolve, and important instructions.

Compiled by the PakVita Editorial Team · AI-assisted drafting with editorial review · Sourced from DRAP, WHO, BNF · Last updated: 2026-06-17

Dosage Guide

Quick Answer

Standard adult dose of PEG (Movicol / Forlax) sachet for constipation is 1-3 sachets per day. Dissolve each sachet fully in 250 mL water before drinking. Adequate water intake throughout the day is essential. Higher doses for faecal impaction. For children: paediatric formulation or weight-based dose — ask the doctor.

Dose at a Glance

Adult Dose

1-3 sachets per day (constipation); up to 8 sachets/day (faecal impaction — doctor guidance)

Once or divided doses

Max: As per pack instructions — confirm with doctor or pharmacist for impaction

Child Dose (Under 12 years — paediatric guidance required)

Paediatric formulation or weight-based dose — ask doctor or pharmacist

As per doctor's advice

Missed Dose

This is a laxative — there is no strict missed dose protocol. If a dose is skipped, take the next dose normally. Do not take a double dose.

Overdose

Excessive doses can cause diarrhoea and electrolyte disturbances. If accidentally taken too much, increase fluids and contact a doctor if diarrhoea is severe or electrolyte symptoms (dizziness, muscle weakness) appear.

Polyethylene Glycol (Movicol / Forlax) Sachet Dosage (Kitni leni hai)

PEG / Macrogol sachet correct dose depends on the condition. This is an OTC medicine but guidance from the pharmacist is helpful.

Adult Dose — By Condition (Condition ke mutabiq)

Constipation (Qabz)

Severity	Dose	Frequency
Mild to moderate constipation	1-2 sachets per day	Once or divided doses
Moderate to severe constipation	2-3 sachets per day	Divided doses (1 morning, 1-2 rest)

Faecal Impaction (Severe)

Up to 8 sachets per day — over 3 consecutive days
Doctor or pharmacist guidance is required
Consider electrolyte monitoring

Bowel Preparation (Colonoscopy)

High-dose PEG 4L regimen — hospital/clinic setting, Rx guidance, specialist supervision

Child Dose (Bachon ke liye)

Age	Guidance
Under 2 years	Always consult a doctor
2-11 years	Paediatric PEG formulation — weight-based dose, from doctor
12+ years	Adult dose possible — confirm with pharmacist

How to Prepare and Take (Kaise banayein aur lein)

1. Open the sachet 2. Pour the contents into a glass of water (250 mL — full glass) 3. Stir well until completely dissolved 4. Drink the full glass 5. Continue drinking 8+ glasses of water throughout the day

IMPORTANT: Do not eat sachets dry — MUST dissolve in water before drinking.

Best Time to Take (Kab lena chahiye)

Flexible — morning or evening, or divided
Some people prefer mornings for a regular bowel routine
Maintain a consistent time for best results

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

Both are acceptable — PEG has no food interaction
If stomach discomfort occurs, taking with food is better

Hydration (Paani peena)

Adequate hydration with PEG is essential — drink 8-10 glasses of water throughout the day. PEG retains water in the gut — if overall fluid intake is low, effectiveness can decrease and discomfort increases.

Dose Summary Table

Condition	Adult Dose	Notes
Mild-moderate constipation	1-2 sachets/day	Each in 250 mL water
Moderate-severe constipation	2-3 sachets/day	Divided doses
Faecal impaction	Up to 8 sachets/day x 3 days	Doctor guidance
Children	Weight-based / paediatric formulation	Ask a doctor

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

Frequently Asked Questions

PEG sachet ki dose kitni hai?

For adult constipation, 1-3 sachets per day — dissolve each sachet in 250 mL water. Higher doses are possible for faecal impaction — confirm with a doctor or pharmacist.

PEG sachet kaise banate hain?

Pour the contents of one sachet into a glass of water (250 mL) and stir well to dissolve BEFORE drinking. Make sure the powder crystals are fully dissolved — then drink.

PEG kitne din tak lena chahiye?

Short-term (1-2 weeks) or longer term for chronic constipation — long-term use is safe. However, the underlying cause must be addressed — diet, exercise, hydration, medications. Seek guidance from a doctor.

Kya PEG khali pait lena chahiye?

PEG can be taken with or without food — no significant difference. If stomach upset occurs, taking with food is better.

Children ko PEG sachet de sakte hain?

Paediatric PEG formulations are available for children (weight-based dose). Confirm dosing with a doctor or pharmacist before giving adult sachets to children.

Brand alternatives, same-class options, and other medicines used for the same conditions as Polyethylene Glycol Sachet.

Other laxatives

Sibling medicines in the Laxatives class.

All in class →

Used for the same conditions

Other medicines commonly used for stomach pain (abdominal pain) and overlapping conditions.

Stomach Pain (Abdominal Pain) 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.