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In some countries, this medicine may only be approved for veterinary use.

In the US, Lactulose (lactulose systemic) is a member of the drug class laxatives and is used to treat Constipation - Acute, Constipation - Chronic and Hepatic Encephalopathy.

US matches:

UK matches:



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Treatment of metabolic disease

Laxative, osmotically acting

Chemical Name

D-Fructose, 4-O-β-D-galactopyranosyl-

Foreign Names

  • Lactulosum (Latin)
  • Lactulose (German)
  • Lactulose (French)
  • Lactulosa (Spanish)

Generic Names

  • Lactulose (OS: JAN, DCF, USAN, BAN)
  • Lattulosio (OS: DCIT)
  • Lactulose (PH: BP 2015, JP XVI, Ph. Eur. 8)
  • Lactulose Solution (PH: BP 2015)
  • Lactulosum (PH: Ph. Eur. 8)

Brand Names

International Drug Name Search


BANBritish Approved Name
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Click for further information on drug naming conventions and International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.