Lysine benefits and effects. Lysine is one of the essential amino acids that promote human development, strengthen immunity and improve central nervous function. Lysine is an essential alkaline amino acid. Lysine is the first limiting amino acid due to its low content in cereals and the fact that it is easily destroyed and deficient during processing. What are the effects of lysine and its functions? I. Improves intelligence, promotes growth, and enhances physical fitness. Second, improve appetite, improve malnutrition. Third, improve insomnia, improve memory. Fourth, to help produce antibodies, hormones, enzymes and improve immunity, enhance hematocrit. V. Help the absorption of calcium, treatment and prevention of osteoporosis. Sixth, reduce the level of triglycerides in the blood to prevent cardiovascular diseases.