There are side effects of taking Zopiclone for 10 years. The possible side effects of taking Zopiclone are dry mouth, bitter mouth, and in severe cases, muscle weakness as a result. If this drug is taken for a long period of time and then suddenly stopped, it can cause rebound insomnia and nightmares. Some patients may also experience muscle tremors, leading to dependence on this drug, as well as belligerence, irritability, fearfulness, headaches, and fatigue. It should be noted that it is contraindicated in patients who are allergic to the product, uncompensated respiratory insufficiency, myasthenia gravis, severe sleep apnea syndrome. Taking zopiclone needs to be taken under the guidance of a professional doctor, do not blindly use the drug on your own to avoid serious conditions.