patient 15754 in 08/2104 has been prescribed prednisone, milk of magnesia or labetalol?
select count(*)>0 from prescriptions where prescriptions.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 15754 ) and prescriptions.drug in ( 'prednisone', 'milk of magnesia', 'labetalol' ) and strftime('%y-%m',prescriptions.startdate) = '2104-08'