Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Lactoperoxidase is an enzyme found in milk, saliva, and other secretions, known for its antimicrobial properties. Its main mechanism involves the catalysis of hydrogen peroxide and thiocyanate to produce hypothiocyanite, which has been shown to inactivate a wide range of microorganisms, including certain viruses. Scientific studies have demonstrated that lactoperoxidase can inhibit the replication of some respiratory viruses, such as influenza and parainfluenza, in laboratory settings. Additionally, the lactoperoxidase system is part of the innate immune defense in mucosal tissues, such as those lining the respiratory tract, providing a biological basis for its antiviral activity. Despite these promising mechanistic and laboratory findings, there is limited direct clinical evidence supporting the use of lactoperoxidase supplements or formulations for the treatment or prevention of common colds in humans. Most of the evidence comes from in vitro (test tube) or animal studies, and only a few small clinical trials have examined its effects in humans, often in the context of oral hygiene rather than respiratory infection. Thus, while there is some scientific rationale for its antiviral potential, especially at the mucosal surfaces, the overall strength of evidence for lactoperoxidase as an effective cold treatment in humans is currently weak and does not justify routine use for this purpose without further clinical research.

More about lactoperoxidase
More about Colds (antiviral)

Other ingredients used for Colds (antiviral)

Other health conditions supported by lactoperoxidase

Products containing lactoperoxidase