Someone focused on energy, sleep, and GH support may be looking at Sermorelin
No GHK-Cu injectable is approved as a drug by the US FDA, the European Medicines Agency, or the Philippine FDA
Here's the TL;DR on vitamin timing: while there is no official medical advice dictating that you should take vitamin supplements at a specific time of day to improve their efficiency, there is quite a lot of research showing that avoiding some vitamin supplements at particular times (or more accurately, with particular meals) can improve absorption, or that taking some vitamins alongside food can reduce the risk of adverse side effects
This heals old, damaged skin tissues and replaces them with fresh cells
Peptides have taken over the internet and sports world these days and just like anything that goes mainstream you can get them through Amazon, Alibaba and other major retailers