Chronex

Chronex was a mind-expanding drug developed by the Hysk to control their slaves. It dulled awareness of time's passage, giving the illusion of eternal youth. In high doses, it caused hallucinations, frenzied madness and death. It was illegal on most civilised worlds.

On Archimedes, UniMedia reporter Huksley discovered a connection between the Fountain Corporation's Fountain Programme and a number of strange deaths on the colony. The Seventh Doctor recognised the drug's formula as Chronex and had her take him to the Corporation's headquarters, where he helped her uncover the truth: her story was a hoax manufactured by UniMedia to increase their ratings. (PROSE: The Infinity Season)