Hydrogen Peroxide
Health Benefits

Hydrogen Peroxide as a Natural Remedy: Benefits and Precautions

H2O2 and Medications

Posted by Dwayne (Gananoque, Canada) on 02/19/2011

I have a question about food grade hydrogen peroxide I have had a valve transplant and I am on blood thinners and blood pressure medication do you think it would be safe to take food grade hydrogen peroxide internaly thank you for your time

Replied by Monique
(Genk, Belgium)

I have the same question. I also take bloodthinners like Aspirin and I'm asking if it is safe to start the cure?

H2O2 and Medications
Posted by Jan (Nyc, Ny, Usa) on 02/18/2011

Please tell me whether a Nuvaring contraceptive is adversely affected by a 3% hydrogen peroxide douche. My daughter had been suffering from BV; I checked your site, suggested the hydrogen peroxide douche full strength for 3 minutes for one week. She followed it for the past two days, delighted that the smell and other symptoms are gone. She is going on Winter break to visit her LDR bf for a week. It suddenly struck me that she may have compromised the safety of her contraceptive method by following my advise. Before telling her anything, I called the company. They said to contact her OB/GYN doctor, who didn't know and recommended using an alternative method (condoms, etc. ). I have read that spermicide contains hydrogen peroxide, but don't know what strength, and if 3% is really damaging. I don't want to alarm her and create a problem for their quality time. Yet, if there is a strong chance that the hydrogen peroxide has killed the Nuvaring chemicals, then its best to tell her ASAP. Before doing so, I thought I better check with the pros on here. Thank you for any advice. PS... the Nuvaring is suppose to act like a birth control pill (throughout her system) yet its locally placed in the vagina like a diaphragm.

H2O2 and Medications
Posted by Vince (Etowah, Nc, Us) on 01/16/2010

Hydrogen Peroxide and Diabetes

I would like to know if I can start drinking a H2o2 solution with my diabetes meds. I'm on Metformin 1000 mg and Glipizide 10 mg and Onglyza 5 mg for type 2 diabetes and want to know if I should stop taking the pills during the H2o2 regimen.Thanks for the help

H2O2 and Mercury Fillings

Posted by Tracy (Charlotte, Nc, Usa) on 09/03/2009

Is H202 therapy safe for someone with multiple mercury fillings? I read elsewhere that it can cause further release of mercury vapors.

H2O2 and Sperm

Posted by Blrobbins (Smiths Lake, Nsw Australia) on 09/05/2010

Hi there, I just started Hydrogen Peroxide therapy and we are trying for a baby and I just realised I better find out and make sure it won't harm sperm in any way. I can't find much info. Are you guys aware of any potential harm to sperm and if I should stop the therapy. Any help would be appreciated. Thanks

H2O2 Nasal Spray

1 User Review
5 star (1) 

Posted by Marilyn (Kearney, NE) on 04/02/2024

If you are looking for a quick and easy way to inhale Food Grade Hydrogen Peroxide. I use the 3% in a nasal spray bottle, like the Inhalation Method, but up my nose instead. I didn't have any problems of burning, but in case you do go low and slow. This was quicker and easier for me than nebulizing or using the Neti pot. And I recommend adding MSM to your drinking water too. Read up MSM here on Earth Clinic, and Dr. Josh Axe has a nice article on it too.

H2O2 Side Effects

24 User Reviews
3 star (1) 
1 star (4) 

Posted by Diane (Avoca, PA) on 02/16/2023

Does anyone know if nebulizing H2O2 can cause “ mild patchy opacities” on a chest X-ray?

Replied by Rob

Lung opacities can indicate many conditions besides cancer. Many times they are benign (noncancerous). They may be due to infections, hemorrhages, a history of smoking, and even COVID-19. Lung opacities are common.

Replied by Art
2142 posts


Regarding your question of whether inhalation of hydrogen peroxide(HP) can cause opacities of the lungs, the answer is yes, HP inhalation can cause them as outlined in the following research paper link below. I know it is not a popular opinion on EC and I have not previously brought it up for that reason, but you specifically asked the question and HP is a potent oxidant and when inhaled, it can do damage and much more than just opacities as further described in this 2019 research link about case reports :


Here is a relevant quote :

' Chronic inhalation of hydrogen peroxide is described in case reports as causing interstitial lung disease with radiographic images demonstrating septal line thickening, honeycombing, and traction bronchiectasis with associated ground glass opacification. '

I think it is important not to use too strong of a percent of HP solution and not to do it for too long because of the potent oxidative potential of HP. In the case report described, the patient had only used the HP inhalation for about a week.



Thanks, Art for that contrary report on inhalation of hydrogen peroxide. Although I feel the hp inhaling I've been doing for about 2 weeks now, seems helping me - contributing I think to my starting to jog again, since at least the past 2 years, I think it prudent to not make errors of commission and will take my chances with other remedies without proven side effects, however slight.

2142 posts


I mentioned it only because the question was posted. I do feel HP has health benefits myself and I use it, but only at 1% to a max of 1.5% max and only for very short durations. If I think I need a longer duration for effective treatment of a lung condition I will consider colloidal silver and possibly nebulized grapefruit seed extract.

An EC community member had asked me a few months ago about his use of oral intake of HP. He had reported following a posted dose escalation schedule, but before he could ever reach the max dose over time he said he started feeling sick, which wasn't supposed to happen. I think he said he was losing energy. I suggested he stop the HP for awhile to see how he felt after a few days as he could always restart the HP again later. He wrote back a few days later and said he was feeling better and his energy had returned. I asked him why he started taking the oral HP and he said to feel better and I said if it is not doing what you are taking it for, why continue taking it? I think he decided to stop because he was feeling good after taking a break from HP.

I explained to him that one of the purported benefits of HP is increased oxygenation that is derived from the breakdown of the HP by an antioxidant in the body called catalase, that breaks down HP into one oxygen molecule and two water molecules, but if a person does not have enough catalase available in their system to neutralize the HP in a timely manner, the HP can start to cause damage as it is a very potent oxidant. I suggested that perhaps his catalase levels were lower and unable to breakdown the HP.

Many people in the EC community have reported significant benefit from HP, but I think it is important to know that concentration is important and there may be some risks, at least in some people as the case reports suggest.


H2O2 Side Effects
Posted by Cameron (Jacksonville, Florida) on 05/24/2015

Reading the posts here makes me think that hydrogen peroxide has lots of healthful benefits but should be taken with extra caution. Can you list down the conditions that will make hydrogen peroxide ineffective in treating ailments or cause side effects? I'm worried about the burns, the stomach pains, vomiting, etc. if hydrogen peroxide is not taken properly.

Replied by Timh
2063 posts

C: Yes, there are some conditions that can be aggravated by H2O2 therapy.

First up on beginning H2O2 is making sure the body is properly alkalized. Acidic conditions cause hypoxia and visa-versa, so always be sure to properly alkalize.

Here a list come-to-mind of conditions that have the potential for bad reaction (hydroxyl radicals etc): Heavy Metals are not removed or detoxed by Hydrogen Peroxide and can produce toxic free radicals if coming into contact, so always do proper H.M. cleanses prior to Oxygen therapy.

Another condition would be a fairly common one of Aldehyde poisoning as a byproduct of candida or fungal infections. I don't have a degree in biochemistry but this combination looks not good. Another but somewhat rare condition is Mallonic Acid poisoning as a byproduct of tapeworm disease, could be reactive to H2O2.

It seems plausible that H2O2 therapy could be used in small amounts long-term, otherwise it would be indicated in increasing amounts (up to 25 drops 3% 2x per day) in acute cases like infections or cancer.

There are also other products that provide additional oxygen delivery like MMS and CellFood. Ozone is superior to H2O2 in many respects but has several shortcomings like instability and difficult administration. Also, adding alkaline rich Sodium Chlorite drops to a beverage naturally increases oxygen within the body.

Replied by Cameron
(Jacksonville, Florida)

Thanks Timh! So HP cannot be used without first doing heavy metal cleanse and if one has acidic body? Is there a natural way of doing the heavy metal cleanse?

Replied by Timh
2063 posts

C: YAW. Depending on factors like age, exposure, dental fillings, etc. one would fall into a category of mild-moderate-severe. To be exact, a Hair Mineral Analysis should be performed.

Much more info here https://www.earthclinic.com/cures/detox-heavy-metals-side-effects.html

H2O2 Side Effects
Posted by Terry (New Zealand) on 03/15/2015

I cannot get past 5 drops per day twice a day any more and I feel violently ill. How long can I keep taking h2o2 this way and will 5 drops twice a day kill the mold in my lungs?

H2O2 Side Effects
Posted by Nefeli (Greece) on 08/28/2013

Hi,I need your advice. I accidentally bought h2o2 pharmaceutical grade 3.1%, instead of food grade.

I put a tea spoon of H2O2 into half glass of water, placed my toothbrush in it for 1 minute then poured a little water on the toothbrush and washed my teeth and tongue with it. Did not swallow it but I guess I swalled some of it naturally. Then I checked the label and got scared cause I got a very slight stomach upset.

The bottle contains H2O2 3,1% - water -Alcohol Denat- Etidronic Acid - Phosphoric Acid - Disodium edta - Phenacetin - Aloe Barbadensis Leaf Juice Powder.

Please tell me your opinion about it, how dangerous it is even though I might have swallowed not much.

Replied by Mmsg
(Somewhere, Europe)

Nefeli, I use that regular pharmacy stuff all the time for inhalation and tooth brushing - I do dilute it - it never posed a problem for me.

H2O2 Side Effects
Posted by Mike (New York, Ny) on 11/05/2012

I purchased FGHP and immediately began using it with the incorrect dosage. Like an idiot, I mistook a drop to mean one whole dropper. You can see where this is going. I did three whole droppers the first day and the physiological effects were perceptible that evening. My throat felt scratchy beneath the Adam's apple and I suffered from nausea. I repeated the incorrect dosage for a few more days until it was pointed out to me that a whole dropper is not a drop. A Eureka moment ensued. I ramped down to 3 drops, not droppers, and although the candida in my stomach was decimated (which was partly my initial intent taking FGHP) I experienced a general discomfort and have since ceased taking the product, figuring I would give the body some time to recover.

Now, almost a month later, my body quivers and anxiety has stricken my mind. There are times when my brain lapses momentarily. I suspect this is a result of the overdose and could use some clarification or confirmation and certainly some guidance. It was my mistake and no one's fault but my own (I was never good with details). Granted, there were extenuating circumstances which I can attribute to my recent anxiety (Hurricane Sandy's aftermath), however, I have not read anywhere what the consequences of taking too much FGHP are. I appreciate your help.

Replied by Timh
(Louisville, Ky, Usa)
2063 posts

Mike: Oxygen can be toxic as it could produce dangerous free radicals, and this can happen only in a body deficient in reduction enzymes like Superoxide Dismutase, Catalse. The dose you took is the maximum advised oral dose that is supposed to be reached gradually (as you noted as a mistake). H2O2 is also administered I.V. by some holistic doctors and therapist, so there is a good safety record here. This episode doesn't seem disastrous but there does seem to be a need for response. Eat Wheat Sprouts or take as supplement for a few days, and also do some relaxation therapy and you should be just fine.

Replied by Helpyourself
(Houston, Texas)

Hey, Mike - I think you're fine. Take a break, resume later in small doses. My son got a big dose once and refused to take it again. I have since got him to use it ( FGHP) and he's fine with it. I just make the dose now. Good Luck!

H2O2 Side Effects
Posted by Everett (Orlando, Fl Usa) on 06/30/2012

I started taking h2o2 4 mos ago. Started with 3 drops in 8 oz distilled water, and built up to 25 drops 2 x daily. I continue to take the 25 drops 2xdaily. I am 74 years old, 5' 10", 155 lbs, non smoker, work out every day, eat healthy, and on no prescription medication. I have fought cancer since '01 with diet, exercise, and rife machines, also had tuberculosis in '62 with moderate advanced case, hospitalized 4 months, was completely cured and no relapses.

Since taking HP for approx 4 months total, I have had painful boils, and cold and flu like symptoms, but the symptoms have escalated in the last 9 days. I have developed a deep cough, sore throat, very low energy almost like I have a virus or flu bug and can do very little work which I'm normally pretty high energy.

I do not throw up or have any intestinal discomfort. I have no fever, no sinus irritation. But a terrible nagging cough for 9 days. I purchased a Vicks Warm Mist humidifier yesterday to see if it will make me feel better, and stop the coughing, return my energy level.

Do I have a toxic build up? What would you suggest to get my energy back??


Replied by Timh
(Louisville, Ky, USA)
2063 posts

Everett, One would use H2O2 drops as a treatment phase but not long-term. Ideally you would want to slowly graduate from the H2O2 drops and begin using "antioxidants" (of which are many kinds) to insure protection for cells. Lots of good nutrition plus antioxidants would suffice any somewhat healthy person. Any of the many forms of detoxing are recommended on a routine basis to keep "clean" on the inside. Hope this helps.

Replied by Ali
(Swansea, Wales, Uk)

Yes, you have a toxic build-up - but it's not caused by the H202. The H202 is triggering detox of toxins your body has accumulated over the years.

It is best not to stop the H202, but maybe reduce it for a while just to let your body continue to detox. Having been reading through the whole area on HP, time after time people post that the HP made them sick.

We have been brainwashed into believing that anything that makes us feel rotten is an 'illness'. No, it's just the body's way of off-loading what it doesn't want. The body will use any outlet it can to detox - coughs (lungs), colds (sinus/throat/nose), rashes, sores, boils, spots, zits, eczema, psoriasis (skin), diarrhea (bowels), cystitis (bladder) conjunctivitis (eyes), and will often send the toxins out through the nearest or best available outlet.

Because our lifestyles often prevent our bodies from being able to detox properly - the first sniffle gets us running to the Doc for a 'suppression' tablet - the toxins are often driven deep into the body rather than out of it.

HP gets the cells working far better - and far more able to detox. If people were to read far more information before jumping in to this, they would then understand what to expect.

It will pass, and keeping on with the HP, even a lower dose, will help it to detox faster. Stopping the HP can often just prolong the detox.

H2O2 Side Effects
Posted by Evelyn (New York, Ny, Us) on 09/18/2011

We had been using food grade hydrogen peroxide in a humidifier for many months.

My nearsightedness has suddenly gotten worse for near distance, for example, signs in supermarkets. My boyfriends' eyes have gotten a lot worse in conditions of glare and haze, he had photosensitivity before but it has become a big problem.

We stopped using the hydrogen peroxide in the humidifier because that is the only new variable.

Does anyone know if hydrogen peroxide caused these problems? At no time did our eyes feel irritated or did I feel he was putting in too much. If damage was caused, what would reverse it?

Replied by Dud
(From The Woods Of, Wv, Usa)

Both of your symptoms indicate that the "lens" of your inner eyeballs could be getting clouded over by cataract-like distortions.... possibly due to the h2o2 free radical damage [?].

There is a protein-glycogen substace called acetyl-L-cysteine [spelling?] that is being used as eye drops to reverse cataracts. Improves about 75% of people who try it.

search it on a scroogle search.


Remedies Especially for Cataracts

*The use of carrots is considered beneficial in the treatment of cataract. Take plenty of raw carrots daily or else drink two glasses of fresh carrot juice, one each in the morning and evening.

*Eat two or three cloves of raw garlic daily to clean the crystalline lens of the eye. The cloves should be chewed slowly.

*Extract the juice of pumpkin flowers and apply externally on the eyelids twice daily to prevent further clouding of the crystalline lens.

*Mix an equal quantity of aniseed and coriander powder together with one teaspoon of brown sugar, and take the mixture in doses of 12 grams in the morning and evening.

*Place a few drops of raw organic honey in the eyes twice or more each day. This is an ancient Egyptian remedy which is reported to have benefitted many people with cataracts.

*Finely grind seven kernels of raw almonds together with half a gram of black pepper and place in a half cup of water. Sweeten with raw honey and drink the mixture to help the eyes regain vigor and clarity.

*Twice daily, close your eyes and bathe them with hot (but not scalding) water containing Epsom salts. In addition, take an Epsom salts bath at least twice a week. Remain in the bath from twenty-five to thirty-five minutes till you perspire freely. After the bath, cool off gradually.

When it comes to eye remedies, the best results may well come from combining one or more of the suggested remedies.


Alpha-lipoic acid (ALA) is a small organic molecule with a disultide bond. It is a superb antioxidant that is soluble in both water and fat. ALA is an important coenzyme for the production of acetyl coenzyme A. Dihydorlipoic acid (DHLA), it's reduced form, is an electron donor that recycles other fundamental antioxidants (vitamin C, vitamin E, and glutathione). ALA and DHJLA are superb free radical scavenger themselves because they neutralize peroxyle radicals [36], hydroxyl radicals [39] and singlet oxygen [38].

ALA is also a metal chelator that removes mercury from tissues [17], prevents calcium oxalate crystals (stones) from forming in the kidneys [21, chelates copper [28], and removes arsenic [18].

Lately, there has been a great explosion in ALA research. The lipoic acid/dihydrolipoic acid redox couple inhibits viral replication by stabilizing the NFK beta transcription factor [4], blocks the development of cataracts [24], protects the kidneys form aminoglycoside damage [35], insulates the pancreatic islet cells form inflammatory assault [7], inhibits thymocyte apoptosis [8], and stimulates the production of helper T cells [15]. In addition, the toxic side effects of cancer chemotherapy can be attenuated with the use of ALA [5] and it protects bone marrow from free radical damage secondary to ionizing radiation. [33].

Replied by Debbie
(Melbourne, Australia)

I would be very concerned about taking Alpha Lipoic Acid if as stated it chelates copper and iron. These are two very important minerals for the body. Copper as I understand it is one of the most important minerals.

H2O2 Side Effects
Posted by Julie (Columbia Falls, Mt) on 11/30/2010

Has anyone ever had red eyes from taking the dosage three time a day. I started getting red eyes when I hit six drops a day.

Replied by Nay
(Sacramento, Ca, Usa)

I just started taking H2O2 (35% FGHP). I am at 5 drops twice a day. I noticed red eyes yesterday, I am not sure if it is because of H2O2 or something else. In a few days, I am planning to go for 6-10 drops 3 times. I will update results.

Replied by Ali
(Swansea, Wales, Uk)

The HP has triggered detox in my eyes. Gobs of gloop and crusts in the morning. Fantastic. Better out than in! Red eyes is just detox. It should pass. Keep going.

H2O2 Side Effects
Posted by Sistertongue (Albuquerque, New Mexico, Usa) on 10/01/2010


Heavy metal interaction with H202 caution. I had been happily using h202 for several months, then started have concerning heart palpitations, though I was not linking this in any way to h202. I live in an area with high naturally-occurring arsenic in the water supply. A neighbor mentioned that most filters do not filter out arsenic and that I should be buying drinking water. This little tidbit caused me to look up arsenic poisoning - which fit my symptoms exactly: headaches, confusion, drowsiness and heart arrythmias. The latter is where the h202 caution comes in. I read that "arsenic in cells stimulates the production of h202. When h202 reacts with certain metals such as iron or manganese, it produces a highly reactive hydroxyl radical, " which can cause neurological imbalances and disruptions in the electrical-voltage complex of the heart, resulting in disruptive intervals in the QT (that's that lovely little bio-battery we all have that keeps our heart beating at regular intervals). I stopped taking h202 immediately and stopped drinking my water. I have begun a heavy metal detox (I am also having old mercury/silver fillings removed right now) and will complete this before I go back on the h202. I think it important that, if readers have been exposed to metals or other harmful toxins, they may want to consult with health care providers about h202 interactions before proceeding with its use.