They arent going to do anything unless you actually need them. But if you do need them they work great. I took them for 3-4 years Im now 5'11" instead of being 5'2". And your lucky when I first started I needed a shot a week and the needles were really gnarly but by the end they had come out with the better daily shots and were making more progress so your lucky.
The downsides when I took them were joint problems(also the reason I stoped). And they regularly take blood to make sure you are having any bad side effects.
If you need them do them but alas most people will never understand the need use HGH and think its to gain some sort of edge and not for what they really are as something that makes up for what your body is laking