Answer: Inconsistency in Finasteride. Finasteride's actual half life is between 4 to 7 hours and occurs through a combination of liver and urine. Despite this, with longer term use, finasteride can accumulate making its actual elimination longer than this. No study has examined the effects of discontinuation of finasteride so much of this data ... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.