The best way to cure a cold or cough is the natural way. A lot of products found over the shelf have a lot of sweetners and chemicals that aren't good for the body. That being said you should try to go to a natural food store or organic store where they sell leaves from a gum tree, otherwise known as the eucalyptus leaf..more powerful in its natural state.
Not a lot of people know this recipe because its old school. Find a pine tree and cut a few branches.. sort it out and wash it till your sure its clean. Get a large pot and fill it with water to boil- add the pine and eucalyptus leaves till the water turns green. You can add fresh ginger as well and drink it as a tea. The left over water can be used for its steam, it will open your airways right away including a stuffy nose. You can also place a towel over the pot and place your head in the steam breathing in and out. When i first tryed this i was amazed how fast my lugs and nose pathways cleared up.. it was automatic!