It seems like you're referring to "Zolpidem," a medication primarily used for the short-term treatment of insomnia. Zolpidem is commonly known by its brand name Ambien. It belongs to a class of drugs called sedative-hypnotics, which work by slowing down brain activity to promote sleep. Zolpidem is known for its rapid onset of action and short duration of effect, making it particularly effective for initiating sleep.

Mechanism of Action
Zolpidem acts on the gamma-aminobutyric acid (GABA) neurotransmitter system in the brain, specifically targeting the GABA-A receptors. By enhancing the effects of GABA, a neurotransmitter that inhibits brain activity, zolpidem induces sedation, relaxation, and sleepiness.