ive never ran less or more than 10 a day... some guys will run 7-10 during pct but i would keep it at 10 a day on cycle... if you ran 10 a day, one bottle would last 60 days... its an excellent deal... i feel to get the best result that you should run it everyday as opposed to aromasin or arimidex where you would run it eod... mr supps always has forma in stock...