very healthy at 54, just cannot sleep since hystorectomy sept. 2001. i'm desperate, just changed Dr, because i felt they didn't care or didn't believe me. I tried all kinds of hormone replacements, natural and synthetic, sleepings pills tried them all, it i get 4hrs nightly I'm lucky, the only thing that use to work is zanac, but my body is now becoming resistant to that also, so some nights zanac works and some nights they don't. Please tell me you have something that works. I'm loosing my mind. HELP!!