Depending on how far off the deep-end you want to go, you can look into: peptides (BPC-157, TB-500), Human Growth Hormone and Platelet-Rich Plasma injections (P

Depending on how far off the deep-end you want to go, you can look into: peptides (BPC-157, TB-500), Human Growth Hormone and Platelet-Rich Plasma injections (PRP). There might be more stuff out there now, it's been a few years since I looked into it for a SLAP tear in my shoulder. If you are in the USA, look into "anti aging" or "longevity" clinics. It's basically gymbro MD's that will prescribe you that stuff for money. Then at least you can be fairly certain that you know what you're injecting. Otherwise, you're at the mercy of the dodgy websites/alibaba for acquiring the stuff. Obviously there is no definitive proof that the stuff works or if it's safe, otherwise it would be significantly more common. You can google, there are many small scale studies done on those compounds of varying degrees of quality. It all depends on your risk-tolerances etc. Ideally you'd be somewhere in the US near one of those clinics and could speak to a real doctor about your options, and not a random idiot from hackernews :D.