Quick summary

Type of medicine

Generic

Active Ingredient

Effective within

Works by

Lactulose helps ease constipation by pulling water into the bowel, which softens stools and makes them easier to pass.

Side effects

Medication details

Description

Lactulose Solution is a gentle, naturally acting laxative designed to ease constipation. It works by drawing water into the bowel, which softens stools and supports their natural passage. As a colonic acidifier, it helps restore regular bowel movements in a safe and effective way.

This solution is widely suitable, including for pregnant women, breastfeeding mothers, children experiencing constipation, individuals recovering from surgery, and older adults or those dealing with chronic or severe constipation.

Directions

Adults: 15 ml daily (three 5 ml spoonfuls).

Children 5–10 years: 10 ml daily (two 5 ml spoonfuls).

Children 1–5 years: 5 ml daily (one 5 ml spoonful).

Infants under 1 year: 2.5 ml twice daily.

Ingredients

Lactulose: 3.35 g

Also contains small amounts of lactose and galactose

Side Effects

Diarrhoea, bloating and wind.

Warnings

Use only as instructed. Taking more than directed may be harmful.

If constipation continues or symptoms do not improve, seek medical advice.

Long-term or frequent use of laxatives is not recommended.

Medically reviewed and published

  • This page was medically reviewed by Dr Sohaib Imtiaz, Clinical Lead on

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FAQs

Please read our FAQs page to find out more.

How long does lactulose take to work?

It usually takes two to three days before the full effect is felt. This is normal and does not mean it is not working. Do not increase the dose in that time; give it a chance to take effect.

Should I hold it in my mouth or swallow it straight away?

Swallow each dose promptly. Lactulose contains sugars, and keeping it in the mouth for an extended time can contribute to tooth decay, particularly with long-term use.

Is lactulose safe if I have diabetes?

It contains small amounts of lactose and galactose. At normal doses this is usually manageable, but if you are being treated for hepatic encephalopathy the dose is higher and the sugar content becomes more significant. Discuss with our pharmacy team at info@rightangled.com if you are unsure.

Is there anyone who should not take lactulose?

It must not be taken by people with a rare condition called galactosaemia, or by anyone with a blockage in the gut other than normal constipation. If you are unsure whether it is suitable, check with our pharmacy team at info@rightangled.com.

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