Using either a spoon or a small scoop, drip drops of the cough drop mixture into the molds (or the cookie sheet). If doing the latter, they may flatten or they may stay in a ball, depending on how hot you got the mix to when you boiled it. Make sure the pieces you make can fit into your mouth easily. I made mine much too big the first time and ended up with a bunch of pieces that looked like broken glass. Not bad, but not the drops that I was looking for.
It does call for sugar which is the basis for hard homemade cough drops. You can substitute about 25% of an alternative sweetener, but you'll need the sugar to form the drop. I use raw sugar or make my own, to make it healthier than refined sugar.