you should run it 12 weeks, not 8 bro but thats your call... it peaks at week 8 so you are cutting it short... you will still get results at 8 weeks but your leaving gains on the table... 1 bottle of 2866 lasts 8 weeks...I think I'm gonna go with the osteron with my test and see how that works the other two seem to have some sides I didn't like reading. So looking at 8 weeks at 25 Milg. Will that be 1 or 2 bottles ?will order asap.