I don't know what mil or ExtRel; never had heard of it; but THAT was the best sleep. I don't like medication in which I will feel as if I've downed a fifth of liquor before bed. That is what Xanax did to me. I started taking the Xanax in the mornings because of anxiety, and once at home 10-11, I was tired. But I was so groggy. New doc could not believe my previous doc kept me on 1.mg of Xanax for 5 years. I was glad regarding the Ambien also; but I hear there is only a two week treatment cycle and the patient is cut off?