Zopiclone is a prescription medication primarily used for the short-term management of severe insomnia. It belongs to a class of drugs known as nonbenzodiazepine sedative-hypnotics. Zopiclone works by interacting with gamma-aminobutyric acid (GABA) receptors in the brain, which helps to slow down activity and promote sleep. 
Important Considerations and Usage:
Common Side Effects: Some common side effects associated with zopiclone use include a metallic or bitter taste in the mouth, drowsiness, dizziness, a feeling of light-headedness, and dry mouth.
Contraindications: Zopiclone is not suitable for individuals with certain medical conditions, such as severe liver or kidney problems, sleep apnea, myasthenia gravis, or a history of substance abuse.
Alcohol Interaction: It is advised to avoid consuming alcohol while taking zopiclone. 
Administration: It is typically recommended to take zopiclone immediately before going to bed.
Duration of Treatment: Zopiclone is generally prescribed for short periods, often ranging from a few days to two weeks, due to the potential for developing tolerance and dependence
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Potential Risks:
Dependence: There is a risk of developing physical or psychological dependence with the use of zopiclone.
Withdrawal Symptoms: If the medication is stopped suddenly, individuals may experience withdrawal symptoms, including rebound insomnia, anxiety, tremors, or, in rare cases, convulsions.
Cognitive Impairment: Zopiclone may potentially lead to memory loss (anterograde amnesia) or confusion.