Would taking more of my antidepressants help me concentrate?

Actually, not a stupid question. It is probably the Zoloft that is causing your problems concentrating. i was on a very similar drug and it nearly destroyed my life - literally. Zoloft can do a lot of good and a lot of bad at the same time. Check out Dr. Peter Breggin's website if you do not believe me. Also, there are lots of other sites that provide similar info - so look it up. But definitely do not take extra zoloft.