Diazepam
"I have suffered with anxiety and panic for years, since about 14 y/o. I have tried several different benzodiazepines over the years but always go back to diazepam. I can use it for both preventing a panic attack before a specific situation, or use it to relieve one once it's started. You can even take it the night before a specific event for nervous insomnia. Diazepam calms me down without tiredness or feeling spaced out."