[Delk]

> I experience some habituation actually.

I suppose it can be quite different for different people. I stopped using it because it often (not always) made me still feel tired and unfocused in the morning, something that apparently also doesn't happen to everyone.

> But my actual doctor went like "wtf is this?"

Different country, but where I live, prescribing low-dose mirtazapine for insomnia appears to be fairly common practice even though it's off-label. I've had it suggested or mentioned by three or four different doctors, including GPs. I also know several other people who have been prescribed it.

The doctors here seem to prefer low-dose mirtazapine as safer over typical CNS depressants such as benzodiazepines for insomnia nowadays, at least if the problem may be longer-term.

So it's not really something particularly weird. Of course different countries also have different medical cultures so I guess it's not surprising if it's not that common in other places.