Finasteride: Switching from generic to brand name

[Hector93]

I am coming to the end of my first 5mg finasteride prescription, been on generic for 8 months now at 1.25mg eod and haven't noticed any change to rate of shed/ miniaturisation. I am considering buying brand name 5mg proscar with my next prescription because I have read anecdotal evidence online that some people find generic less effective.
I don't want to risk another initial shed by changing up my regimen but on the other hand it should be the same dosage of finasteride - and i'm not seeing the greatest of results so far with this generic stuff. Do you guys think this is a reasonable idea?