I've read an independent study that is grilling Merck because 1mg is not more effective than .2mg I believe this to be true.
I am personally taking .5mg and have been for 4 months with amazing results, and I do not think it would've been better if I took 1mg. But everyone is different too. BUt to answer your question the best I can: Yes.
Here is my story with photos:
http://www.baldtruthtalk.com/showthread.php?t=1306
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