OTC
Osmotic laxative
Lactulose
Last reviewed April 2026
Who is this for?
What is this drug?
Lactulose is a type of sugar solution that works as a laxative by drawing water into your bowel to soften your stool and make it easier to pass.
What is it used for?
Constipation (hard stooldifficulty going to toilet)hepatic encephalopathy (confusion caused by liver problems where the liver cannot clear toxins properly)
Available Over The Counter
Available at pharmacies without a prescription. Rules may vary by country.