Sublinox is a short term treatment of insomnia. Sublinox is a sedative-hypnotic, or sleep medicine. It works by helping to increase certain natural chemicals in the brain that cause sleep. Sublinox may cause drowsiness, dizziness, blurred vision, or light-headedness. These effects may be worse if you take it with alcohol or certain medicines. Use Sublinox with caution. Do not drive or perform other possibly unsafe tasks for at least 4 hours after you take Sublinox and until you feel completely awake. Do not drive or do anything that may be dangerous until you know how you react to Sublinox. You may be drowsy without realizing it.