For years, Janey Karp has battled depression and anxiety with the help of prescription drugs. Though millions of Americans do the same, Karp admits she is intensely private and can't help but feel stigmatized for needing medication to feel normal. So when the 53-year-old Palm Beach resident read the Walgreens printout attached to her prescription last week for the sleep aid Ambien, she couldn't believe her eyes. Typed in a field reserved for patient information and dated March 17, 2005, was "CrAzY!!" In another field, dated Sept. 30, 2004, it read: "She's really a psycho!!! Do not say her name...