Duphalac (lactulose)

Duphalac is used to treat chronic constipation.

Lactulose is a type of sugar. It is broken down in the large intestine into mild acids that draw water into the colon, which helps soften the stools.

You should not use this medication if you are on a special diet low in galactose (milk sugar).

Before taking lactulose, tell your doctor if you have diabetes or if you need to have any type of intestinal test using a scope (such as a colonoscopy).

It may take up to 48 hours before you have a bowel movement after taking lactulose

. Stop using lactulose and call your doctor at once if you have severe or ongoing diarrhea.

The liquid form of lactulose may become slightly darken in color, but this is a harmless effect. However, do not use the medicine if it becomes very dark, or if it gets thicker or thinner in texture.

If you use lactulose over a long period of time, your doctor may want you to have occasional blood tests. Do not miss any scheduled appointments.

You should not use this medication if you are on a special diet low in galactose (milk sugar).
Before taking lactulose, tell your doctor if you have:

• diabetes; or
• if you need to have any type of intestinal test using a scope (such as a colonoscopy).

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using lactulose and call your doctor at once if you have severe or ongoing diarrhea.

Less serious side effects may include:

• bloating, gas;
• stomach pain;
• diarrhea; or
• nausea, vomiting.

Seek emergency medical attention if you think you have used too much of this medicine.
Overdose symptoms may include diarrhea, stomach pain, hot and dry skin, confusion, uneven heart rate, extreme thirst, increased urination, leg discomfort, and muscle weakness or limp feeling.