I have been taking trasadone for at least 10 years or more. My teeth have turned almost brown in color, I have gained a lot of weight and I am still depressed and anxious. My docotr told me they do tend to stop working after long periods of time. What else is out there that can help me so I can stop taking trasodone? My memory is about shot and sometimes I cannot remember from 0 to 30 seconds back and other days I have good recall. What is that from? Should my blood be tested to see what level my serotonin is?