Zopisign 10mg tablet is a prescription medication used to treat insomnia, a sleep disorder that makes it difficult to fall asleep or stay asleep. It belongs to the class of drugs called sedative-hypnotics and works by slowing down the activity in the brain to induce sleep. The tablet is usually taken orally once a day at bedtime and should not be taken for more than two weeks without consulting a doctor. Common side effects of Zopisign 10mg tablet include dizziness, drowsiness, headache, nausea, and dry mouth. It is important to avoid alcohol and other sedatives while taking this medication as it can increase the risk of side effects.