According to the clinical trials which led to FDA approval, an amount as little as 0.5mg/day of Finasteride is sufficient to effect the drug's anti-male pattern baldness properties. Larger amounts -although for the most part harmless- do not do any additional good. Accordingly (in theory) 1/10 of a Proscar tablet would be sufficient, however it is virtually impossible to accurately divide a small Proscar tablet into 10 similarly sized pieces. GCTC recommends that users divide the tablet into 5 pieces, some of which will invariably be a little more than 1mg, some a little less. Given that 0.5mg is sufficient, there is no need to worry that one of the divided pill fragments may be a little under 1 mg. One box of Proscar therefore yields 5 months of daily Finasteride, which is the same as taking Propecia. Tablets are most easily divided with a pill cutter.
