We so often turn to drugs in this day and age to resolve our problems with either self or others. I am very glad to hear you get off these life robbing pills. Have you ever tried changing your diet? maybe going back to the original diet. There are many forums here on this site that can help you. Search for God with all your heart and you will find him.
Some demons may be cast out only through prayer and fasting. MT17:21 Jesus does not want us to be miserable or unheathly. He only asks us to acknowledge our bodies as the living temple of God and not to defile that temple wether it be by food, drink, what we watch, or listen to. Remember 3John 2 "Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth."