Have you checked with the Doctor in the Tavern??? He sells a whole BUNCH of potions.
Also i'm up to level 22. Game is EPIC. Being a dragon ROCKS. Nowhere near finishing it anytime soon. 20 hrs in. Loving it.
My favourite things about the game:
-mini puzzles that aren't quests that result in skill points/stat points/items
-Mind reading
-Dragon form!!!!
-my creature!!!!
EDIT: also best leggings in the game were my paperthin leggings!!!! BUY THEM! DO IT!