How long until Zoloft helps panic attacks?!

How long until Zoloft helps panic attacks?

I've had panic attacks for approximately 20 years. In the 90's the antidepressant Pamelor (nortriptyline) helped me for about 4-5 years. Then Paxil helped for another 4-5 years until it recently "pooped out."
My Psych switched me over from Paxil to Zoloft in the earlier part of May. I started at 12.5mgs and have worked my way up. Since last Tuesday, July 3, I'm taking 150mgs. I'm actually starting to feel somewhat better and have been leaving the house for short trips to the store and around town.
Question is how much Zoloft do you think it will take for me to get rid of these darn panic attacks? If history is any indication I usually need pretty high doses of antidepressents to get a response. I had to take 150mgs of Pamelor (nortriptyline), then Paxil 40-60mgs to get a good response.
I've only been on the Zoloft at 150mgs for one week. How long until I see if a "bump up" is needed?
Thank you

I am on Zoloft to for exactly the same reason. (I have been on it since Oct. 2006) I actually started going to counseling to aid the Zoloft for my panic attacks. Although Zoloft is a great medication for anxiety/depression, it isn't a cure all. You may need to talk to a counselor that specializes in acute panic attacks. I found that after being in counseling combined with taking the Zoloft, it has helped so much. And about needing a "bump up", you may need to wait a couple of weeks before you talk to your doctor, just so you can see if there is a noticeable difference. If you feel like you are steel really on edge with these panic attacks, go back to your Dr. and let him/her know what is going on. Good Luck!