|Release date||26 November 2008 (Update)|
|Quest item?||While Guthix Sleeps|
|Alchemy||Cannot be alchemised|
|Destroy||You made this serum by mixing an enriched snapdragon into one of Betty's truth serums.|
|Store price||Not sold|
|Examine||Fluid sloshes innocently in this vial.|
Super truth serum is obtained by mixing the enriched snapdragon and the truth serum during While Guthix Sleeps. The truth serum is used on one of Lucien's captured spies to gain information; however, it was smashed and the player is required to make a new one.