L-Cysteine Powder is suggested to treat several diseases. It is required to cure emphysema, bronchitis and tuberculosis. This powder is also recommended for treating arthritis. It is basically amino acid that can be found in protein enriched food. Its smell resembles to garlic, It is hygroscopic and tastes sour. L-Cysteine Powder dissolves in ethanol and water. Its ph value ranges between 2.0 to 2.8. Its standard has been checked on the basis of its storage life, solubility, medicinal attributes and composition.