hydrogen peroxide: clinical use

Prescribing considerations

• Confirm the intended route and formulation because the cream and solution have different licensed uses.
• Restrict use to superficial areas. Do not introduce hydrogen peroxide into closed cavities or use it on deep or large wounds because oxygen generation can cause gas embolism.
• Reassess persistent or worsening infection and consider microbiological investigation or alternative treatment.
• Consider irritant excipients in the cream, including propylene glycol and salicylic acid.

Contraindications and cautions

• Hypersensitivity to hydrogen peroxide or formulation excipients
• Use in closed body cavities, surgical wounds, or deep or large wounds
• Application of the cream to healthy skin
• Use of the solution as an enema or to disinfect surgical instruments

Monitoring

• Assess local tolerability, including persistent burning, dermatitis, whitening or tissue injury.
• Review the diagnosis and clinical response if infection persists or worsens.
• After accidental ingestion, ocular exposure or use in a closed space, assess promptly for local injury and oxygen-related complications.

Clinical pharmacology

Hydrogen peroxide is an oxidising antiseptic. Catalase and peroxidases rapidly convert it to water and oxygen; local reactive oxygen species damage microbial lipids, proteins and nucleic acids. The lipid-stabilised cream prolonged local availability compared with an unstabilised aqueous preparation in in-vitro testing.

Formulation and product differences

• Crystacide is a lipid-stabilised cream licensed for susceptible superficial skin infections; it forms a washable dry film.
• The aqueous solution was licensed for mild skin disinfection and oral topical use as a mouthwash or gargle but is listed as discontinued.
• The cream contains propylene glycol and salicylic acid, which may irritate skin.
• Once opened, the cream has a limited in-use shelf life; follow package storage and discard instructions.

Cream

Route: Cutaneous

Strengths: 1%