Clonazepam
"I have anxiety and am agoraphobic. I have constant anxiety, which I can usually deal with without medicines. But when my anxiety becomes extreme, clonazepam calms me quickly. It also works when I take one before I am going to be in a situation that I know will cause my anxiety to be intolerable (like a crowded grocery store). I take them only as needed, not necessarily every day, so I don't worry about addiction or withdrawals. However, I did go through withdrawal once. I found that cutting back on my dosage over a couple of days alleviated my withdrawal symptoms. This medicine has helped me face my fears and I fully expect to one day either use it rarely or completely stop needing it."