L-cysteine is an amino acid that occurs naturally in the human body. It is one of the components in amino acids that are responsible for the building blocks of the powerful antioxidant glutathione.
L-cysteine can be found in protein-rich food, such as beef, chicken, tuna, eggs, yogurt, and oatmeal.
L-cysteine is used as a supplement to treat flu, inflammatory diseases. helps diabetics to manage their illness and osteoarthritis.
