It's learned by accepting the More Potions quest from Bernard, then heading back home. Select Study in the menu and it should be there.
Oh I mean Restrain Potion (strong) recipe,form Subjugation of Libido,so I don't know where is it, maybe it's a bug?
You have to get to the lizard temple and choose Tasks when you are talking to Othra. She will give you the recipe alongside some her Earth Moss to make 7 restrain potions (strong) for the warriors
Okay that is Bug I restart and try this quest again then it work, maybe it because I'm using cheat, must to be more careful.
