Buckley’s Cough Syrup: “Restroom” [00:80]# A disgusting taste would appear to correlate with the efficacy of a drug – that, at least, is what Novartis seems to be saying in its latest spots. Three persons taking part in a trial are having trouble telling the difference between samples of lavatory water and sweat and a dose of Buckleys new cough syrup. “It tastes awful. It works.”