What does the medical abbreviation BZD mean?

Benzodiazepine

Benzodiazepines are a class of drugs used to treat a variety of conditions, including anxiety, insomnia, seizures, and muscle spasms. They work by slowing down the activity of the central nervous system. Benzodiazepines are typically prescribed for short-term use, as they can be addictive. Some common benzodiazepines include alprazolam (Xanax), clonazepam (Klonopin), and diazepam (Valium).