A machine for filling and closing pharmaceutical containers disposed in respective supports has a sterile first work environment with an inlet passage and an outlet passage, a conveyor transporting the supports, which crosses the work environment through the inlet passage and the outlet passage, and a collecting station in the work environment, for collecting and extracting the containers from the supports. The work environment has a second outlet passage. A sterile second work environment has an inlet and an outlet, the inlet being at the second outlet passage of the first work environment to define a common passage. Another conveyor passes through the common passage, has a first part in the first work environment and a second part in the second work environment, and is predisposed so that the first part can receive the containers and convey them through the common passage at a filling station and a closing station.