Lactulose (By mouth)

There may be other brand names for this medicine.

This medicine is not right for everyone. Do not use it if you are following a diet low in lactose or galactose.

Your doctor will tell you how much medicine to use. Do not use more than directed.
Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.
To make this medicine taste better, you may mix it with water, milk, or fruit juice.
Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

Some medicines can affect how lactulose works. Tell your doctor if you are using antacids or antibiotics, such as neomycin.

Tell your doctor if you are pregnant or breastfeeding, or if you have diabetes.
Tell your doctor that you are taking lactulose before you have any medical tests or surgery on your colon or rectum.
When you first take lactulose, it may take 24 to 48 hours before you have a normal bowel movement.
Keep all medicine out of the reach of children. Never share your medicine with anyone.

Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Severe diarrhea

Last Updated: 1/27/2017