How To Take Food Grade Hydrogen Peroxide Internally. At this concentration, however, hydrogen peroxide is a very strong oxidizer and if not diluted, it can be extremely dangerous or even fatal. There are many health benefits of food grade hydrogen peroxide and also uses for personal care compounds.
To help soothe the irritation those things cause, i use a hydrogen peroxide sinus rinse. It can cause irritation of the gastrointestinal tract with nausea, vomiting, and foaming at the mouth (the foam may obstruct the respiratory tract or result in pulmonary aspiration). Hydrogen peroxide should never be taken internally.
For a mouthwash, dilute 1% peroxide 50:50 with water.
Add 1 ounce of peroxide to a quart of distilled water. For a mouthwash, dilute 1% peroxide 50:50 with water. Do not use drug store hydrogen peroxide. It’s a really effective solution for flushing and soothing the sinuses.