Research Highlights the Role of Lysozyme in Supporting Oral Defense Mechanisms

A recent scientific study published in Clinical and Translational Medicine highlights the biological importance of lysozyme, a naturally occurring antimicrobial enzyme that plays a central role in the body's innate immune defense system. Lysozyme is naturally present in saliva and other bodily secretions, where it helps protect tissues from microbial challenges. The researchers explain that lysozyme works by breaking down bacterial cell walls, particularly those of gram-positive bacteria. By disrupting bacterial structure, lysozyme helps limit microbial growth and contributes to maintaining a balanced microbiome in environments that are constantly exposed to microorganisms.

Lysozyme is a naturally occurring enzyme present in human saliva and other body fluids, where it serves as an important component of the oral cavity’s natural defense system. This enzyme helps protect oral tissues by breaking down the cell walls of certain bacteria, particularly gram-positive microorganisms that can contribute to microbial imbalance. By limiting bacterial growth, lysozyme supports the maintenance of a balanced oral microbiome, which is essential for healthy gums, teeth, and oral tissues. In addition to its antimicrobial activity, lysozyme also contributes to protecting epithelial tissues and supporting natural immune responses within the oral environment. For this reason, lysozyme has attracted growing attention in oral care research as a natural ingredient that may help support oral hygiene and microbial balance.

The study further emphasizes that lysozyme contributes to immune protection and epithelial barrier stability, helping maintain healthy tissues and supporting the body’s natural defenses against microbial imbalance and inflammation.

Within the oral cavity, lysozyme is considered one of the key protective enzymes found in saliva. Supporting these natural defense mechanisms is important for maintaining oral hygiene, managing microbial balance, and protecting sensitive oral tissues. As a result, natural antimicrobial ingredients such as lysozyme are increasingly being explored in oral care formulations designed to support oral health and tissue recovery.

Recognizing the value of this natural enzyme early on, H2Ocean incorporated lysozyme into its oral care formulations beginning in 2001, combining it with mineral rich Red Sea salt and xylitol to develop products designed to support oral hygiene while working in harmony with the body's natural defense mechanisms. 

Reference: Wang L, Dong Q, He F, Gu Z, Sun A. Beyond bacterial defences: the role of lysozyme in cancer. Clin Transl Med. 2026;16:e70575.