L-cysteine is used therapeutically and nutritionally to improve the health of humans. It’s a basic building block of glutathione, and also valued for its ability to break up mucus, thereby making it easier to cough up phlegm that’s caused by respiratory and pulmonary conditions.
1.Has antioxidant properties
3.Increases male fertility
4.Balances blood sugar levels
5.Support digestive health
6.Relieves symptoms of respiratory conditions
7.Helps treat psychiatric disorders
Many high-protein foods contain L-cysteine, although usually in small amounts. These foods include:chicken, turkey, duck, pork, yogurt, cheese, eggs, sunflower seeds, etc .