All I can go off of currently is my sore nips and increased libido but thats legit test, ill know for sure in a few weeks when I either get blood tests or it starts to really kick in. Im not having any issues with it right now. I personally dont think its made with the utmost care though. What gauge needle did you draw with? What length needle did you pin with? How far in did you place said needle?
Edit - I did get reallllly bad test flu like symptoms the other night post injection for a good 12-16 hours but I beleive I got some in a vein.