So I'm wondering how to use HCG...is it powder? What do you do with it? Do you IM it like normal? Please help I want to add it to my PCT I heard it helps and what's the difference between 5000iu and 10000iu which would I need...also just a side question how do you use HGH and the pens I don't understand them the vial you load into the pen is that just 1 dose or many because it's expensive?