Is it okay to mix Muscle Synergy powder with Uplift prior to working out?

Kimo,
Definitely OK to combine the two pre workout. You may have an increased tingling or heat feeling because both Niacin and Beta Alanine can have this effect. Personally, I find that if I drink the combo and begin to train before it really "kicks in", I don't notice it as much.
CR

Cool thanks CR!
I now mix 1 scoop Creatine Select, 3 scoops Muscle Synergy and 2 scoops Uplift for pre-workout and cheeehooo what a rush! All this prior to 5 am workout will wake up the dead!

Take care