Zopiclone is the main ingredient in Zopiclone tablets. For people with liver insufficiency as well as the elderly, half a tablet can be taken and it works equally well. Adults are advised to take one tablet at a time. 1. Hepatic insufficiency: Half a tablet is sufficient for people with hepatic insufficiency, as too much may cause accumulation and there is an increased risk of adverse reactions. 2. Elderly: For the elderly, half a tablet is sufficient for initial dosing and appropriate adjustments should be made as necessary. 3. Adults:The adult dosage of this medication is one tablet at a time. Zopiclone is a chemical drug. It is mainly used for the treatment of various kinds of insomnia, and is taken before going to bed. The intake of alcoholic beverages is prohibited when taking this medication, and the duration of continuous use of the medication should not be too long, and it is not advisable to drive or operate machinery after using the medication. This drug is contraindicated in people who are allergic to zopiclone, patients with myasthenia gravis, severe sleep apnea syndrome, and those with compensated respiratory insufficiency. It should be used with caution in pregnant women and should not be used by lactating women. It should not be used in children under 15 years of age. All the above medications need to be used under the guidance of a doctor, please avoid self-medication to avoid adverse reactions.