Day 5 of 10mg prozac (fluoxetine). take it in morning after levothyroxine. by 7pm i'm exhausted! but i can't seem to sleep more than 6 hours! help!

6 hours of sleep: may be all that you need although it is generally recommended that one attempt to get 7-8 hours. The effects of Prozac are felt typically after 10 -14 days. Discuss your concerns with your doctor after you give the medicine another 5-9 fays to do its thing. You might consider using a different agent (Paxil (paroxetine) and Prozac tend to be "activating" )