That website scares me
I think there are a lot of natural things we can do for our bodies, but a lot of information out there is based on myths and not proven by science, and can be potentially dangerous - or worse!
Drinking hydrogen peroxide, even diluted "food grade" hydrogen peroxide, can cause ulcers in the stomach or intestines, or even death. I doubt there's a valid reason for drinking it. The American Cancer Society says Drinking food grade hydrogen peroxide can cause vomiting, severe burns of the throat and stomach, and even death. If it gets in the eyes, it can damage the corneas and cause blindness. Direct skin contact with food grade hydrogen peroxide can cause blistering or burns, and breathing its vapors can also be harmful.
What kind of healthcare person recommended this to you? Did you ask an M.D.?
I've never run across any information regarding vinegar to make me believe the claims are valid, either. Could it help? The websites that promote it often seem less than reliable, if you know what I mean. If you go to medical websites, however, you'll usually find statements to avoid it because there's a lack of science to back it up. Could it hurt? It probably depends on how much you ingest. It can eat the enamel off of your teeth if you drink it too often. It can also cause a lot of stomach problems, including diarrhea. The claims are that it helps adjust your body's pH level. From what I understand, though, any change is very minor and insignificant, and in order to make a difference, you'd have to drink very large amounts which would make you ill.
Harmful bacteria in the system is usually handled quite well by the body. If you have a problem with candidiasis or something else, you might want to ask your doctor (an M.D.) to prescribe something.
Dr. Weil, who is well known for going back to nature whenever possible, suggests changing your diet, such as cutting back on refined sugars, avoiding dairy, and eating a clove of garlic per day. He also indicates that this is not a problem to be concerned with and that it doesn't cause the problems described on some of those 'other' websites.
This article http://www.drweil.com/drw/u/id/QAA125503
In my personal opinion, maybe it isn't a good idea to try to tinker in this area. The only thing I want to worry about being too acidic is my salad dressing