The most I ever took was 10mg/day. This was 2 pills as i had the underground labs product. I knew guys alot bigger than me that saw no need for more than 10mg/day. honestly, that shit is super toxic, i could feel tingling sensation in my lower back (kidneys? liver? who knows). I saw good results from it but 10mg/day was toxic enough for me. however many u decide to take, slpit them up throughout the day, it has a short half life so u want to try and keep blood levels constant.