10 weeks and I agree with the above. no reason to go more. want to run deca longer then come off .. recover.. then go back on again in the future.
I saw excellent gains on my 10 and 8 week cycles. recovery from last injection was 4 months which is pretty good since deca esthers linger for 5 weeks after last injection although I ran a very aggressive PCT.
16 weeks starting 200mg and ending @ 400mg , but that was in the past when i used to cycle, now i'm on hrt and i'm on it most of the year i do 100-200mg for 10 weeks then off for a while like 4-6 weeks then back again.