Dear Dr. Rassman,
Thank you for your very informative blog. I have been on Propecia for nearly three years with good results. For cost reasons I am thinking of getting Finpecia when I am next in India. Do you believe switching from Propecia to Finpecia would have any effects for a good responder like me? I will only do it if the transition can be seamless.
Many Thanks
Assuming Finpecia is 1mg finasteride, I do not expect there to be an issue. Propecia is just the brand name for 1mg finasteride, and the generic form is sold by a variety of different names outside of the US (where it is not legally available until late 2013 due to patent laws).
There might be some differences in the manufacturing process, but chemically Finpecia (made by Cipla) is the same as Propecia (made by Merck).