Pure® Encapsulations L-Lysine provides the amino acid lysine. Lysine is an essential amino acid, that is, it cannot be synthesized by the human body. It is a necessary nutrient for the synthesis of proteins, antibodies, as well as in the structural formation of collagen. Each capsule provides the biologically active L-isomer of the amino acid lysine. Indications: People who seek to increase the contribution of this amino acid to the body. How to use: 2 capsules between meals. Caution: Do not take during pregnancy or lactation or for prolonged periods. If you have any health problems or take any medication, please consult your healthcare professional before using this supplement. Conservation: Store in a cool, dry place.