real igf-1 is too unstable, even if u ever came across some( which u wont ) even shaking the bottle would fuck it up, so all the posting and changing hands would totaly destroy whatever it was,.... the long chain is more durable and supposably easier for your body to use, but from my experience its bunk... gives u a little pump, apart from that nowt...
im sure your local gyms will have plenty of lads selling allsorts, dont be too quik to order on line