Boost Oxygen Natural Portable 5 Liter Pure Oxygen Canister (8 Pack)

bought for my husband and he says it has helped and i think he is sleeping better at night. He pulls a trigger and takes a large deep breath. Can is smaller than expected and within days he asked me to order him another can. he has bad allergies causing him to have breathing issues in addition to COPD. I am glad we found something that helps, but i can see this getting pricey for an individual that needs more than an occasional burst.

It's the second time I've purchased this. It's convenient to carry in my purse, and I have family and friends with severe breathing problems. My only concern is that with time, my last one, eventually emptied itself, or I possibly had something pressed up against it in my purse that caused it to empty. I wish there was a way to tell how much oxygen is actually left in the canister