Moveit

Moveit is a potion, possibly commonly available, to enhance stamina and energy on a temporary or emergency basis. The Violetta suggests there are at least six formulations, although whether this is merely marketing or indicative of different strengths, one cannot tell. Tarvek's reaction to the dose suggests it has strong stimulants in it, rather than being the equivalent of our-world 'energy drinks'.

Half a bottle of #6 apparently has an effective timeframe of at least two or three hours, even with adrenalin-pumping physical activity and stress.