Those looking for an alternative to Spice might want to give this one a try as most users have reported it a more natural feeling experience.
Nitro is a mild blend that came before the Spice Alternatives and Fusion. It contains Valerian, and a considerable portion of the effects of this blend, or lack there of, are described there. It is notable as the first smoking blend to contain Valerian, which is usually only used in tea form. It is mildly relaxing, and may be better compared in strength to tobacco or caffeine than cannabis.