Hi! I used to take zoloft for depression years ago and tolerated it well. I stopped when I felt better. Cannot recall if this helped with anxiety.
Now, I have been on lexapro for panic disorder for a few years, and it has held well. My Dr. Is cautious about side effects (those with panic do not need side effects!) so she had me start slowly: 2.5mg for 5 days, 5mg for 5 days, 7.5mg for 5 days and 10mg for 3 days 12.5mg for 3 days, 15mg for 3 days and 20mg for 3 days. I had no strong side effects. 20 is the therapeutic dose, and all that insurance will usually pay for. It is not unusual to need to go higher, and I have done so. I also used small amounts of ativan as needed during the time it took for the lexapro to kick in.
The anxiety is under control now, but I have gone into depression, which leaked through the lexapro. I added wellbutrin xl and it was a risk, because my Dr. Said she doesn't normally prescribe wellbutrin to those with anxiety. I can tolerate the 150mg which has energized me, but the 300mg is way too much and I get very anxious and jittery. So it seems you discovered the same?
I have had a good experience with lexapro, which is supposed to have low side effects.
Good luck!