Boost OxygenMedium Natural 5L Canister | Respiratory Support for Aerobic Recovery, Altitude, Performance & Health (4 Pack)

I purchased the Boost Oxygen Medium Natural 5L Canister 4-Pack mainly for post-workout recovery and high-altitude trips, and it's definitely made a difference. Each canister is lightweight and easy to use, with a simple push-button spray that delivers a quick shot of oxygen when I need it most.I’ve used it after intense cardio sessions and noticed quicker recovery and less fatigue. It’s also been a lifesaver during hikes at higher elevations—helped with breathing and kept headaches at bay. The natural, unscented option is a plus if you're sensitive to smells.The only downside is that the cans don’t last super long if you're using them frequently, but for a short-term boost, they do the job well. Definitely recommend keeping a can or two on hand for travel, training, or just general wellness.

So far, so good. I have just used some of one of the containers and works easily and seems to have quite a bit of air in the canister. I'm asthmatic and wanted to see how much it helped.

The idea behind Boost O2 is excellent. I have COPD haven’t reached the point where I need to carry oxygen. I do get out of breath when walking or strong exertion. I have used a few “puffs” and have noticed some relief.There is one thing I’d suggest. I have two German Shepherds. Shepherds are notorious shedders. I also live in a dirt road. Dust is a problem in our house, but we deal with it.I only gave 4 stars because the delivery system needs redesigned. There is nothing to cover it from dust and debris. I can imagine taking a deep breath someday without checking to be sure it’s clear of dirt and inhaling dust and dog hair.I’m using a sandwich bag held in place with a rubber band, but a competent engineer could improve this.BTW, I don’t taste or smell the extra stuff added for fragrances.I don’t have severe breathing problems, but I am 77 and get out of breath, especially walking up hills or moving fast. I’ll add to this review after I have used Boost Oxygen more and the warmer weather gets here.

These lightweight canisters are great and can be easily carried around. I keep one in my office at home and one in the car. If go shopping and do a lot of walking, these do improve my breathing functionality when I get short winded. I don't recommend them if you are in need of oxygen 100% of the time. Note: I do not, and they are not a replacement for my prescribed medium sized oxygen tanks which I still use at home. I highly recommend these canisters for their cost and value.

AMAZING!! I DID NOT BELEIVE IT UNTIL I TRIED IT. I CAN FEEL IN MY CHEST THE DIFFERENECE WHEN I TAKE A DEEP BREATH, I DO IT 3 TIMES AT A TIME THRUGHT OUT THE DAY, WHEN I FEEL I SHOULD. YOU REALLY NEED TO TRY IT TO UNDERSTAND WHAT I AM SAYING. I KEEP ONE IN MY CAR ALSO.

The product is helpful. The size is smaller than I thought it would be, so it is not a good value for the money. It is easy to use and the burst of the spray is controllable.

I'm a very big & tall guy (6' 9" & 220 lbs), & have spent the better part of 25+ years exercising (both wt. lifting & aerobics), all the while struggling with lung & O2 issues I've had since birth; meaning that no matter how much cardio I do, I will still fall short of those without this condition.I've used O2 tanks (the heavy / hospital variety) & have been on steroidal inhalers to help increase my O2 when exercising, & each of these methods have proven quite effective in maintaining my endurance along-side those who don't have this condition. This said, the prospect of an ultralight O2 delivery method was quite appealing (even over the inhaler). Alas, it's all smoke & mirrors.For those who swear by this product, I'd also like to mention that in hundreds of thousands of case studies, where a placebo was used, the placebo would occasionally perform just as well as the controlled product; e.g. "mind over matter". In my case, since I have a REAL O2 delivery system (e.g. the med-ox regulator), I can compare how it works to this product. Even when using a foam seal (made from pipe insulator) to help "seal" the rim of this product around my mouth, I feel no different than when I breathe without it. By contrast, after running for 30m< &/or huffing & puffing during &/or after an intense cardio workout, both my "O2 tank" & inhaler offer me near-instant O2 relief (with the O2 tank offering my more "satisfactory relief", faster; hence why this product seemed more appealing than my inhaler). Add to this that when I check my pulse oximeter after an intense workout & use my tank or inhaler, my O2 levels out (to normal) pretty fast. My O2 didn't increase OR level out with this product, but rather decreased (I think b/c it is NOT "pure oxygen", & by putting it on my face, thus restricting my high-volume breathing, actually decreased my uptake).In short, if this works for ya... great. But for those looking for a REAL O2 boost, I'd say stick to O2-restrictive masks (e.g. build your endurance the long & steady, but true, way); adjust your diet to accommodate better red blood cell creation &/or O2 uptake; look up breathing exercises; consider a small, light-weight (1< lb, 25 LPM) O2 tank, to use during or after an intense workout as "recovery O2"; &/or talk to your doc about how to boost your blood O2 (especially if you have O2 medical conditions; like me).The take away..............................?It's a nice concept, but ridiculously fails, as it is NOT "95% pure O2", like the manufacturer claims. In a nutshell, you are spending $10+ for a nice-looking, brushed aluminum can... filled with the same level of O2 you can get by stepping outside. For all intents & purposes, you could take a large garbage bag & "capture" the outside air & breathe from that while working out to get the same effect as breathing from this can (for my own "control test", I actually tried this, lol; & both my pulse oximeter & O2 gas detector reflected this result as well ~ just as other reviewers have stated / shown w/ pics).

Works really good.