"Zürkh" Tincture

"Zürkh" Tincture is a type of drug in Pathologic 2 made by brewing Black Twyre and Brown Twyre.

When used on oneself, it restores 40 points of immunity but increases thirst by 20 points.

It can be used to diagnose and treat others, and in barter with sick Townsfolk and Herb Brides, as well as Worms.