Mirtazapine for anxiety

I’ve been suffering with severe anxiety and as a result, crippling insomnia which has resulted in me being signed off work. My anxiety has had a significant impact on my work and social life and I’ve completely lost myself. I ended up having a complete nervous breakdown over the weekend as the chronic anxiety and exhaustion from insomnia has pushed me over the edge. I’ve never taken any time of antidepressant before and would like to know people’s experiences taking Mirtazapine for anxiety.