Bon, when I was at NJH I was told Walgreens, etc. sell BOOST OXYGEN which is a little bottle of oxygen you just hold up to your mouth and it sprays oxygen into your lungs. It works great and I took it everywhere with me (it fits in your purse). I really didn't use it much but I think it was peace of mind that I had it if needed. Once I got home I ordered it on Amazon.