A member asked:

What's the difference between usp and food grade for hydrogen peroxide?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Hydrogen peroxide: “Food grade” hydrogen peroxide (H2O2) contains 35% H2O2. It should not be taken internally (exception - may be highly diluted H2O2). USP hydrogen is usually 3%.

Answered 12/6/2018

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