New and Larger, Boost Oxygen Natural Energy in a Can, New Large Size: 10 Liters over 200 One-Second Inhalations, Pack of 4

Oxygen in a can, what will they think of next? Still, why not? If you have seasonal allergies or just need a boost, lol, throughout your day, I can think of no better way than sucking on a can of air. Scientists are now saying that the fountain of youth is hyperbaric chambers. so maybe we can all turn back Father Time with a little fresh air?

No matter what people say, this works if you are short of breath. At least for me anyway. This came in a timely manner and in good condition. I will buy again.

I was surprised to find this stuff, really figured I'd have to get am Rx, but my dad was having some out of breath issues after exertion so I ordered this. He says it really helped, that's hearsay or course (dad's an attorney) but it is what I was told. They felt EMPTY! Then I read up about it, O2 weighs essentially nothing, and the cans are super light. Anyway, if you get short of breath after running or cutting a lawn or whatever, these do work. So says my dad. :)

Helped raise O2 level. Inhale once and then rebreath into CLEAN paper bag 3-4 breath cycles. Lungs not absorb all O2 on one cycle. O2 concentrate machine is optimum situation. Might be handy cockpit emer. item for pilots above FL300. Below FL300, dive or become kerosene powered post hole digger.

Bought for a trip to 10,000 ft & it worked great! Had to get used to the can feeling empty & realizing air weighs nothing 😂 Definitely a good buy!

It's air. In a can. Bought it as a Covid placebo. Seemed to do the trick. Dry as the Sahara though. Keep some water handy if you really go at it or you're going to get a sore throat.

This oxygen does work. It is weightless because it is compressed gas. I have never had an "empty" one despite using quite a few canisters over the years. Add a can to your first aid supplies. Helps a lot if you get winded. I used one once when my monoxide alarms went off in the house, until I got some windows open. A can lasts quite awhile if used properly.

Product works as intended, And works well. In fact when I used to work in a national park this is what we would use for first aid when someone was suffering altitude sickness. So I don't want to talk bad about the product.However, one of the cans was empty, another was half empty. I don't know if this is a fault of shipping, QA, or the seller. Please be aware there was no refund policy when I purchased it.