Lactulose for Hemorrhoid Management

Mechanism of Benefit and Dosage

Lactulose creates an osmotic gradient in the colon, drawing water into the stool and producing a softer consistency, which is beneficial for hemorrhoids, as stated by the American Gastroenterological Association 1, 2
The initial dosing strategy for lactulose is to start with 15-30 mL (10-20 g) of lactulose syrup once daily, with the goal of producing 2-3 soft, non-forced bowel movements per day, according to the American Gastroenterological Association 1, 2, 3
The dose can be adjusted every few days based on stool frequency and consistency, with a maximum dose of 40 g (60 mL) daily if needed, as recommended by the American Gastroenterological Association 1, 2

Bloating and flatulence are dose-dependent and occur in approximately 20% of patients, which may limit clinical use, as reported by the American Gastroenterological Association 1, 2, 3
Lactulose is safe in pregnancy, though it should be used cautiously in the first trimester, and diabetic patients require carbohydrate monitoring due to galactose and lactose content, as stated by the American College of Gastroenterology 3, 5

Lactulose is cost-effective at less than $50 per month and available over-the-counter, making it an accessible option for hemorrhoid-related constipation, according to the American Gastroenterological Association 3