The Nexus Per4m Variety Pack is a great way to not only find out whether the beloved high-stim Per4m formula works for you, but also try out its most popular flavours. Containing a wide variety of premium ingredients to support your energy and strength during workouts, Per4m is designed as an all-rounded high-stim pre workout to get you pumped and training for longer. It improves strength and energy, as well as mood and focus.