What is Lysine hydrochloride? L-lysine is an essential amino acid. Many people know that several amino acids are known as the “building blocks of protein” and are needed in order for a huge number of proper internal functions, including growth. L-Lysine Monohydrochloride is a Hydrochloride salt of l-lysine, it's a form of l-lysine, it's more stable than l-lysine. What food is high in lysine? Lysine , or L-Lysine , is an essential Amino Acids, the body cannot make it. You have to get Lysine from food, such as beans, cheese, yogurt, meat, milk, brewer's yeast, wheat germ, and other animal proteins. What’s the benefits of L lysine hydrochloride? l-Lysine hydrochloride is widely used as nutritional supplements in food and beverage to support immune system function due to its antibacterial and antiviral properties, to support workout recovery and muscle growth, improve energy metabolism, promote healthy cartilage and skin, and to alleviate anxiety and stress. This supplement may be combined with Vitamin C to improve resistance to the common cold. Source: premium ingredient co.,ltd