anxiety
"I have been taking Valium every day for 5 years for anxiety and muscle spasms. Good to kill 2 birds with one stone.

I take a relatively microscopic dose of 2.5mg/day, and after 5 years, I have probably built up a tolerance to it so that this tiny dose has no physiological effect any more. But even if I'm now getting the placebo effect from it, I don't care. I don't have panic attacks any more and that's all I really care about."