Effexor Xr symptoms

I've been taking Effexor xr [37.5mg] for about a week now, and the first three to four days of taking it i didn't feel any symptoms. I recently have been having trouble sleeping where as before i took the medicine i never had any problems sleeping. I just feel very restless, my body is very uncomfortable, its like i have so much energy locked up inside of me but I'm extremely tired at the same time. I was just wondering if these symptoms will eventually go away after taking the medicine for a bit longer..  or does my body just need to adjust to taking the medicine ?!?!?!  

[Hensley258]

Your body may adjust in a few weeks, or it may not. Kind of hard to know because everyone is different.

Why Effexor as a first choice? Most Psychiatrist prefer to try SSRI meds as a first option, before resorting to Effexor. Do you not respond to SSRI medication?