Administers Lactulose In Empty Stomach. Clinical tolerance and energy value of sugar alcohols are related to their respective rates of digestion in the small intestine and the colon. Polyethylene glycol may not produce laxative results for 2 to 4 days.

When a larger dose is taken on an empty stomach, the results are quicker. The nurse administers lactulose to a client diagnosed with cirrhosis and hepatic encephalopathy. Lactulose is a laxative medicine made from a combination of two sugars.