I've been reading about steroids and from what I understand different esters have different half life/release. Still every side effect described is usually associated with testosterone.
As for aggression, from what I've seen there is no direct relation in most cases but it can affect some (just like not everyone gets acne or hair loss, etc)
I have a lack of faith in the pharmaceutical industry if this is their best attempt at male birth control. Those side effects aren't from testosterone, they're from massive hormone fluctuations, which with 1000mg of testosterone every 8 weeks your gonna get. There's no ester that will increase the half-life by that much, most people get prescribed testosterone cypionate, which is considered a long ester, and it's half-life is only 8 days.
The 1000mg every 8 weeks is pretty much for marketing and sales, because having to get an injection every 2 months is already a turn off for their consumer base let alone get an injection more frequent than that.
I've been reading about steroids and from what I understand different esters have different half life/release. Still every side effect described is usually associated with testosterone.
As for aggression, from what I've seen there is no direct relation in most cases but it can affect some (just like not everyone gets acne or hair loss, etc)