Diazepam is an oral prescription that helps to treat anxiety, alcohol withdrawal, panic attacks, and seizure disorder. In some cases, doctors also prescribe Diazepam relieve skeletal muscle spasms and to provide sedation before medical procedures. This drug belongs to the benzodiazepine group, which works as a central nervous system depressant to calm the brain and nerve cells. An anxiety disorder is a mental illness characterized by feelings of excessive fear or worries that interferes with a person's daily activities. Buy Diazepam Online. It works by increasing levels of a calming chemical in your brain known as gamma-aminobutyric acid (GABA), which helps to relieve anxiety, stop seizure attacks (fits), and relax tense muscles.