I've combined the gh with all kinds of juice and found it works well in synergy with everything. Last year for mass it was along with enth, deca and eq, and like AAP my strength was retarded, to the point where I am nursing a bunch of injuries that came as a result. For mass it seemed like any growth started at 5iu a day, I went with 8iu on training days(5 days a week) for around 12 weeks and thats when it seemed like the majic happened