Researchers at the University of Michigan have discovered a new 3D printing technology which allows them to print precise doses of medication onto dosing devices such as dissolvable strips, similar to breath strips, or microneedle patches.It works by inert gas and evaporated medication travelling through a nozzle, which is pointed at a cooled surface. The medication then condenses on that surface and sticks to it in a thin crystalline film. The technique could also allow doctors and pharmacists to combine multiple medications into one easy-to-deliver dose.

Source: https://news.engin.umich.edu/2017/09/printed-meds-could-reinvent-pharmacies-drug-research/