I've. had ibs for many years. i'm on anti-anxiety meds too. lately, no matter what i eat, i still get terrible diahrrea. what can i do?

Multiple approaches: Increase anxiety med so that you are calmed: if you're on zoloft 50mg, increase to 100mg daily to get adequate mood control. Identify trigger foods and avoid them! this may take a long time, but may improve your quality of life. Look into different medications with your doctors: consider antispasmotics, enablex, (darifenacin) cholestyramine, triptans, and any other creative "off-label" treatment that works 4 u!