Length of Powerfull cycle

[Lawhammer]

Seems like the effectiveness of Powerfull begins to taper off after taking it for a while. Anyone know the recommended length of a Powerfull cycle and how long to take off in between cycles?

 

[Mulletsoldier]

I usually go on and off eight weeks at a time. Bridging with Symmetry is great during that period.

 

[xcendo]

Eh... I've found that the major strength increases begin to drop off after around 20 days. It's great to use in between longer cycles or for breaking plateaus. Just my experience.