Also seems to do well for site growth
IGF-DES short life possible very short(still researching with endo's and PDF's) Also seems to do well for site growth even though bros subq systematic might be just as effective it's all research really.
however it's been stated 5x times stronger I love it! especially(PP!)
igf1-R3 Much longer half life, I seem to tighten up really well on this and my endurance is (was)really good I think it could do really well in PCT my opinion but it needs to be run for long periods of time to see muscle growth(again my opinion)
Hope it helps check out PP sales on both of these items