MASON NATURAL L-Lysine 500 mg with Calcium - Improved Immune Function, Enhanced Nutrient Absorption, Essential Amino Acid, 100 Tablets

Est. 1967 May Support Immune Function Dietary Supplement Mason Guarantee - Laboratory Tested cGMP - Certified Good Manufacturing Practice Gluten Free Soy Free L-Lysine is an essential amino acid that is a necessary building block for all protein. It is needed for proper growth and bone development, Calcium absorption and maintains a proper nitrogen balance in adults. Many people use it as a common treatment for cold sores. Since it cannot be produced by the body, it is vital to include adequate amounts through a proper diet or by taking supplements.