[pluijzer]

Just as another data point, my ex-girlfriend also had debilitating cluster headaches. Psilocybin, not microdosing just tripping on it, would make it stop for a couple of months.

Also, you might be familiar that taking pure oxygen during an attack in known to stop the attack. The problem is that it builds a tolerance were you need more and more which brings problems of its own.

[di456]

I know someone who's had success stopping an in-progress visual migraine with low dose psilocybin.

They tried it based on some published research. Here's one such study. https://n.neurology.org/content/66/12/1920