my dr upped my prozac from 20 mg to 40 mg...he was so surprised when i told him i have to take it at night because if i take it during the day im so sleepy..he said im the first patient to tell him that,,he said prozac is the most stimulating antidepressant out there..i told him i do have a bit more energy but i have to take it at night,,,anyone ellse have this..and how long will i have to adjust to getting used to the 40 mg..was on 20 mg 2 weeks...so hoping this works...im alos on xanax