Please note that many Rx drugs have additional benefits which have been documented by clinical experience, that are outside of the bounds of the original FDA approval. For instance SSRI anti depressants have been found to be successful in treating panic disorders and acute anxiety syndromes. Doctors frequently prescribe for treatment of "off label" conditions, and therein lies the dilemma with insurance. Many companies will not spend the money to take an existing product through the FDA approval process again for a new indication for use, regardless of what the medical community is seeing clinically. Sometimes the only way around this BS is to have the doctor write a diagnosis of something that he actually isn't treating you for, in order to have the insurance pay for it. Obviously this is a touchy area among doctors and isn't spoken of as a matter of routine for obvious reasons. Lexapro is one of the few antidepressants which is being run through the process again so that the Rxing label can state that it may be prescribed for acute panic and anxiety disorders. Other SSRI's which function through the same mechanism are not following suit. This is a financial issue not a clinical one. Vioxx has proven to be useful in areas that are far from its original approval and labeling OK