The Ferassin root serum is a drug created by Zaddik from Ferassin root found on his Zaddik's homeworld. He began experimenting and developed a serum as an alternative food source for the young Wraith Ellia, which he believed worked. According to Zaddik (and until after Ellia tells him otherwise), he believed that Ellia never fed on a human other than him. (SGA: "Instinct")

Community content is available under CC-BY-SA unless otherwise noted.