1 - 15 years on Finasteride.
2 - I had GREAT results. The combination of Finasteride + minoxidil basically halted my hair loss for those 15 years.
3 - For the last 10 months my hair loss has accelerated dramatically. I basically went from thick, great hair to thin, diffuse hair, particularly in the front and crown area. The hair loss has been associated with an itchiness and tingling in the scalp. Unfortunately, it seemed like my old regimen was no longer working so I needed something stronger and I switched from Finasteride to Dutasteride
4 - I take 0.5mg of Dutasteride daily.
5 - I have not seen any results with Dutasteride yet and my hair loss has progressed badly.
6 - Been on Dutasteride for a little over 2 months. Hopefully that's too short to determine how helpful it will be. I still try to use minoxidil in my regimen, but my scalp seems very sensitive to it now after years with no problems.