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Doctor insights on: Hydrogen Peroxide Cold Sores

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Dr. Heidi Fowler
1,048 Doctors shared insights

Cold Sore (Definition)

Also referred to as fever blisters, cold sores are small, painful fluid-filled blisters that are usually found around the lips. Cold sores are very contagious and can be spread by mouth to mouth contact and can spread to the genitalia and cause genital ...Read more


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Was told a couple drops of 3% hydrogen peroxide will cure a cold, is this true?

Was told a couple drops of 3% hydrogen peroxide will cure a cold, is this true?

No: This will not work. The only way to get rid of a cold is let your body get rid of the virus that causes it. Medications treat only your body's response to the virus. Read more

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Why is there no medical consensus on the benefits of rinsing with 3% hydrogen peroxide? Is it effective for small sores and infections or not?

Why is there no medical consensus on the benefits of rinsing with 3% hydrogen peroxide? Is it effective for small sores and infections or not?

An old folk remedy: This is an old folk remedy. I doubt there has ever been any research on it, therefore no consensus. My guess is that rinsing with peroxide has no benefit for "small sores" or any kind of infection makes any difference for any Read more

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I heard a cold/sinus inf. Can be prevented or shortened by putting a bit hydrogen peroxide in ears. That dangerous? Effective? How should I apply it?

I heard a cold/sinus inf. Can be prevented or shortened by putting a bit hydrogen peroxide in ears. That dangerous? Effective? How should I apply it?

No: Hydrogen peroxide in the ear canals may be effective for wax removal, however has nothing to do with a cold or sinus infection. The ear drum (tympanic membrane) separates the ear canal from the middle ear and eustachian tube, unless there is a hole in the ear drum. Remember, you can "spray the front window of the house with a hose, the people in the living room won't get wet." Read more

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What does hydrogen peroxide do for cuts?

What does hydrogen peroxide do for cuts?

Mild disinfectant: May be used in small quantities as a wound disinfectant. Mild soap and water irrigation just as effective for most minor wounds. Key is copious irrigation with water, i.E "the solution to pollution is dilution". Read more

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Is it ok / can someone gargle with hydrogen peroxide?

Is it ok / can someone gargle with hydrogen peroxide?

Mucosal damage: Can hurt the mucosa - to help you further if you are doing this for whitening teeth a better way is to rinse with orthophosphoric acid available as super phosphazyme by biotics cost $15 use 10-15 drops with water rinse then brush acid off with baking soda - will whiten teeth and eliminate odor. I do not like hydrogen peroxide for mouth or in fresh cuts - will cause more harm than good. Read more

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Is 3% hydrogen peroxide safe to use and how much should be used?

Is 3% hydrogen peroxide safe to use and how much should be used?

SAFE FOR SHORT TERM: It is safe for short term but if used over long term it can be damging to the teeth. Talk to your dentist and get a second opinion. Read more

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What are ways to remove or reduce hydrogen peroxide from the body?

What? And why?: I am not aware how you can measure hydrogen peroxide in human body or if there is an indication to reduce it or why and what kind of disease it can cause I am aware the they use it in the past to treat heavy metal poisoning can you clarify your question thank you for using health tap Read more

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Can hydrogen peroxide ruin enamel?

Can hydrogen peroxide ruin enamel?

Probably not...: Peroxide has been safely used in tooth bleaching products for many years. However, don't forget, hydrogen peroxide is very reactive and should only be used for very limited usage in the mouth. Daily application in the mouth is probably not a good idea. Read more

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Is it safe to use expired hydrogen peroxide?

Is it safe to use expired hydrogen peroxide?

Yes but...: Hydrogen peroxide h2o2 is comprised of h2o (water) and an unstable form of oxygen once its expired and the oxgen is removed you are left with water or weak peroxide. Read more

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Can I use hydrogen peroxide to treat my toothache?

Can I use hydrogen peroxide to treat my toothache?

NO: While diluted 3% hydrogen peroxide is sometimes used to treat or soothe gum problems, sores and cuts in your mouth, it will do nothing to help a toothache. In fact, it may make things worse. You need to see a dentist to determine the cause of your toothache and suggest appropriate treatment. Read more

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What adverse affects are there for taking food grade hydrogen peroxide?

What adverse affects are there for taking food grade hydrogen peroxide?

Not much: Not much, it is used to clean breast feeding implements, pumps, etc. I would think taking too much of anything is bad for you, but people use it to gargle with, then spit it out, but I'm sure still swallow some. Read more

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Can hydrogen peroxide help infections?

Can hydrogen peroxide help infections?

Hydrogen Peroxide: Hydrogen peroxide (H2O2) is not very good as an antiseptic. Cleaning injured skin with hydrogen peroxide may lead to tissue damage. Although hydrogen peroxide was often used in the past for wound care – that is not recommended. It may delay healing. Read more