"this is my fourth day on prozac. i have been extremely hyper/manic in the morning, but by night time i&#039;m exhausted from all the bouncing around that it helps me sleep better. i talk a lot more and a lot faster. i talk to strangers on the street, say hi to people, which is very unlike me because i&#039;m normally shy and reserved. i felt different the first day i took it. i wouldn&#039;t say i&#039;m &quot;happy&quot;, just not sad. i&#039;ve tried to think about sad things that used to bother me but i feel neutral now. today particularly i started to feel a little down. they say with every high comes a low, so i&#039;m assuming it&#039;s crash time with this medication. but i&#039;m hoping it will even out in the next few weeks, which is when you&#039;re supposed to feel it&#039;s full benefits."