If your going to benifit from orals only - the dose need be spread evenly over 24hrs.
Every 6, or even 4hrs.
100mg of real primo will give a nice anticatabolic effect. They esp good at night for me, they dont mess w/ my sleep. A bucket full of Schering would be nice

If your lean or dieting to lean, the stuff helps hold on to muscle dearly.
It's Nothing like the swell of 600mg of Test and some Deca, but it tips the ballance in yur favor.
I'd personaly consider 25mg every 4hrs.
6 am & 6pm... 10 am & 10 pm. Inconvienent, but about the best that can be done w/ orals only.
Stacking Some Stanoz inj or Tprop would real ramp it up in effect. 1+1=3