insomnia
"Lunesta is the most incredible sleep aid on the market - smooth and no hangover in the morning. It is worth the cost. Under much stress in 2008, I began taking Lunesta 3 mg (for 1 month), then moved to the 2 mg for several months, then to the 1 mg, which is enough of a sleep aid to get the job done for me. The metallic taste, once the medicine is in your system, is noticeable but not bad and for me, goes away quickly. You absolutely must take it on an empty stomach. I definitely noticed a tendency to weight gain and fluid retention on all 3 dosages, though less tendency to fluid retention on the 1 mg. I just stopped taking it this week (March 2011). I'm not in bed until 2 - 2:30 am, but I can sleep without it."