question: I am taking my 7 year old son that weighs 40lbs to the orthodontist today for spacers. We had these done a few weeks ago and he flipped out and was very combative because he was scared so we couldn't finish the treatment. I take Xanax on occasion for anxiety and  I was told it would be okay to give .25mg to him 30 min before we go in. I am very nervous about giving this to him. Is it safe????