Jeff, I feel your pain – literally. Back in the day, (early ‘90s) I got the worst ear/sinus block when flying. Go Navy! When I landed, the flight doc prescribed some 10mg Maxalt (Rizatriptan) and since that episode, to this day, that is the ONLY painkiller that has ever worked for me when this reoccurs on a real bad basis. (For info, a ‘real bad’ episode feels like a wiseguy just shoved an icepick behind the left ear.). Anyway, since that episode, whenever I get the feeling that a cluster headache is coming on, I immediately pop two extra strength Excedrin and squeeze some Afrin in my left nostril, and I’m (usually) good to go. A frozen gel pad on the back of the head near the left mastoid behind the ear if need be. When the above doesn’t work, out come the Maxalt. (For info, my pain clinic doc has diagnosed my condition as cluster headaches instead of migraines.) Through the years, I realize that the Maxalt tablets are ‘silver bullets’. My pain clinic doc told me though to treat them as such, based on the stroke side effect you mentioned earlier. Bottom line, diet, exercise, OTC drugs and Maxalt have kept this bitch at bay for me. That said, I have never taken any of the cannabis drugs previously mentioned – ever. But hey, if it works for others, who am I to disagree?