Lactulose inactive ingredients?

There isn’t a single universal list of “inactive ingredients” for lactulose. The inactive ingredients vary by brand and formulation (oral solution, powder reconstituted, sugar-free versions, etc.). To know the exact excipients, you need the specific product label.

If you can tell me the brand name and country (for example, Duphalac, Chronulac, Enulose, Kristalose, etc.), I can look up the exact inactive ingredients from the label.

In the meantime, here are common types of inactive ingredients you might see with lactulose products:
- Water (as the solvent)
- Sweeteners (often sorbitol; sugar-free formulations may use sorbitol or other sweeteners)
- Flavoring agents (lemon, orange, banana, etc.)
- Preservatives (sodium benzoate, potassium sorbate)
- Acids for flavor/preservation (citric acid)
- Colorings (caramel color or others)

If you have an allergy or need to avoid a specific ingredient, check the product packaging or the patient information leaflet, or tell me the brand and I’ll pull the exact list for you.