Lorazepam tablets usually take effect two hours after taking the medication. Lorazepam tablets belong to the benzodiazepine class of sleeping pills. It is suitable for the treatment of anxiety disorders and has a sedative-hypnotic effect, but the effect of anxiolytic effect is more obvious, the induction of sleep is significant, widely used in psychiatric patients, is effective, safe, well-tolerated drugs. Lorazepam tablets may have dependence, long-term use is generally not recommended, because lorazepam tablets can inhibit the function of the central nervous system cortical activity, long-term use of the patient can appear respiratory depression, dizziness, gait unsteadiness, fatigue, memory impairment and depression, and many other symptoms. The drug is not recommended for people with lung diseases, the elderly and young children. The drug is prohibited for people who are allergic to the components of the drug, patients with acute closed-angle glaucoma, patients with untreated open-angle glaucoma, patients with sleep apnea syndrome, people with severe respiratory insufficiency, pregnant women in the early stages of pregnancy, and children younger than 6 months of age. Lorazepam tablets should be used correctly under the guidance of a doctor, do not use the drug privately.