Drudanae, a Manual is a book found at Nicolas' house in High Hall. It describes the use and dangers of the Drudanae herb.

If you want to know how to effectively apply Drudanae, keep in mind the following rules:

You won't solve anything by applying Drudanae randomly; only use it during rituals when and where it is needed.

Do no apply Drudanae in combination with potions. Big no-no!

Other regions may have different regulations regarding the application of Drudanae. Still, it's always safer to assume it is banned because mostly it is.

Don't apply Drudanae if you have mental problems or if you are especially susceptible to psychological attack, for it will weaken your mental resistance.

Do not use Drudanae when operating big objects like zeppelins or bread knives.