Betaine, also known as trimethylglycine, is a naturally occurring compound found in foods like beets, spinach, and whole grains. In oral care, betaine is gaining recognition for its ability to soothe dry mouth, reduce irritation, and support overall oral comfort.
One of betaine’s key benefits is its moisturizing effect. It acts as an osmoprotectant, helping cells maintain hydration under stress. This makes it particularly valuable for individuals with xerostomia, especially those sensitive to sodium lauryl sulfate (SLS) in toothpaste. A clinical study published in Acta Odontologica Scandinavica found that betaine‑containing toothpaste significantly relieved subjective symptoms of dry mouth, especially in patients with hyposalivation and Sjögren’s syndrome.
Betaine also appears to reduce irritation caused by harsh detergents in oral care products. By stabilizing cell membranes and reducing inflammation, it helps maintain a healthier oral environment. This is especially beneficial for patients who experience burning sensations or mucosal irritation from conventional toothpaste formulations.
Emerging research suggests that betaine may also help reduce oral inflammation. A 2025 randomized controlled trial found that a toothpaste containing betaine, olive oil, and xylitol reduced salivary inflammatory biomarkers in adults, indicating potential anti‑inflammatory benefits.
The combination of betaine and hyaluronic acid results in a product that retains moisture and soothes irritation long term.
Overall, betaine is a gentle yet effective ingredient that supports moisture, comfort, and oral tissue resilience. For individuals struggling with oral dryness or sensitivity to common toothpaste ingredients, betaine‑based products offer a scientifically supported alternative that promotes a healthier, more comfortable oral environment.
That’s part of the reason that betaine is a key ingredient in Murnia™. Delivering long-lasting, all-natural moisture that soothes the sensation of dryness in the mouth, while simultaneously supporting a neutral (and healing!) pH of 7. Developed through years of biomedical research with oncology patients, the goal of Murnia™ has been to provide all-natural, highly effective solutions for patients struggling with persistent oral dryness and/or wounds.
Learn more at: www.murnia.com