How long does it take cough medicine to work?

about a week or less but to make it last for i little bit take a cough drop or after a gargle with warm salt water, take a few drops of grinded basil leaf with some juice of ginger mixed in a spoon of honey.You will be relieved of a irritating cough for the night's take some powdered white pepper in a spoon of honey to calm down your throat. I ALSO SUGGEST THAT I WOULDN'T BE EATING MILK PRODUCTS LIKE ICE CREAM OR THE MUCUS WILL STAY LONGER IN YOUR THROAT