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Cephulac
http://www.rxlist.com/cgi/generic2/lactulose.htm
Full prescribing information from RxList.
Kristalose
http://www.kristalose.com
Includes manufacturer's prescribing details, package insert, and contact information.
Lactulose - Familydoctor.org
http://familydoctor.org/cgi-bin/multum.pl?op=GetLeaflet&id=12617&name=lactulose
Information for patients in English and Spanish.