The CR product is branded as Uninorm® 10mg: zolpidem hemitartrato; 14 tablets per box. Requires an Rx which can be had such that the Rx is available for you the next day. Farmacia Curime, up from Hotel La Amistad.
Zolpidem is NOT a benzodiazepine (Xanax, Valium, etc.) and is most effective in initiating sleep. Alcohol poteniates (amplifies) the effects. Know what you're doing.
Triazolam (Halcion) is what is used by many in the diplomatic corps: dinky half-life; fast acting; effective. Caution: Exceeding the dosage WILL induce full blown amensia, and how.
I get great amusement from reports from people who take CNS depressants and then have "amnesia" such that when they get up in the morning following usage, they are shocked to find the ice cream, the Oreo's, the hamburger wrappers, and all the other stuff they've done while under the influence! Things like starting little projects be they paper work or arranging the CD/albums in order and the subsequent unfinished nature of these episodes; driving the car

to a store; buying stuff, blah, blah, blah.
Technique: empty stomach; ingestion of Rx; followed by sugar/carbohydrate intake: Most won't know what hit them. Get alcohol in the mix.....good night. WARNING: Use that stuff at your own risk and learn how YOUR bad self responds. Every person responds in a bit different fashion.