Medical apparatus (10) for use with single use kits (100) containing a flow control device (101), a syringe (40), and one or more vials (60A, 608, 60C), for reconstituting a liquid drug dosage and administrating same. The flow control devices (101) include a core member (116) having an inlet port (107) and a flow control member (117) rotatably mounted ON the core member (116) and having at least one vial port (112,113,114) for attachment of a vial and an outlet port (109). Flow control devices (101) are designed to ensure an inlet port (107) is in flow communication with a single port (112,113,114) at each flow control position of at least two predetermined flow control positions of a flow control member (117) relative to a core member (116). The medical apparatus (10) includes a housing (11) having a syringe support (12) for horizontally supporting a syringe (40) and a flow control device support (13) for horizontally supporting a flow control device (101). The medical apparatus (10) can be designed for either MANUAL operation or automatic operation.
