The common pharmaceutical market of the Eurasian Economic Union will go online on May 6. The rules of registration, carrying out medical studies, requirements for instructions and labeling will become unified on the territory of the EAEU. The transition period will be smooth, which will prevent disruptions in the health systems of the member countries and help medicines manufacturers to adapt to new requirements as comfortably as possible. In particular, until December 31, 2020 the manufacturers will be able to choose among national or common rules while registering medicines.