Question: what is the best cough medicine to loosen phlegm?
Answer: BENYLIN® EXTRA STRENGTH MUCUS & PHLEGM PLUS COUGH CONTROL Syrup works in your lungs to break up your tough mucus and phlegm, and clear it from your chest. This EXTRA STRENGTH fast-acting syrup is specially formulated to loosen and thin out mucus and phlegm so that you can expel it when you cough.