Is one required, or has anyone experienced any side effects that could be eliminated by one?

nah, you should be good. if you want try some retain2 to kill cortisol after you stop the blue up.
Sweet, I have read alot of the logs and have seen some awesome stuff written about it. I am going to give it a try. I tried out the Green Mag + PW today, had massive pumps but I hated the taste of the PW... so back to Xtend I am afraid... Sorry CL.
Ya I used the sample package you guys sent me, put it in my shaker and added exactly what the package stated.... i like to follow the directions the first time through =) So how about a sponsored BU log?.......
With purple wraath i put 24 oz of water in it, let it sit for about 30 minutes. Then put ice in it during working out. Tasted good, everyone who tried it liked it