As biologics or personalized medicines become more and more available, developing any sort of national pharmacare plan and looking at developing a formulary is difficult, in the sense that as time advances, medicines become so personalized that you may have Jane Doe needing a certain medicine for breast cancer that you can't just list on a formulary because it's for Jane Doe. The system has to be flexible enough to incorporate that, or else the formulary, for all intents and purposes, is not very useful.
