Tonic water

Tonic water was an ingredient in Gin and tonic, but it could be drunk separately. (AUDIO: The Panda Invasion)

Barbara Wright drank tonic water at the Red Lion. (AUDIO: An Unearthly Woman)

Pete Tyler brought home tonic water. (TV: Father's Day)

Panda sacrificed himself to save the multiverse from being invaded by his alternative selves by jumping into a rift in the Time Vortex while holding a bottle of Tonic water. (AUDIO: The Panda Invasion)