You actually NEED to run some nolva with HCG, as HCG in higher doses tends to lead to the formation of lots of estrogen. Take lots of HCG without an estrogen-blocker and HCG can give you gyno. I've only used HCG once, but the way I would do it again would be to run HCG along with nolva the last 7-10 days of my cycle, then continue on with just nolva for another 2-3 weeks.