L-Cystine is a non-essential amino acid formed by the oxidation of two molecules of L-cysteine, another important amino acid. It plays several vital roles in the body’s biochemistry and physiology. One of its key functions is its involvement in the formation of disulfide bonds, which are crucial for stabilizing the structure of many proteins. These bonds contribute to the overall integrity and function of proteins, ensuring proper cellular function and signaling. L-Cystine is also a potent antioxidant, helping to neutralize harmful free radicals and protect cells from oxidative damage. By scavenging free radicals, L-Cystine supports overall cellular health and may contribute to longevity and disease prevention. Additionally, L-Cystine plays a role in the synthesis of glutathione, a powerful antioxidant that helps detoxify harmful substances and protect against oxidative stress. Glutathione is essential for maintaining a healthy immune system and supporting the body’s natural defense mechanisms. Furthermore, L-Cystine is involved in the synthesis of taurine, another important amino acid with various physiological functions, including bile acid conjugation, osmoregulation, and antioxidant activity. Overall, L-Cystine is a versatile amino acid with diverse roles in cellular function, antioxidant defense, and overall health maintenance. Its presence is essential for maintaining optimal physiological function and supporting the body’s resilience against oxidative stress and disease.