I often feel queasy right after (or even during) a meal. After I went on Celexa (an SSRI), it stopped for a couple months, but now it's coming back. Makes me feel miserable. It seems like only a med that affects serotonin gets rid of it for me. Lotronex eliminated it entirely, along with almost all the other IBS symptoms too. It doesn't usually matter what I eat--it's the act of eating that sets it off.