Pharma-grade HGH — just trying to understand the topic

I’ve been slowly reading about HGH over the last few weeks, mostly out of curiosity. Nothing big pushed me into it — just noticing that recovery after workouts and stressful days isn’t as easy as it used to be. When you start digging, “pharmaceutical grade” comes up all the time, but people rarely explain what they actually mean by that.
I’m not looking to buy anything or make decisions, just trying to understand the topic without drowning in extreme opinions. How did you personally start making sense of all this info?