Hi Gina,SC is right re everyone reacts differently to the medications. It also depends on what type of anxiety you are experiencing. There are many types of anxiety disorders including panic disorder, obsessive compulsive disorder, post-traumatic stress disorder, social anxiety disorder, specific phobias, health anxiety and generalized anxiety disorder.
I have PTSD, GAD, and Depression so the meds chosen for me may not work for you. However, certain therapies - CBT - seem to have the capability of helping most people with dx anxiety disorders.
Hope this help you.