Hi @victorp, really sorry you had to find us here, but it's the best place to learn about this sh_t disease!!!!, sorry to hear it took so long to get your diagnosis but that is usual, you should be able to buy a regulator to up your O2 to 15L/PM, as for your shadows have you tried Ginger. A lot of us use it, you can get it in lots of different forms, Candy, tea, tablet, it seems to work for a lot of use