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Hello everyone, I found this site a few weeks ago and have been very much appreciating all the wonderful information and advice contained within. It's also very nice to know there is a community of people that have been going through the same types of things. Much love to you all! After two trips to the emergency room two nights in a row about 5 weeks ago, I was referred to a neurologist. It took about a month to get the appointment and I was prescribed sumatriptan injections (6mg/0.5ml per injection), oxygen and I was switched back to verapamil 120/mg 3x per day after having been on propranolol a while and verapamil 80mg 3x per day before that by my nurse practitioner. Anyway, I'm trying to get myself set up with both. I'm normally pretty good at finding information, but I can't seem to find any reference to either of these questions. I'm willing to bet they have been answered, but my head right now just won't let me investigate and much as normal. Sumatriptan When I finally got enough money to get a partial fill of my prescription, I was expecting to get the auto-injector form like what was on my GoodRX coupon. When I got home, I found that I had simply received 5 vials each containing 0.5ml. Apparently enough for one dose each. And that was $122.00 haha. Wow. (No insurance, but the coupon sure helped!) I've seen on this site where most people say that 3mg is enough for an injection treatment, so I have two questions: 1) Is it OK to use each vial for two doses? 2) Is there a certain size/gauge syringe that I need to be looking for? Tubing size for welding (CGA-540) regulator adapter I have ordered the Cluster O2 kit from clusterheadaches.com. However, I don't see in the description what the inside diameter of the tubing is. I'm going to guess 1/4"? I'm going the welding oxygen tank route, because even here in Dallas, TX I'm having a hard time finding large medical oxygen tanks. I can get what's probably an M size tank for $250 with $25 refills. But I need to know what size adapter I need to get so that the tubing will connect to the regulator. Does this one look OK? (Dixon OA61 Oxygen Hose Brass Fitting, Coupler, 9/16"-18 UNF Right Hand Female, 1/4" Hose ID Barbed ) https://www.amazon.com/Dixon-OA61-Oxygen-Fitting-Coupler/dp/B007D5KS2A/ The regulator I am looking at is this one (Victor Technologies 0781-9400 G250-150-540 Medium Duty Single Stage Oxygen Regulator, 150 psig Delivery Range, CGA 540 Inlet Connection) https://www.amazon.com/Technologies-0781-9400-G250-150-540-Regulator-Connection/dp/B00BZFB2TC/ Thanks! Thanks to everyone for all the long-distance support even when you didn't know it. Super glad I found this site. Best regards, Terry