Zopiclone can not be taken two capsules a night, overdose may cause some damage to the body, patients taking Zopiclone can not change the dosage privately. Zopiclone is available in 7.5 mg form, and healthy adults take 7.5 mg of Zopiclone before bedtime, while weaker or older patients take 3.75 mg, or half a tablet. The daily dose administered should not exceed 7.5 mg. therefore, it is not acceptable to take two tablets in one night. If an overdose is taken it may have an effect on the central nervous system and patients may experience discomfort such as vertigo, dizziness, hallucinations and in severe cases, transient memory loss may occur. It should be noted that after the effective dose of zopiclone has been reached, it is necessary to be extremely cautious in adjusting the dose. For most patients, increasing the dose of the drug not only fails to enhance the efficacy of the drug, but also may increase the risk of adverse reactions in patients. If the patient needs to adjust the dose, it is recommended to go to a regular hospital and listen to the doctor’s advice or opinion. It should be noted that allergies, compensated respiratory insufficiency, severe sleep apnea syndrome, myasthenia gravis patients are prohibited from using this drug, pregnant women, the elderly should be careful to use, the use of drugs need to be in the help of a doctor to follow the doctor’s instructions, to avoid private use of the drug to the body harm.