Last summer I went to my brother's wedding in Crested Butte, The altitude got to me I could barely breathe. I felt like someone was on my chest the intire time. I wanted to go visit my son this past winter to ski. I heard about FOOD GRADE! Hydrogen Peroxide Thearpy. With the premise that it puts more oxygen in your blood. I tried it for two weeks before I went, and continued to use there. I was amazed by how I could breathe with ease, and Tele-ski with no problem. My son was even amazed! So read up on it and try it. It really help me. I have taken a break from it because of the strick times when you can take it. But plan to go back on soon. For example I started at 3 drops in 8oz of disstilled water three times a day on an empty stomach. Waiting 1 hour after taking it to eat, and three hours after eating to do the HP Therapy. Every day increase by one drop, till you reach 25 drops. At this time if your condition is severe you can stay at 25 drops or reduce if you can't stand the taste. Some sites say you can take with milk or juice. But if your to take it on an empty stomach I didn't use milk or juice but just disstilled water. You can also buy Oxygen tanks there to use when you need to. Hope this helps.