There's a reason why test or androgens were never approved as male contraception
It doesn't work reliably
If it did who in the world would refuse gov't sponsored contraceptive injections that make you more energetic, stronger and hornier?
It didn't work for a reason
I can't speak to 125mg a week (500 a month) but I can tell you 100mg a week will shut some down and NOT others. So I would assume 125 would have similar results.
Also what if you get ahold of some goat weed or tribus in with your liver support (a lot of them have them) and it partially unshuts you down?
S23 is being developed as a male contraceptive. however it would be foolish to trust any compound, you risk getting trapped for 18 years paying child support to a chick you will probably hate. not good.