Buy Zopiclone Online at the Lowest Price Guaranteed Zopiclone is a prescription medication used to treat insomnia and other sleep disorders. It belongs to a class of drugs known as hypnotics and works by slowing down brain activity, promoting sleep. Available in 3.75mg and 7.5mg doses, Zopiclone is typically taken just before bedtime. Its effects are usually felt within 30 minutes and can last for several hours, helping users fall asleep faster and stay asleep longer. Common side effects include drowsiness, dizziness, and a bitter taste in the mouth.