Torn-out page: Arachas decoction

Torn-out page: Arachas decoction is an alchemy formula in that is needed to craft arachas decoction.
It can be obtained by reading The Illustrated Atlas of Insectoids, found at random diagram locations, or purchased from the following merchants:
* Herbalist in Hierarch Square
* Yolar at Gedyneith
* Herbalist in Heddel 
* All herbalists in Toussaint except Pinastri 
== Notes ==
* This formula was supposed to be found along with Manuscript page: Beast oil in the Pellar's hut. The chest that has it, by the door, is still there but looting it is explicitly disabled in the game files.
ru:Вырванная страница: Отвар из главоглаза
Category:The Witcher 3 alchemy formulae