Dolhdrenc is a wild wolfblood potion that Jana gave to Shannon in the Series 2 episode, Total Eclipse of the Moon, and it is intended to work as a fear inhibitor, a way to overcome one own limits. It is shown to have a strong effect on humans if too much or all is taken, giving them the ability to be able to smell, hear and sense everything around then, although it can cause your blood pressure to increase (like we see with Shannon). As it is only supposed to be for Wolfbloods, Maddy screams at Jana for giving it to her. It gives a similar effect to humans as a Wolfblood on the Lunar eclipse. In Ancient Grudge Shannon is still obsessed with it, as she thinks it enhaced her senses, and she keeps asking Jana for the recipe.