RE: PCT question...
It would take longer, potentially more muscular losses, possible hormonal balance problems ie. gyno.
A pro-hormone is a substance that poses no real positive effect in its actual state - it requires the bodys metabolic activity to change it to something useful
A pro-steroid is a substance that exerts a positive effect in its own right. The term "pro-steroid" is typically used for such products which are legal to buy otc (or were until recently).