As just a PCT no you would need atleast add clomid.
Proviron is that one nice oral you can just use..by itself, you still need a PCT after aka add Clomid. Or do a Proviron clomid cycle, but dont crash your estro.so whatch it.
Alot of builders and pros use it as a gap between cycles. It does block some estro but the affects on the sex hormone binding globulin (SHBG), proviron allows the body to have more freeing test so yes on or off cycle this is a + and I recomand in any cycle. If your using Proviron in a cycle and an estro blocker be careful not to crash your estro Provion does block estogen.
Proviron really isnt a steriod it's right there but it doesnt quite reach the anabolic state on the androgen receptors it's close but it's not like dbol,tbol etc. The key to Proviron again is the effects on SHBG, 3bHSD etc.(science shit I try my best to keep that out) and the ability to block estorgen in the body and help with free testosterone.
So in short you need minimum 50mg a day I like 75mg 25mg 4 times a day.. so short answer Proviron would naturally lead to higher yield of whatever testosterone product you stack it with..