Yeah, I'm thinking about this because I get sides from 1mg every day.
It's just this quote that got me thinking..
But several studies show that a single dose of finasteride suppresses serum DHT for 7 days or more (Eur J Drug Metab Pharmacokinet. 1991 Jan-Mar;16(1):15-21, J Clin Endocrinol Metab. 1990 Apr;70(4):1136-41, Prostate. 1989;14(1):45-53).