Positives

• A Long COVID patient reported improvements in their immune function after incorporating hydrogen peroxide IV therapy alongside fasting and supplements, contributing to their overall recovery Reddit.
  
  

Negatives

• Hydrogen peroxide IV therapy lacks high-quality clinical evidence in Long COVID specifically, and patients pursuing it often combine it with multiple other interventions, making it hard to attribute improvements to the IV therapy alone NCI.
  
  

Hurdles & Side Effects

• Memorial Sloan Kettering reports the FDA has warned consumers against high-strength hydrogen peroxide products for medicinal use because they can cause serious harm or death, and the FDA has not approved IV hydrogen peroxide for any indication. Memorial Sloan Kettering.
• A Science Feedback review concluded IV hydrogen peroxide has no known medical benefit and that injecting it can produce gas embolisms because the peroxide breaks down to oxygen in the bloodstream, with documented cases of fatal cardiopulmonary failure following infusion. Science.
• Patients given IV hydrogen peroxide as adjunctive COVID-19 therapy commonly see no symptom relief, and report transient adverse effects, undermining the basis for using it in the post-acute Long COVID setting. PMC.