Revivogen does indeed attack the cause of male pattern baldness, where minoxidil does not. In my opinion, any regimen should fundamentally attempt to stop the balding process, which revivogen does.
Finasteride does too, even better. I assume you know this and are trying to avoid side effects... I say give it a trial run and if you have any problems quit and try revivogen. Side effects are quit rare and go away when you stop using finasteride. Plus I'm pretty sure if you cut up proscar it's cheaper than revivogen, and it's easier to take a pill than apply a topical.
But anyways revivogen is still a better first choice than minoxidil. I don't use either though so I'm not a primary source. I can only confirm it's superiority in theory. I do use finasteride though and it seems to be working. I'm three and half months in and shed much less hair than I used to. No lasting side effects whatsoever.
MH