anxiety
"I have been taking two (one in the morning and one at night) 5mg Valium for the last five years.  It has worked wonders for me. I have not changed the dosage and have had no reason to increase it. Before I started this medicine, I would literally tremble when I would get nervous.  I don't even feel it in any way when I take it, but don't get anxious and am able to make decisions that I can't when I'm so nervous.  This medicine has worked miracles for me and if anyone thinks because it is a controlled substance that it is not a really good medicine for some people then they are wrong."