Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

  1. Cholac
  2. Constilac
  3. Constulose
  4. Enulose
  5. Generlac
  6. Kristalose

Canadian Brand Name

  1. Acilac
  2. Alpha-Lac
  3. Cephulac
  4. Chronulac
  5. Lactulax
  6. Pms-Lactulose
  7. Rhodialax
  8. Rhodialose


Lactulose is used to treat constipation. It helps increase the number of bowel movements per day and the number of days on which bowel movements occur in patients with a history of chronic (long-lasting) constipation.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Syrup
  • Powder for Solution
  • Solution