Ambien (generic name: zolpidem) is a sedative-hypnotic medication primarily prescribed to treat insomnia, especially for people who struggle with sleep onset or sleep maintenance. It works by enhancing the effects of GABA, a neurotransmitter in the brain that promotes relaxation, which helps patients fall asleep faster and potentially stay asleep through the night. Ambien is usually taken right before bedtime, as it acts quickly. Standard doses can vary, and doctors often prescribe the lowest effective dose to reduce side effects.