Im at end of my Cycle (Usaly) 40-50 days every 2-2.5 years. Im on D3 since mid point last cycle. Heres what its done for me. on average i would get 40-60 clusters in that 40-50 cycle. very heavy at mid point and intensity all over the map. i was using Rizotripan 10mg at the time. I belive the Rizo caused rebound headaches to constantly occur. since going on D3 and 0.8 gram of zoomer every 5 days i have had 19 total this cycle. 6 of the attacks have been horrible. the others i have fought off with deep breathing and an icepack. Im on day 35 so i would say this has definitely been one of my most tolerable cycles. All 19 clusters occurred between 11pm-4am. longest attack was 4 hours. shortest was 30min. i have not tried Oxygen yet, but spoke to my dr the other day and have fast tracked my set up for next cycle. next cycle i should be mostly pain free. Thats a win. Keep your chin up. we get you and are here when you need. its scary at the begining but be proactive. last piece of advise, stay away from procesed meats like salami peperoni cheese, alcohol, smoking. Buy Chaga mushrooms from health food store and keep ginger on hand. Chaga is one of natures most potent anti inflammatory medicins. it has been key to my controlling the shadows and rebounding well from bad attacks. use a golf ball sized chunk of mushroom and a soop spoon of ginger in tea.