ABuy Ambien online for treating insomnia; it works by affecting the brain chemical that may be imbalanced in people with insomnia. The medication is accessible as an immediate or as an extended form known as Ambien CR. If you have difficulty falling asleep, Ambien enables you to fall asleep faster, so you can get a better nighttime rest. It belongs to a category of drugs called sedative-hypnotic, and Ambien is a brand name of Zolpidem which operates on your brain to produce a calming effect.