"i felt better right away on 10 mg. my problems were not overwhelming me anymore. i stopped obsessing. however, side effect was not being able to fall asleep or stay asleep. i am now up to the 20 mg dose. still doing alright. doctor prescribed ambien. when i skip a day of viibryd anxiety and agitation comes back. i am in a bad marriage and am contemplating divorce after 43 years.  no wonder that i have anxiety and felt like i was falling apart."