insomnia
"I am 30 years old and going through some career-related stressful period for the last few months, as a result of which I have been having bad insomnia, which I never had in my life before. I am not only having difficulty falling asleep, but also sustaining it. 
I started taking zolpidem 10 mg, but I cut it in half, eventhough it's only half a dose for an adult. *I am also 200 lbs. I took about 5 tablets in the last month or so, and the results have been largely positive. 
I fall asleep after taking zolpidem (half a dose), albeit sometimes after 1-2 hrs after ingestion. However, I sleep longer, and better. The only side effect is a mild hangover-like feeling the day after. In sum, take it as needed."