My mother is on alprazolam, just recenty prescribed Zoloft (she had bowel obstruction surgery in April and wound is not healing properly). She says she cant sleep and her mind won't shut down, she worries that she will never get her health back again. She is 82. Now one of her drs prescribed mirtazapine to help her sleep. I'm concerned she is on way too many drugs. Any interactions between the 3? she doesn't want to take mirtazapine because she read that it too is an anti-anxiety and she knows that alprazolam 0.5mg(taken 3x daily) is also the same type of drug. She is also on COPD meds, I believe spirea. HELP!