Post hoc analyses of the data considering adherence of the investigational product showed a 34% (n=6) placebo adjusted reduction in cough rate (p=0.045). Visual analog score (VAS) was observed to fall by 40 relative to placebo (n=6) and similarly across baseline cough rates — falling 56 for baseline cough rate of 5 coughs/hour and falling 54 for baseline cough rate of 25 coughs/hour. About King Saud UniversityKing Saud University is a public university in Riyadh, Saudi Arabia. The College of Medicine at King Saud University, established in 1967 (1387 AH), was the first medical college in Saudi Arabia. Mucus Transpiration as the Basis for Chronic Cough and Cough Hypersensitivity.