The present invention concerns a pharmaceutical combination comprising a) a first agent which is a non-immunosuppressive cyclophilin-binding cyclosporine, e.g., a compound of formula I and b) a co-agent. Co-agents include, but are not limited to, interferons, a conjugate of interferon, antiviral agents, helicase inhibitors, protease inhibitors, polymerase inhibitors and nucleoside analogs. The instant pharmaceutical combination may be used, e.g., in treating subjects having a flaviviridae infection, e.g., a Hepatitis C infection.