"i was prescribed 10 mg once a day for depression and anxiety. after 3 months, i did notice a change in my mood. i would say it took about 3 weeks for me to notice a difference. i wasn&#039;t as anxious, less panic attacks and i wasn&#039;t as &quot;down in the dumps&quot;. however, for me the side effects nulled the good. my sex drive decreased a good bit which caused problems in my relationship. i also experienced increased headaches, brain &quot;zaps&quot; and i was always tired. i would yawn all day long literally. being a full time college student, this was not good. i was too tired to enjoy life. all i wanted to do was sleep. i am now on prozac."