As far as I am aware, none of the "lact" ingredients, including the
lactates, lactylates, and lactic acid, should bother anyone who is LI. 
They may or may not be a problem for those who are extremely sensitive or
allergic. None of them have to be dairy derived; they can all come from
other sources.

For a much fuller discussion of this issue, see my "Dairy or Nondairy? The
Experts Speak" page in the Dairy section of my web site, Steve Carper's
Lactose Intolerance Clearinghouse.

Steve Carper
http://ourworld.compuserve.com/homepages/stevecarper