What's a good ad that works just like remeron (mirtazapine)? that worked wonders for my anxiety and sleep but it made me irritable. anything that works just as good

Difficult to say: Remember everyone's body is different. You really should review this with your prescribing physician. As there are many options which are used to help issues like you describe in addition to the present medications that you appear to be on. Sometimes meds like neurontin (gabapentin) or trazadone are used for exactly what you describe, but again you're best served by someone who knows you well, medically.