Ithecac

Ithecac is a Potion that allows you to see the hidden things of this world. First found in the main storyline Quest, Ithecac is used initially to find quest items for the quest reward. However, the potion can also be used to find hidden items throughout the game, including Potion recipes and Artificing recipes.

'Spoiler Warning: These are locations that are intended to be found through extended and arduous exploration while under the influence of Ithecac. If you would rather do that, then do not continue reading.'

Alchemy and Artificing
Artificing and Alchemy potions can be found through the use of Ithecac. The first location on the main story line that contains a hidden item is part of the Explorer's League quest in the Tradu mines. Other locations for hidden items include: Other sites exist.
 * Highsteppe graveyard
 * Town center of Old Kingsport
 * New Kingsport plateau before airship platform
 * Oasis in Obnobi Desert
 * Obnobi Desert near the south teleportation pillar

Dye Recipes
Most dyes are found from mob drops. However, a few dye recipes are found through the use of Ithecac. Locations for these dye recipes include:
 * Chef basement in Highsteppe
 * Fisherman's Crust village in Frosted Spit
 * New Kingsport house in the Rainforest
 * Burning Forest Center near Wenderwood