<s>[INST] Given an abstract text, please determine whether it contains any drug mentions. Provide a 'Yes' or 'No' answer based on the presence or absence of drugs. Abstract Text: How To Optimize Bowel Preparation For High-Risk Population:A Multicenter, Endoscopist-Blinded Randomized Controlled Trial Of Lactulose Combined With Polyethylene Glycol On Bowel Preparation Quality In Different Risk-Stratified Populations[/INST] Yes</s>