cycling c4 extreme

[drevil8814]

I have been taking c4 extreme for a few months and it isn't working as well as it once did. I am going to take a few months off from taking it. Is there some other good PWO supplement that I can take while not taking the c4? Something that doesn't cause a crash a few hours later? I was thinking of trying muscle pharm assault or Jack3d. Would either be good or is it too similar to the c4? Any recommendations would be appreciated.

[Ashop]

Alot of these contain the same active ingredient.

[ajordana]

i noticed a tolerance to c4 faster than any pre work out ive ever used.. like 2 workouts and it did nothing after. try white flood, my favorite hands down and ive uised it for a month at a time with no tolerance build up