everyone reactes differently,but in general I think 3-400mg of primo by itself will not shut you down enough that you would any hcg,you might get away with just some tribulus at the end of your cycle,but it wouldn't be a big deal to chuck down clomid and tamox. for a couple few weeks.Your sides while on should be nothing. Like I said before,primo and hgh will give you some nice lean gains.Let us know.