<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: Elobixibat, A Bile Acid Transporter Inhibitor, Significantly Improves Rectal Sensory Thresholds In Elderly Patients With Chronic Constipation:A Randomized, Parallel-Group, Double-Blind, Placebo-Controlled Study[/INST] Yes</s>