amitript==this can cause the chemisrty in your brain change -i look up in PDR=YEARS AGO WHEN I TOOK THIS DRUG-I ALSO GAINED WEIGHT-READ IN THE PDR--ABOUT THIS-I TOOK THIS FOR YEAR-WENT FF OF IT ON MY OWN-WITHIN 6 MONTHS I WAS DIAGNOSE WITH A CHEMICAL INBALCE,,I DONT KNOW IF IT WAS BECAUSE I WENT OFF OF COLD=U HAVE TO SLOWLY GET OFF THIS MEDICINE KSWISS