MD, JD
Protocol's credentialed source
Dr. Thomas Levy — cardiologist & attorney, author
4×
Your bottle may be stronger than you think
12% food-grade H₂O₂ is 4× the 3% most protocols assume
0
FDA-approved uses for inhaled H₂O₂
not evaluated or approved for any respiratory indication
~$27
Starter consumables cost
2% Lugol's + 3% food-grade peroxide, lasts weeks
What This Actually Is
Before anything else: this page separates three things that get blurred together online. Read this part first.
#1 — A HOME HARM-REDUCTION PROTOCOL
Personal use
A dilute-solution home nebulizing routine some people use for cold/flu/respiratory symptoms — not an FDA-approved treatment, not a cure claim. It's a decision you make with your own doctor, not an institutional recommendation.
#2 — NEBULIZING ≠ DRINKING PEROXIDE
Different route
Ingesting hydrogen peroxide — especially high-strength "food grade" sold for internal use — is genuinely dangerous: gas embolism, GI injury, and an FDA warning on the books since 1996. This page is about a dilute solution breathed locally into the airway, not swallowed. Don't conflate them.
#3 — DILUTION IS THE ENTIRE SAFETY QUESTION
Get this right
Nearly every documented harm case traces back to using the solution too concentrated. If you take one thing from this page, take the recipe in the next section and follow it exactly.
⚠ The Dilution Math — Read This First
Most write-ups of this protocol assume you're starting from 3% food-grade hydrogen peroxide. A 12% food-grade bottle is 4× stronger. Using 12% at a "3% recipe" amount means quadrupling the dose by accident — this is the real hazard, not the diluted protocol itself.
🧮 Dilution Calculator — build the batch from YOUR bottle
Enter the peroxide strength you actually bought — the math changes with it. Running a "3% recipe" amount with a 12% bottle is 4× the intended dose. The target working solution is a dilute 0.1%, with a gentler 0.05% option for a first try.
1. Your hydrogen peroxide strength
3%
12%
%
2. Batch size (saline)
8 oz
16 oz
oz
3. Starting strength
Gentle · 0.05%
Standard · 0.1%
4. Your Lugol's iodine strength
2%
5%
Make the saline base first: non-iodized salt (canning/pickling or plain sea salt — not iodized table salt) into distilled water at 1 teaspoon per 16 oz = 0.9% saline; scale the salt with your batch size. Make it fresh, keep it covered and clean. Never use plain water as the base — with no salt it irritates the airway.
Then run it: fill the nebulizer cup from the finished batch (a few mL), add the iodine drops the calculator gives you, and nebulize 10–15 minutes through a mouthpiece or mask, up to 3–4×/day while symptomatic.
Start at the dilute end. Coughing, chest tightness, or burning means it's too strong — stop, dilute further next time, and clean the nebulizer cup between every use.
⚡ Single-Vial Quick Mix — right in the cup
No batch, no measuring saline. Just one pre-filled 0.9% saline unit-dose vial (2.5 mL) squeezed straight into the nebulizer cup, plus a drop or two of 3% peroxide. These drop counts assume a 3% bottle — the number changes completely with a stronger bottle (see the calculator above).
| Working strength | 3% peroxide to add | Lugol's 2% |
|---|---|---|
| 0.05%START HERE | 1 drop ≈ 0.04 mL | 1 drop |
| 0.1%Standard | 2 drops ≈ 0.08 mL | 1–2 drops |
Vial size matters: the drops above are for a 2.5 mL vial. Using a 5 mL vial (most Amazon saline)? Double it — 2 drops of 3% for 0.05% gentle, 3 drops for 0.1% standard. More saline needs proportionally more peroxide to hit the same strength.
- Twist open one 2.5 mL saline vial and squeeze it all into the clean nebulizer cup.
- Add 1 drop of 3% peroxide for your first sessions (0.05%). Move to 2 drops only once you know you tolerate it.
- Add 1 drop of 2% Lugol's iodine (optional; skip it if you're iodine-sensitive or thyroid-cautious).
- Nebulize 10–15 min through the mouthpiece or mask, up to 3–4×/day while symptomatic. Rinse the cup after every use.
⚠ One drop vs. two is a 2× dose swing at this scale — count carefully. Even 0.1% depressed airway cilia in lab tissue (PeerJ 2023), so the 1-drop / 0.05% start isn't just caution, it's the evidence. Keep this drop method to your 3% bottle only — the same drops from a 12% bottle would be 4× the dose.
Where the Evidence Actually StandsPubMed
Three different questions get asked about this protocol. They have three very different answers — don't let one answer stand in for the other two.
The Mechanism — What Lab Studies Actually ShowPubMed
Kills SARS-CoV-2 in solution
0.0015%
The IC50 (half-maximal inhibitory concentration) at which H₂O₂ rapidly inactivates SARS-CoV-2 and locks its spike protein in a non-infectious shape — far below the ~0.1% protocol dose. This is disinfection chemistry, not proof it clears an infection once nebulized into a live lung.
Broad-spectrum ROS mechanism
Bacteria + viruses + fungi
Reactive oxygen species (the same chemistry your own immune cells use) attack a wide range of microbial targets via oxidative damage — the plausible mechanism behind the protocol's premise.
Iodine's "non-irritating" ceiling
0.25%
The available-iodine concentration research treats as non-irritating to upper-airway tissue over repeat dosing in animal models — well above what a drop or two of Lugol's in a nebulizer cup delivers.
Inhaled iodine safety trial
16/16 no harm
A small Japanese trial had subjects inhale 1% povidone-iodine via jet nebulizer to clear pharyngeal bacteria — no adverse effects reported in any of 16 subjects.
What Human Data Actually ExistsPubMedT4 · Case series
| Source | What it is | Scale | Result |
|---|---|---|---|
| Nano-ozonized H₂O₂ nebulization RCT (India, 2022) | Randomized, double-blind, placebo-controlled. 1 mL ozonized 3% H₂O₂ in 4 mL saline, nebulized 3×/day × 5 days vs. saline-only placebo, in moderately ill hospitalized COVID patients | Single tertiary-care center (arm sizes not stated in the published abstract) | Significantly better on oxygen requirement, symptom resolution (dyspnea, cough, fever) and days to RT-PCR negative — p ≤ 0.001. Mortality not significant (OR 0.29, 95% CI 0.02–3.14, p=0.31) |
| Brownstein clinic consecutive case series (US, 2020) | Uncontrolled, retrospective; nebulized H₂O₂ + iodine as part of a multi-part protocol (also oral A/C/D + iodine, IV H₂O₂/vitamin C, IM ozone) — nebulized peroxide+iodine used by 85% of the cohort | 107 consecutive patients | All 107 survived; no hospital deaths reported. No control group, and the peroxide can't be separated from the rest of the protocol |
| Cervantes-Trejo & Castaneda case series (Mexico, 2021) | Uncontrolled; 0.2% H₂O₂ nebulized 5–15 min every 4–8 h (74% of patients), plus oral 0.06% solution | 23 patients (8 months–70 years) | First improvement ~2.5 days, "mostly better" ~6.2 days; 2 hospitalized, 0 deaths. Authors themselves called for RCTs |
| Di Domênico et al. (Brazil, 2021) | Randomized double-blind placebo-controlled — but gargle (1%) + nasal spray (0.5%), NOT nebulized/inhaled | 35 analyzed (18 vs 17) | No benefit on hospital stay (p=0.65) or symptoms. Does not test the inhaled route — different delivery, different question |
| Japanese PVP-I inhalation trial | Tolerability of 1% povidone-iodine via jet nebulizer | 16 | No adverse effects |
| Manfra, Sharma & Kilburn (Cureus 2023) | Case report: 82-year-old nebulized H₂O₂ mixed far too concentrated (~1:2–1:3 with water) in a CPAP humidifier for a week | 1 | Acute chemical pneumonitis; needed high-flow O₂ + steroids to recover |
| Francis, respiratory cilia study (PeerJ 2023) | Ex vivo airway tissue exposed to 0.1%–1% H₂O₂ | Lab tissue model | 0.1% (the protocol's own concentration) immediately depressed ciliary motility; ≥0.5% caused non-recovering cessation |
Reality check — corrected July 2026: an earlier version of this page said "zero placebo-controlled trials exist." That was wrong, and it's worth saying plainly why it's an easy error to make. A randomized, double-blind, placebo-controlled trial of nebulized (ozonized) hydrogen peroxide does exist — India, 2022 — and it hit p ≤ 0.001 on oxygen requirement, symptom resolution, and time to RT-PCR negative. It is not indexed in PubMed, it ran at a single center, it never reported its arm sizes, and it was published in an obstetrics-and-gynaecology journal. So it is easy to miss and easy to dismiss — but it is a real randomized trial with a real placebo arm and a strongly positive result, and "no evidence exists" was never an accurate description of this literature.
What's honest: the inhaled route has one positive RCT, two uncontrolled case series with good outcomes, and lab evidence that the working concentration measurably slows airway cilia. The Brazilian null trial is real but tested gargling and nasal spray, not inhalation — it does not answer this question. What's missing is the large multi-center replication that would settle it, and the reason that trial doesn't exist is a funding story, not a scientific verdict (see below).
What's honest: the inhaled route has one positive RCT, two uncontrolled case series with good outcomes, and lab evidence that the working concentration measurably slows airway cilia. The Brazilian null trial is real but tested gargling and nasal spray, not inhalation — it does not answer this question. What's missing is the large multi-center replication that would settle it, and the reason that trial doesn't exist is a funding story, not a scientific verdict (see below).
The Doctors Who Actually Used It — and What Happened to ThemPrimary documents
During COVID, licensed physicians used this protocol on real patients and reported their outcomes. Several were formally punished for saying so. Below is what each one actually reported, and the primary regulatory documents — not somebody's characterization of them. Read both halves.
Dr. David Brownstein, MD — family physician, West Bloomfield MI
107 / 107
Published a consecutive case series of 107 COVID patients in Science, Public Health Policy and the Law (July 2020): "A Novel Approach to Treating COVID-19 Using Nutritional and Oxidative Therapies." All 107 survived. 85% used nebulized H₂O₂ + iodine. The honest catch: it was a multi-part protocol — oral vitamins A/C/D + iodine, IV hydrogen peroxide and vitamin C, IM ozone — so you cannot isolate the peroxide's contribution, and there was no control group.
Dr. Thomas E. Levy, MD, JD — board-certified cardiologist
Admonished
Wrote Rapid Virus Recovery (2021) promoting peroxide nebulization. On January 24, 2022 the Colorado Medical Board issued a formal letter of admonition (License DR-30761, Case 2021-7592) finding unprofessional conduct under C.R.S. §12-240-121(1)(j). The board's own stated grounds, verbatim: "you recommended treatments that lack demonstrated clinical efficacy against COVID-19 when other established and proven treatment modalities exist, and you cautioned against vaccinations."
Cervantes-Trejo & Castaneda, MD — Mexico
2.5 days
23-patient case series (Oxidants and Antioxidants in Medical Science, 2021), ages 8 months to 70 years. Nebulized 0.2% H₂O₂ every 4–8 hours in 74% of patients. Average time to first improvement 2.5 days; "mostly better" 6.2 days. Two hospitalized, zero deaths. The authors did not overclaim — they explicitly called for randomized trials.
The India RCT — the trial almost nobody cites
p ≤ 0.001
A prospective randomized double-blind placebo-controlled trial of nebulized ozonized H₂O₂ vs. saline placebo in moderately ill COVID patients (2022). Significant benefit on oxygen requirement, dyspnea, cough, fever, and days to RT-PCR negative. Mortality was not significant (OR 0.29, 95% CI 0.02–3.14) — the trial was too small to answer that. Single center; arm sizes never published.
Follow the money — and the statute. Hydrogen peroxide costs about $0.15 a session and cannot be patented. Nobody can earn back a $30–100 million multi-center Phase 3 on it, so nobody has run one. That is a funding explanation for the missing evidence, not a scientific one — "no large trial exists" and "it was tested and failed" are completely different statements, and they get deliberately blurred.
On the vaccine-authorization question, here is the precise version — the accurate one is more defensible than the loose one. Emergency Use Authorization is governed by 21 U.S.C. §360bbb-3, and criterion (c)(3) requires the Secretary to conclude there is "no adequate, approved, and available alternative" to the product. Note the word approved: an unapproved, off-label therapy like nebulized peroxide would not by itself have legally blocked an EUA. What the statute does create is a real structural incentive — a regulatory framework in which finding an early treatment "adequate" works against the authorization pathway everything was riding on. You do not need a conspiracy for incentives like that to shape which questions get funded, studied, and taken seriously. The Levy admonition listing "you cautioned against vaccinations" as part of the misconduct finding is on the public record.
On the vaccine-authorization question, here is the precise version — the accurate one is more defensible than the loose one. Emergency Use Authorization is governed by 21 U.S.C. §360bbb-3, and criterion (c)(3) requires the Secretary to conclude there is "no adequate, approved, and available alternative" to the product. Note the word approved: an unapproved, off-label therapy like nebulized peroxide would not by itself have legally blocked an EUA. What the statute does create is a real structural incentive — a regulatory framework in which finding an early treatment "adequate" works against the authorization pathway everything was riding on. You do not need a conspiracy for incentives like that to shape which questions get funded, studied, and taken seriously. The Levy admonition listing "you cautioned against vaccinations" as part of the misconduct finding is on the public record.
The other half, stated just as plainly: a 100% survival rate in 107 self-selected outpatients is not the same claim as "cures COVID" — most COVID outpatients survived without any treatment, which is exactly why the control group matters. The strongest lab finding against the protocol is its own working concentration: 0.1% H₂O₂ immediately depressed ciliary motility in airway tissue (PMID 36874974), and cilia are how your lungs clear infection. One documented case of a man who mixed it far too strong ended in chemical pneumonitis requiring high-flow oxygen and steroids. Suppression being real does not make a treatment effective — those are two separate questions, and this page refuses to let either one answer the other.
Watch the Physicians ThemselvesVerified links
Every link below was checked live in July 2026 and resolves. Note what this list demonstrates on its own: the credentialed physicians' original presentations of this protocol are largely no longer on YouTube, while the segments debunking them remain up. That is not an inference — it is what a direct search of the platform returns.
MD
Dr. Terry Grossman, MD — "Nebulized Dilute Hydrogen Peroxide"
A practicing physician (University of Florida School of Medicine, 1979; 15 years as a Colorado family doctor; founder, Grossman Wellness Center, Denver) demonstrating the dilute protocol. Still up on YouTube.
Dr. Joseph Mercola — nebulizer explanation (extract)
A short fair-use extract from a longer podcast, explaining the rationale and method. Mercola is an osteopathic physician (DO) and a commercial seller of health products — a real financial interest, disclosed here so you can weight it yourself.
Brownstein / Mercola full interview — off-platform
The original long-form interview in which Brownstein walks through his 107-patient results. It no longer lives on YouTube; the surviving copies are on alternative platforms. Its absence there is part of the story.
Counterpoint
CBS Colorado — "Dr. Thomas Levy Disciplined"
The mainstream coverage of Levy's admonition. Included deliberately: read it next to the board's actual letter above and judge for yourself whether the coverage characterizes the document accurately.
A note on who we left off: the single most-viewed nebulizing demonstration on YouTube (223K views) comes from a channel whose author states he is "a practicing doctor" but whose actual credentials we could not independently verify. We left it off rather than lend it a white coat it may not be entitled to. Reach is not credibility — that cuts in every direction, including toward people we agree with.
Cost vs. the AlternativesMarket data
Cheapest
DIY saline batch (per session)
~$0.15
homemade saline + a few drops of stock
Consumables bundle
~$27
2% Lugol's + 3% food-grade H₂O₂, lasts weeks
Product prices below
Where to Get the Supplies — Example ProductsT5 · Commercial vendor
Product-page-verified data (2026-07-16) — prices/ratings will drift over time, treat these as examples, not a permanent price guarantee. No compensation is received for these links; they're just real, live product pages.
Pick
J.CROW'S Lugol's Iodine 2%, 2 oz
$17.95
Cleanest for nebulizing — iodine + potassium iodide + distilled water, no glycerin. Most-reviewed Lugol's on Amazon. #2 seller in category.
Earth Harmony Organic Lugol's 2%, 2 oz
$19.95
USDA Organic; #1 seller in category. Contains vegetable glycerin — fine for oral use, an extra excipient if you're inhaling it.
Pick
Viva Doria 3% Food Grade H₂O₂, 16 oz
$8.99
Highest-rated of the picks, cheapest, food-grade with no stabilizers. Amazon's Choice. The 3% strength most protocol write-ups assume — no re-math needed.
Essential Oxygen 3% Food Grade H₂O₂, 16 oz
$10.68
Most-proven brand by review volume; sold by Amazon direct. Amazon's Choice.
US+ 3% Food Grade H₂O₂, 32 oz
$9.99
Best value by volume — a full quart at about $0.31/oz.
Pick
Deershy 0.9% Sodium Chloride Saline, 5 mL × 30
$19.99
Preservative-free — purified water + sodium chloride only, no preservatives, fragrance, or additives. That's the composition spec that matters for nebulizing, and it's isotonic 0.9% USP. Note: the Amazon listing markets it "for external use / daily nasal & skin care" (common legal-cover wording on imported saline) — it's the ingredients, not the marketing copy, that make it nebulizer-suitable. 5 mL vials — use the 5 mL drop counts in the quick-mix card.
BASE LABORATORIES 0.9% Saline Vials, 5 mL × 25
$12.99
Cheaper ready-made alternative — sterile 0.9% saline in twist-open unit-dose vials, general-purpose label, no "external use only" warning, reviewers report nebulizer use. 5 mL vials.
RAELIS 0.9% Saline Solution, 5 mL × 30
$13.99
Amazon's Choice; same profile as the pick — sterile 0.9% saline in unit-dose vials, general-purpose label, reviewers report nebulizer use. 30 vials per box.
Recommended pair: J.CROW'S Lugol's 2% + Viva Doria (or Essential Oxygen) 3% food-grade peroxide. If you already own 12% food-grade peroxide instead of 3%, re-read the dilution box above before you touch a bottle.
On the ready-made saline: a true hospital-grade "Sodium Chloride Inhalation Solution USP" in 2.5 mL unit-dose vials (the kind pharmacies dispense) generally isn't sold on Amazon retail — it lives at medical suppliers like Vitality Medical or McKesson. The Amazon vials above are general-purpose sterile 0.9% saline that people commonly nebulize; they work, but if you specifically want a product FDA-labeled for inhalation, buy it from a medical-supply vendor or pharmacy. You can also just make the saline base yourself (see the recipe up top) for pennies.
Typical Community ProtocolT4 · Community
Standard (Brownstein ultra-dilute)
~0.1% H₂O₂ + 1–2 drops Lugol's
¾ tsp 12% H₂O₂ per 16 oz saline; 10–15 min; up to 3–4×/day when symptomatic. See dilution box above.
Single-dose (ready-made vial)
1 saline vial + 1–2 drops 3% H₂O₂
The no-batch version: empty one pre-filled 2.5 mL sterile 0.9% saline unit-dose vial straight into the nebulizer cup, add 1 drop of 3% peroxide (0.05% gentle start) or 2 drops (0.1% standard), plus 1 drop of 2% Lugol's. Same working strengths as Standard above, measured per session instead of per 16 oz batch — full steps in the Single-Vial Quick Mix card near the top. Drop counts assume a 3% bottle.
Levy variant (higher tolerance)
Up to 3% H₂O₂, titrated — see the warning below before reading this as a dose
Levy describes tolerance-based dosing up to 3% depending on how sick the patient already is and their reaction — start lower and work up, never the reverse.
Maintenance / prevention
Once or twice daily
Community write-ups describe a lighter once-or-twice-daily routine when well, versus the higher-frequency acute-illness dosing above.
Critical caveat
No FDA-set dose exists
This is a community-derived, not clinically-trialed, dosing range. Asthma/reactive airway disease = extra caution and a doctor conversation first. Stop immediately on coughing, burning, or chest tightness.
Sources: DrJockers.com protocol write-up · Brownstein protocol (via Steven Yager) · Levy, Rapid Virus Recovery
Regulatory PositionT1 · Regulatory
FDA
No approval, any route
The FDA has never evaluated or approved nebulized/inhaled hydrogen peroxide for any medical condition. Separately, since 1996 the agency has warned against high-strength ("food grade") peroxide for internal/medicinal use — a warning about swallowing it, not the diluted-and-nebulized route this page describes, but relevant background on the agency's stance toward the compound generally.
EPA
Registered — for surfaces
Hydrogen peroxide is an EPA-registered disinfectant active ingredient for environmental/surface use (List N and general disinfectant registrations) — a completely different regulatory lane than an FDA drug approval for breathing it.
AAFA (patient advocacy nonprofit — not a government regulator)
Publicly warned against it
The Asthma and Allergy Foundation of America issued a 2020 public warning against nebulizing hydrogen peroxide, citing corrosive/mucosal-damage risk and lack of supporting evidence. Worth naming honestly: an advocacy group's position, not a federal action.
PubMed vs. the Doctors — and Real-World UseNamed clinicians
Two credentialed doctors built and popularized this protocol. A third credentialed doctor has publicly argued against it. All three are named, all three are on the record — weigh them yourself.
Dr. Thomas E. Levy MD, JD · board-certified cardiologist, author
Created/popularized nebulized H₂O₂ + iodine + vitamin C as a home "bio-oxidative" approach to viral respiratory illness in Rapid Virus Recovery, his 13th book. Recommends dosing up to 3% H₂O₂ depending on the patient's tolerance and how sick they already are. His mechanistic claim — that peroxide disrupts virus at the site of infection — lines up with the in-solution lab data above (IC50 0.0015% against SARS-CoV-2); it does not by itself prove the nebulized-into-a-live-lung step works the same way, and only the single India 2022 trial has tested anything like that step. → Rapid Virus Recovery (official free ebook)
Dr. David Brownstein MD · family medicine, Michigan; iodine researcher/author
Developed the ultra-dilute (~0.1%) variant used as this page's standard recipe, and reported an uncontrolled retrospective case series of roughly 107 patients from his own practice with no deaths in that series. He has zero financial stake in whether you buy a $9 bottle of peroxide — worth weighing against the incentives on either side. His data is real-world clinical experience, honestly labeled: not peer-reviewed, not controlled, not published in a clinical journal. → Brownstein protocol write-up
Dr. David Gorski MD, PhD, FACS · surgical oncologist, Wayne State University
Publicly critiqued the Brownstein protocol: argues the supporting case series lacks randomization, blinding, or peer review; that lab-scale disinfection potency doesn't automatically translate to safe lung therapy; and that nebulized peroxide is corrosive enough to risk irritating already-compromised airways. This is a substantive, named critique — not a vague "unproven" dismissal — and it's echoed by the independent ciliary-impairment data above, so it's shown here at full weight, not buried. → Science-Based Medicine critique
Real-world use: this protocol circulates widely in home-health and alternative-medicine communities, especially since 2020, with people reporting relief from cold/flu/sinus symptoms alongside a smaller number reporting irritation or no effect. An independent inquiry into user reports found a genuine mix of both — clearly labeled here as lived experience, not data, but real signal for a protocol the establishment has never funded a trial on. → Health Rising — Harm or Help? An Inquiry
Side Effects & Who Should Be CarefulReal risk — read this
This is a real, concentration-dependent risk — not manufactured fear, and not buried either. Match your caution to what the data below actually shows.
Even the protocol's own dose has an effect
Immediate
Ex vivo airway-tissue studies found that 0.1% H₂O₂ — the exact concentration the Brownstein batch recipe produces — caused immediate depression of ciliary motility, with partial recovery around 30 minutes. At ≥0.5%, motility stopped completely with no recovery by 2 hours; at 1%, roughly 35% of ciliated cells died within 2 hours.
Take it too concentrated →
Chemical pneumonitis
A documented case: an 82-year-old man mixed peroxide with water at roughly a 1:2–1:3 ratio (far stronger than this protocol, and in a CPAP humidifier, not a nebulizer, over a full week). He developed acute chemical pneumonitis, his oxygen saturation dropped to 81%, and he needed high-flow oxygen plus steroids to recover.
Who should be extra careful
Ask first
Asthma or reactive airway disease, COPD, anyone already short of breath or with low oxygen, young children, and pregnancy/nursing (unstudied for this specific use) — talk to a doctor before trying this. And never drink peroxide — that's a separate, more dangerous practice this page does not endorse.
The whole protocol's safety hinges on the dilution. A 12% bottle is 4× a 3% bottle — measure exactly, use the locked recipe above, start at the most dilute end, and stop immediately at any coughing, burning, or chest tightness.
Get the Book This Protocol Comes From
Rapid Virus Recovery — Dr. Thomas E. Levy, MD, JD
Levy gives his 13th book away free to read on his own site (email required to receive the download link — that's his gate, not ours). We link directly to his official page rather than hosting the file ourselves: he offers it free to read, which isn't the same as a license to redistribute the PDF, so we don't mirror it.
The Bottom Line — In Plain English
What it is: a home protocol — dilute food-grade hydrogen peroxide plus a drop of Lugol's iodine in homemade saline, breathed through a nebulizer for 10-15 minutes — built and popularized by a credentialed cardiologist (Dr. Thomas Levy) and adapted by another physician (Dr. David Brownstein) into an ultra-dilute variant. It is not FDA-approved, and it is not a cure claim.
Who's using it: people managing cold/flu/sinus/respiratory symptoms at home, largely word-of-mouth since 2020. Reports are mixed — mostly relief, some irritation, some no effect — and that honest mix is the real signal available, since no funded clinical trial exists to settle it either way.
What the law/regulators say: the FDA has never evaluated inhaled hydrogen peroxide for any condition. The EPA registers the same molecule as a surface disinfectant — a different question entirely. A patient-advocacy nonprofit (AAFA, not a government body) publicly warned against it in 2020.
What the research shows: strong lab evidence that dilute peroxide disables viruses and microbes in solution; one controlled human trial of nebulizing it into a sick person's lungs (India, 2022) and no replication; and real, concentration-linked harm documented both in ex vivo airway-tissue studies (at the protocol's own 0.1% dose) and in at least one severe real-world case caused by using it far too concentrated.
- The dilution math is the whole safety story: a 12% bottle is 4× a 3% bottle — measure exactly.
- Nebulizing dilute peroxide locally is a different question from drinking it — drinking it is dangerous and this page does not endorse that.
- One placebo-controlled human trial exists for this specific use (India, 2022) and it has never been replicated — the honest label is still "unproven," not "proven" and not "debunked."
- Even the protocol's own working concentration measurably affects airway cilia in lab studies — a real, named risk, not hidden.
- Start dilute, stop at any coughing or chest tightness, and talk to your doctor first — especially with asthma or reactive airway disease.
- This page is not medical advice. It's what the protocol is, what it costs, and what's actually known — you and your doctor decide.