Lactulose Solution 500ml (No Prescription Required) Lactulose Solution 500ml is an oral solution used to relieve constipation and to help maintain regular bowel movements. It is a synthetic sugar that works as an osmotic laxative: it draws water into the bowel, softens the stool, and promotes natural, comfortable relief. Key Features Effective relief from occasional constipation Softens stools for easier, more comfortable bowel movements Suitable for adults and children (see dosage guidance below) No prescription required How It Works Lactulose passes unchanged into the colon where it is broken down by natural bacteria. This process increases water content and volume of the stool, stimulating bowel movements. Effect is usually seen within 24–48 hours. This information is intended as a general product description and does not replace medical advice. Always follow the instructions on your specific product packaging.