LACTULOSE

• Action to be taken: No action needed
• Rationale:Less than 3% of laculose is absorbed . Absorbed lactulose is excreted unchanged in the urine. Unabsorbed lactulose is metabolized by colonic bacteria to lactic, acetic, and formic acids.
  

POLYETHYLENE GLYCOL

• Action to be taken: No action needed
• Rationale: Results from pharmacokinetic studies show that polyethylene glycol is poorly absorbed and primarily eliminated in the feces

References:

1. Lactulose package insert. Fa Davis Company. 2015
   
2. GoLytely (polyethylene glycol) package insert. Braintree Laboratories, Inc. Braintree, MA  2013