The recommendation on the Power Drive label is not to exceed two servings in one day.
Poliquin says that taking too much can have a negative effect.
So what is the minimum time that should be between two servings?
I don’t think it matters since I often double up and take one giant 2-scoop hit of Power Drive.
There is no set time limit. I would guesstimate about 6-8hrs inbetween servings.
Your body will build up a tolerance to the tyrosine in PD, so you don’t want to take it all the time.
IMO, you should only take it pre-workout, and no more than 4-5 days a week.
Actually, the T-mag crew has stated that Power Drive works better when it’s used daily. I’ve experienced this myself as well.