I have emotionally abusive coworkers so it's a bit different for me but still extremely stressful. I have a hard time sleeping because of it. I am a coordinator at my job so my work load is quite extensive so I feel your stress, heavy workload plus emotional abuse is one of the most exhausting feelings I've ever experienced.

I don't do much about my situation but try to take good care of myself on my days off. I no longer do any work related things on my days off even if it means twice the workload on work days.

Do you have an H.R. Department? I suggest speaking with them they are there for these types of situations.