Valium, Xanax & C(K)lonpin are all benzodiazapines and have similar effects and half-life.
While there are differences (i.e. Xanax best for the on-set of a panic attack), as long as you have a legit product in the class it should work well... However, be careful, because they are fucking addictive and the day you run out you will be pissing-up-a-rope...