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Lactulose Solution Side Effects Center
Pharmacy Editor: Melissa Conrad Stöppler, MD
Lactulose solution is a type of sugar that is broken down in the large intestine into mild acids that draw water into the colon, which helps soften the stools. Lactulose is used to treat chronic constipation. This drug is also used to treat or prevent complications of liver disease (hepatic encephalopathy). Side effects can include diarrhea, nausea, vomiting, bloating, and stomach pain.
Studies in animals have revealed no evidence of impaired fertility or harm to the fetus due to lactulose. There are, however, no adequate and well-controlled studies in pregnant women, so this drug should be used during pregnancy only if clearly needed. It is not known whether this drug is excreted in human milk.
Our Lactulose solution Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Lactulose Solution in Detail - Patient Information: Side Effects
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.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Lactulose Solution (Lactulose Solution) »
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Lactulose Solution FDA Prescribing Information: Side Effects
Precise frequency data are not available.
Lactulose may produce gaseous distention with flatulence or belching and abdominal discomfort such as cramping in about 20% of patients. Excessive dosage can lead to diarrhea with potential complications such as loss of fluids, hypokalemia, and hypernatremia. Nausea and vomiting have been reported.
Read the entire FDA prescribing information for Lactulose Solution (Lactulose Solution) »
Additional Lactulose Solution Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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