Lactulose 3.3g/5ml Oral Solution - 300ml/500ml

Lactulose 3.3g/5ml oral solution is an osmotic laxative used to treat constipation, working gently by drawing water into the bowel to soften the stool and make it easier to pass, available in 300ml and 500ml bottles, sold by Ways Pharmacy (UK).

Key facts

Who it is for

• Adults and children with constipation, including hard or infrequent stools
• People who prefer a gentle laxative that softens the stool rather than stimulating the bowel
• People who can take a few days for the laxative to take full effect

Not suitable for: anyone allergic to the ingredients; people with galactosaemia; anyone with a bowel blockage, suspected perforation, or undiagnosed abdominal pain. Speak to your pharmacist before use if you have lactose intolerance, are pregnant or breastfeeding, or take other medicines.

How to use

1. Read the patient information leaflet on the pack before you start.
2. Adults and adolescents over 14: starting dose 15–45ml a day; maintenance 15–30ml a day.
3. Children 7–14: starting dose 15ml a day. Children 1–6: 5–10ml a day. Use only as the label or your pharmacist advises.
4. The daily dose can be taken once, ideally at breakfast, and adjusted to achieve soft, comfortable stools.
5. Drink plenty of fluids. Do not use for more than 2 weeks without medical advice. If there is no improvement, speak to your doctor.

Frequently asked questions

How does lactulose work?

Lactulose is an osmotic laxative. It draws water into the bowel, which softens the stool and makes it easier and more comfortable to pass.

How long does lactulose take to work?

Lactulose works gradually. It may take up to 2 to 3 days to have its full effect, so it is not for instant relief of constipation.

How long can I take lactulose?

Use it for the shortest time needed. Do not take it for longer than 2 weeks without speaking to your doctor, who can check why constipation is continuing.

Can I take lactulose in pregnancy?

Lactulose is sometimes used during pregnancy, but you should speak to your pharmacist or doctor before use so they can confirm it is suitable for you.

Can children take lactulose?

It can be used in children with the dose adjusted by age. For babies and very young children, use it only on a doctor's advice.

Safety and storage

• Always read the patient information leaflet before use, as manufacturers update it regularly.
• Stop and see your doctor if you have ongoing abdominal pain, no improvement, or symptoms such as nausea or bloating after use.
• Long-term use of too high a dose can cause diarrhoea and disturb the body's salt balance.
• Store below 25°C; do not refrigerate or freeze. Keep out of the sight and reach of children.
• Do not use after the expiry date shown on the bottle.

References

• NHS — Constipation
• Lactulose Oral Solution Patient Information Leaflet via emc

This page provides factual information about an over-the-counter osmotic laxative. Always read the patient information leaflet before use. Do not use for more than 2 weeks without medical advice. Suspected side effects can be reported via the MHRA Yellow Card Scheme.