If you just want to use the bottle up and not use a SERM then run it two weeks 10, 20 with an otc pct. 2 wk cycles are supposed to allow you to rebound rapidly b/c supposedly only the signal from the pituitary to the testes is cut off where as goin much longer would cut off the hypothalamus signal to the pituitary as well. Seems to work in the real world too, speaking from personal and friends experience.