Oxygen Plus

Price is high for the product that you get. However, it might we worth it when you really need it. For recreation, it's not cheap.

It did about what I expected. Didn't get the bounce I expected, but for some people it might be good.

They gave me free shipping, so I tried it. I really didn't get that much boost. To be fair, I just took 4 good breathes consecutively from the last cannister while wearing a pulse oximeter. Result: up from 98 to 99%. I am a life long distance runner so maybe I don't need it.

One of the bottles was empty. Nothing was coming out of it. That's all

No effect!