@xks201 There is an account here of someone with depression who got "improvements in concentration, energy, anhedonia and libido" from taking human growth hormone (HGH). I have tried the hormone IGF-1 (which is found in deer velvet antler supplements like this Nutronics Labs product), but have never tried HGH injections. IGF-1 is released in the body in when HGH is secreted, and so increased IGF-1 is one of the results of taking HGH. But I understand that HGH has a wider span of activity, compared to IGF-1 on its own. In my tests of taking IGF-1 from deer velvet antler for a week or so, I found that IGF-1 improved my sleep a lot, and improved libido, but made me very aggressive and irritable, so I had to stop taking IGF-1, because I became too short tempered. The dosage I used was around 700 to 1400 nanograms of IGF-1 per day, from a Nutronics Labs deer velvet antler product.