Hi, Weight gain and increase in appetite is a well known side effect of divalproex sodium. Exercise and diet control is necessary. If severe, it can be managed with adjunctive medication or switching to an alternate drug. Consult your treating psychiatrist about it. Dry mouth is a well known side effect of fluphenazine. You can reduce it by rinsing mouth frequently and chewing sugarless gum or candy (not sugar-containing, they increase risk of fungal infections and dental caries). These drugs are not tolerance or dependence producing. Try and gain insight into your illness, the reason why these drugs have been prescribed. Maybe they are helping you lead a better life. Hope this helps, Dr Anjana rao.