From Pathfinder Gamemastery Guide, which isn't enabled.

Flayleaf

ITEM 0

ALCHEMICAL CONSUMABLE DRUG INGESTED INHALED POISON

Price 1 gp

Usage held in 1 hand

Bulk L

Category drug

The flayleaf plant is relatively common, though the mildly euphoric effects of smoking its dried leaves increase when it's sourced from plants specifically grown to produce such effects.

Activate Interact (Ingested, Inhaled)

Saving Throw DC 12 Fortitude

Onset 10 minutes

Maximum Duration 4 hours

Stage 1 +1 item bonus to saving throws against mental effects (1 hour)

Stage 2 Fatigued and +1 item bonus to saving throws against mental effects (1 hour)

Stage 3 fatigued and Stupefied 1 (1 hour)

Stage 4 fatigued, Frightened 2, Stupefied 2 (1 hour)

Pathfinder Gamemastery GuideOGL