I guys, please could someonehelp me as how to use hgh as ive nver done it before. From what ive heard and researched is that 4 ius is enough each night for 6 months. Now, i dont know as to hom much 1 iu is, i got a pen from the pharm which is called gentropen and you can adjust a screw at the back in 0,1 increments onwards. Please help me on this as i dont want to just do it like the others and waste money as this is pharm grade and pretty expensive. I am 27, 6"1 and 106 kg, just trying to pick some more mass and drop some fat. Thx in advance gents