Nolva is incapable of blocking the estrogenic hormones that are created from dropping M1T, as research suggests. Supposedly, it comes through a different pathway, and nolva is incapable of blocking it.
HCG is probably a good idea to get your little buddies back in action, but clomide is probably your best bet.
Additionally, if you are doing M1T only, I used tribulus, zinc, chrysin, and a host of anti-oxidants for my post cycle therapy (pct). If you are doing some hardcore M1T dosages, then doing a regular post cycle therapy (pct) probably isn't a bad idea.
Post Cycle isn't really as it suggests, in the sense that it doesn't really get your system back running after a cycle. Rather, I'd suggest using "on-cycle", because of it's natural indigenous test boosting effects. But, they are both good supplements, you just need to look at the ingredients, and evaluate what you want to use it for. Post-cycle contains a lot of anti-oxidants, for those who have probably put their system through a thrashing with some supps.