insomnia
"I am a 43 year-old healthy female and have suffered from insomnia due to stress and/or alcohol withdrawals on and off for years, and have taken almost everything except Lunesta, from natural to prescription remedies. This works but literally only once - it's like a tolerance is built up even faster than zopiclone. I hate the groggy feeling it leaves, and over time I think it has contributed to depressive disorder. I'd say the box is right - not for continued use."