Benzodiazepines, also known as "benzos," are a class of medications that slow down activity in the brain and nervous system. They are depressants that produce sedation and hypnosis, relieve anxiety and muscle spasms, and reduce seizures. The most common benzodiazepines are prescription drugs such as Valium®, Xanax®, Halcion®, Ativan®, and Klonopin®. Shorter-acting benzodiazepines used to manage insomnia include estazolam (ProSom®), flurazepam (Dalmane®), temazepam (Restoril®), and triazolam (Halcion®). Midazolam (Versed®) is a short-acting benzodiazepine utilized for sedation, anxiety, and amnesia in critical care settings and prior to anesthesia. Benzodiazepines slow down the central nervous system and may cause sedation, drowsiness, dizziness, and impaired coordination. They are classified as controlled substances in many countries, including the U.S., and require a prescription to obtain. Benzodiazepines have the potential for abuse, addiction, and overdose, particularly when used in combination with other substances such as opioids.