Zolpidem, commonly known as Ambien, is a sedative-hypnotic medication prescribed for the short-term treatment of insomnia. It works by acting on GABA receptors in the brain, promoting relaxation and sleep initiation. Zolpidem is effective for those struggling to fall asleep but may not be suitable for maintaining sleep throughout the night. Common side effects include drowsiness, dizziness, and unusual sleep behaviors like sleepwalking.