A box of Lactulose usually costs a few tens of dollars, and prices may vary from region to region, pharmacy to pharmacy, and hospital to hospital. Commercially available lactulose products, due to manufacturers, packaging specifications, the region in which they are located, hospital level, pharmacy pricing and other aspects of the reason, can lead to the same specifications of lactulose products appear different prices, but generally a bottle of lactulose selling price of about dozens of dollars, with a slight difference. Lactulose is primarily used to treat constipation and hepatic encephalopathy. Lactulose oral solution relieves constipation by stimulating peristalsis in the colon and regulating the physiological rhythm of the colon. The time for Lactulose to take effect varies from person to person. Some people are more sensitive and may experience mild abdominal pain and bowel movements 1 to 2 hours after taking Lactulose. Some people are not sensitive and only experience bloating and gas. For patients with chronic constipation, it is recommended to eat more fruits and vegetables and other ingredients that contain more vitamins and dietary fiber in daily life. Lactulose as a laxative, long-term use may cause bloating, nausea and vomiting, etc., so you need to follow the doctor’s advice and avoid self-medication.