Recently this came into my hands. The person that bought it did so simply because it was the cheapest at the time in the store.
Here's the nonsense about "super-oxygenated water." It is a scam first and foremost. The atmosphere from which we draw oxygen through our lungs is only 21% oxygen. When we inhale and exhale, the difference in oxygen is 5%. Yes, a breath will contain approximately 21% oxygen when we inhale and our bodies will take 5% of that and exhale 16% oxygen.
Oxygen is necessary for bodily functions, but it is also toxic. The dose makes the poison. Oxygen is a highly reactive chemical and this is why our bodies only use so much and expel the rest (I know, it's an oversimplification of the process but I don't want to get too wordy). Now take in the idea that we also consume food rich in antioxidants to combat the problems caused by oxidative stress. So would adding extra oxygen be a good thing? Quacks are a weird bunch.
Now don't worry though, the extra amount in this water won't really cause you any harm. The reason is that some of the extra oxygen in the bottle will be released when you open it. The rest will go down to your stomach and intestines. While in your stomach, some of that extra oxygen will be burped out. The stomach and intestines are great at absorbing nutrients, but not so with oxygen. That's what we have lungs for. So any extra (what little there is left) might just come out...your other end.
So if you are a fish who has the organs to take oxygen from water, this product is for you. For the rest of us, if you want extra oxygen, just take an extra breath. It's free and thus lighter on your wallet.