I was going to write something about the horrific side-effects of montelukast, as described by Wikipedia, but events overtook me.
I never really recovered from that week of living out of a suitcase and in particular from eating my first restaurant pizza in two years. Despite taking montelukast daily, by the middle of last week I was, bizarrely, losing my hearing in one ear and still suffering quite a few other problems. I think it was severe sinusitis, aggravated by lots of midsummer grass and weed cuttings.
Then I got frightened by reading about the side-effects. So for seven days it's been fish, zero-salicylate food and no pills. I'm still not sure I've stabilised but there's less hay fever than before.
I was talking to someone about fish and meat the other day and they were reminiscing about one of the big city markets. According to them, the meat market was loud and aggressive, the fish market much gentler. So does eating fish rather than meat make you calmer, maybe help to sharpen the brain also? I'm not sure.
Here's the Wikipedia article on montelukast.