lexapro is one of many prozac type meds, none are stronger than others although the dose of them sometimes needs to be upped to get them working
docs of course should counsel about anxiety but many are too busy or lazy or simply dont know how to
anxiety and depression are separate, some anxiety sufferers are also depressed, some not, you dont need to be depressed for lexapro to help with anxiety
look up fight or flight response on the net for info about what anxiety can do to you
remember that gentle exercise and long walks are very relaxing and good for anxiety sufferers