Finally, some interests, although some of the responding gentlemen are on my Ignore, so there won't be a 2 way conversation, I know, my loss.
I personally would be uncomfortable in taking a oxidizer internally, even at 3%.x
Let's talk about toxicity, before we go any further. Basically ANYTHING can be toxic (as in deadly) if you apply enough quantity. Hell, in a radio contest a woman died of drinking too much water, her brain got swollen up. But let's bring up more obvious examples, where a small quantity is medicine, and big quantity is well, not so good:
1. Red wine. Moderate drinking makes you live longer, lots of it can kill you by alcohol poisoning.
2. Nitroglycerin. In a few mg it is medicine for your heart preventing an angina, in big quantities, well. boooom.
Now we have settled the toxicity issue, we can approach H2O2 in a friendlier manner.
Just because 6-8% can blonde your hair and 35% is heavy cleaning material and 98% is rocketfuel that doesn't mean that when it is diluted down to 3% or less, it can not be an effective helper of your health.
There are 3 ways to introduce it to the body:
1. Intraveinous. Let's forget about it, only should be done by a doctor and only when last resort.
2. Swallowing it in distilled water. The protocol is too complicated and requires an empty stomach 2 hours before and after drinking it with very questionable results.
but here comes Johnny:
3. Inhaling it.
There is a very fresh debunking Youtube video against drinking H2O2. Nevertheless it mentions that inhaling it actually does put it into your blood system, if that was the goal. There are people who have been inhaling it (even the household cheapo version with stabilizer in it) for years without any adverse effects, but with plenty of positive results.
Now what would be those positive results? Not getting sick, breathing easier, having more energy etc. Oh yeah, have I mentioned it cures cancer?
Anyhow, food for thought...
https://healthyasabirch.com/natural-therapies/how-to-cure-yourself-with-hydrogen-peroxide/