From Pathfinder #149: Against the Scarlet Triad, which isn't enabled.

Mage Bane

ITEM 12

UNCOMMON ALCHEMICAL CONSUMABLE INJURY POISON

Price 325 gp

Usage held in 1 hand

Bulk L

Category poison

Upon being mixed and injected into the bloodstream, this powder of the crimson orchid quickly assaults the brain and nerves, disrupting the victim's ability to piece together coherent thoughts and spells.

Activate Interact (Injury)

Saving Throw DC 32 Fortitude

Maximum Duration 6 rounds

Stage 1 2d6 mental damage and Stupefied 2 (1 round)

Stage 2 3d6 mental damage and Stupefied 3 (1 round)

Stage 3 4d6 mental damage and Stupefied 4 (1 round)

Pathfinder #149: Against the Scarlet TriadOGL