Zopiclone is a type of sleeping pill that can be taken for short-term treatment of severe insomnia. It helps you fall asleep more quickly, and also helps stop you waking up during the night. It works by affecting a calming chemical in your brain called gamma-aminobutyric acid (GABA). Zopiclone comes as tablets. It also comes as a liquid for people who find it hard to swallow tablets, but your doctor will have to order this specially. This medicine is only available on prescription.