I have been taking alprozalam for approximately 4 years about 3 mg I don t take them all the time but I take them more than not. I usually refill them every 3-4 months which means I take less than perscribed. I drive for a living and I have Rhumathiod Arthritis. Recently the pain became more than I could handle and I informed my employer who stated well that sucks but did not recommend time off. So I went to the dr who gave me muscle relaxers and codeine. I did not take the codeine when driving but I did take the muscle relaxers they did absolutely nothing until about 2 1/2 weeks later when they made me feel drowsy enough to pull over and rest my eyes. However before I did that I was pulled over by the State police and arrested for a DUI. Why was that day different?