I'm running MTrn right now and I would say that you should start low with like 2mg and see how that works, I started low and I am noticing the effects at 2mgs, right now. And I think that 8mg is way too much unless you are like 250+ lbs. Don't just start high, start low and see what works for you and work your way up. What works for one person won't work the same for everyone else.