The best and effective medine if you have cough anywhere in the is to drink Kalamansi Juice with Honey. Kalamansi is one of a kind of lemon but the only difference is the color and the size of lemon.
If you don't have any kalamansi or lemon in your home you can drink only plain water and add a honey on it. one tablespoon is enough.
Drink this water with lemon substitute to the water everytime you drink and if your drink lemon or kalamansi with honey just drink three times a day and in a couple of days you will feel the difference.
that is the new way of medicine that i drink everytime i have cough, I don't buy anymore medicine just drink the herbal medicine for my remedy in my cough.