Rakghoul serum

Rakghoul serum was medicine that cured the Rakghoul disease that once infected, would cause people to turn into Rakghouls. During his quest to get off of Taris, Revan found some serum on the corpse of a dead Sith trooper and turned it over to Zelka Forn, the Upper City doctor.

Appearances

 * Star Wars: Knights of the Old Republic