This page describes pharmacological agents that may have legal restrictions, side effects, and drug interactions in your jurisdiction. Information is for educational research only — consult a clinician before considering any compound.
Hydrogen Peroxide
The standard active ingredient for cosmetic teeth whitening (3-10% in OTC products, 15-40% in dental office).
Aliases (6)
Overview
What is Hydrogen Peroxide?
Hydrogen peroxide (H2O2) is a simple inorganic compound and reactive oxygen species. In low concentrations it is used as a topical antiseptic, mouthwash, and inhalation/nebulization protocol in some alt-health circles.
Key Benefits
Surface antiseptic action against bacteria and fungi, mild oxidative debridement of wounds, oral hygiene rinse for plaque and gingivitis, and household disinfection. Inhaled or IV use is unproven and carries real risk.
Mechanism of Action
Decomposes to water and reactive oxygen, generating hydroxyl radicals that oxidize and damage microbial cell walls, lipids, proteins, and DNA. At physiologic levels it also acts as a redox signaling molecule via cysteine oxidation.
Research Indications
What it is
- Simplest peroxide (H₂O₂) — water with extra oxygen - Available concentrations: 3% (OTC drugstore), 6-10% (whitening strips/trays), 15-4…
How it works on teeth
1. H2O2 penetrates enamel through micro-pores and reaches dentin 2. Catalase enzymes + tissue contact decompose H2O2 → H2O + O2 + transie…
How it works as antiseptic
- Direct oxidative damage to bacterial membranes + DNA - Effective against most gram-positive and gram-negative bacteria - Effective agai…
Why ingestion is dangerous
- Gastric mucosa contact at 3-35% causes burns + tissue damage - Decomposition in stomach generates rapid gas evolution → can cause embol…
What to Expect
- Week 1Tolerability and dose-response.
- Week 2-4Early effect window.
- Week 4-8Peak benefit assessment.
- Week 8+Cycle decision point.
Side Effects & Safety 8
Side Effects
- 1Tooth sensitivity — universal during 14-day course; resolves within days post-completion
- 2Gum irritation / blanching if contact
- 3Cold sensitivity post-treatment
- 4Mild oral mucosa irritation
- 5Persistent dentin hypersensitivity beyond cycle (rare)
- 6Gum recession with repeated aggressive use
- 7Allergic reaction to peroxide gel formulation
- 8Sour/metallic taste during use
When to Stop
- Soft tissue burn (mucosa or gum)
- Tooth pulp damage with deep penetration of high-strength gel
- Hypersensitivity persistent
- 3% accidentally swallowed (small amount): GI upset, vomiting, mild burns
- 6% ingested: stomach burns, foam, severe vomiting, rare embolism
- 35% food-grade ingested: life-threatening — gastric perforation, oxygen embolism, potentially fatal
- Severe corneal damage potential — rinse copiously immediately, ophthalmology evaluation
- Stop if persistent gum bleeding or recession
- Stop if persistent tooth sensitivity beyond 2 weeks post-treatment
- Avoid combining with whitening over inflamed/restoration-heavy mouth without dental input
How was your experience with this compound?
Anonymous · one vote per session · results below at 5+ votes.
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