"i am 28 year old female. i was prescribed 10 mg.  i read a lot of reviews on celexa where people said they felt a difference the first week and was starting to get really disappointed when i felt no different in that time frame.  i have been on it for exactly 7 weeks now and am just now starting to notice a difference. my interests have returned, i have more energy, and i am able to focus.  overall i am definitely happier and don&#039;t feel down in the dumps anymore.  the only side effect i had was it made me very tired in the beginning but that has gone away completely.  for me, celexa is working!"