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Duphalac (lactulose) Disease Interactions

There are 2 disease interactions with Duphalac (lactulose):


Lactulose (Includes Duphalac) ↔ galactosemia

Severe Potential Hazard, High plausibility. Applies to: Galactosemia

Since lactulose solution contains galactose, use is contraindicated in patients who require a low galactose diet.


  1. "Product Information. Cephulac (lactulose)." Hoechst Marion-Roussel Inc, Kansas City, MO.
  2. "Product Information. Duphalac (lactulose)." Solvay Pharmaceuticals Inc, Marietta, GA.
  3. "Product Information. Chronulac (lactulose)." Hoechst Marion-Roussel Inc, Kansas City, MO.

Lactulose (Includes Duphalac) ↔ diabetes

Moderate Potential Hazard, High plausibility. Applies to: Diabetes Mellitus

Since lactulose solution contains galactose and lactose, it should be used cautiously in patients with diabetes.

Duphalac (lactulose) drug interactions

There are 356 drug interactions with Duphalac (lactulose)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.