#$%^&*AU2018200205A120180201.pdf#####ABSTRACT There is provided a complex comprising rifaximin and a complexing agent, wherein the complexing agent is a polyvinyl pyrrolidone (PVP) or a cyclodextrin. There is also 5 provided a process for preparing the complex, a pharmaceutical composition including the complex and therapeutic uses of the complex. 9858225_1 (GHMatters) P87152.AU.2