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by Riseed 711 days ago
> Honestly don’t bother with canned O2. It is not 100% pure, which is an absolute necessity, and they don’t deliver nearly the quantity you need to knock out a cluster

They definitely don't knock out the cluster, but do seem to slightly lessen the pain in minutes. I wish triptans helped, but no luck yet with any we've tried.

Thanks for the help with O2 :)