Tryptophan Signet

Acquisition
Skill quests
 * Forbidden Fruit (Grothmar Wardowns)

Related skills

 * (elite)
 * (elite)
 * (elite)
 * (elite)

Trivia

 * Tryptophan is an amino acid (commonly found in meat products) which is converted into serotonin, a neurotransmitter involved with drowsiness/sleep.