There should be little or no waiting period, and the way to manage that is by gradual reduction of the zoloft while increasing the Lexapro. Cymbalta is not recommended for anxiety, only depression.
Well, I know that everyones results are a bit different, but when I started effexor xr ( I no longer take it and it was almost 2 years ago ) but I noticed a difference right away; within 2 weeks all my depression and anxiety were gone. I seen a counselor too ( a christian one )and that really helped as well. Within one week of taking effexor and ativan I was sleeping through the night and not having any more horrible dreams.
I started feeling better so fast that I wondered if I was really depressed in the first place and if I even needed the medication. But I knew in my heart I did, because I went through the depression 2 times before and I suffered with the symptoms for several weeks before I finally got some help; so I know I needed it, but I was just amazed at how fast I felt better. But remember, everyone is different. Keep up with the counseling, I seen a psychiatrist and counselor for 18 months, I am now depression and anxiety free and also medication free as of Febuary.