I assume it’s something like gh or igf, something expensive and/or hard to come by, that he was only recently able to use in significant quantities
IGF-1 does almost nothing. Everyone who used it will testify to this. Well someone will say it was amazing, it caused major swoleness and vascularity. But those are just tiny temporary cosmetic effects. And from what I've seen pretty much all use the cheap LR3 research chemical. I've seen quite a few pros say the extremely expensive Increlex was garbage, certainly not worth the money.
GH he's been on for many years like every pro bodybuilder. Come on, a 100iu kit is like 200 bucks now, money is no longer an issue here.
It makes no sense for Milos to concoct this story if completely false. Why would he need to do this? And tren is an almost unique steroid for quick cosmetic changes but I question how much it would do in a person already on everything else. Tren is more powerful that either IGF-1 and GH.
Milos isn't quite on the cutting edge of new growth drugs. It's almost certain new drugs are introduced to the market by some nerd, someone like Leo ( Leo supposedly introduced the "gold standard "of cholesterol management according to a video above) but I haven't seen any new avenues as far as that and they always leak to the internet.