Codeine
From Tardis Wiki, the free Doctor Who reference
Codeine was among the remedies Jackie Tyler suggested to treat the newly regenerated Tenth Doctor's neuron implosion on Christmas Eve 2006. (TV: The Christmas Invasion [+]Loading...["The Christmas Invasion (TV story)"])
It was popular as a painkiller in 1970s England. The Eighth Doctor believed ibuprofen was better, though it wasn't yet well-known in 1974. (AUDIO: Horror of Glam Rock [+]Loading...["Horror of Glam Rock (audio story)"])
