Sona L Lysine is an essential amino acid that is a necessary building block for all proteins. It is needed for proper growth and bone development in children. L Lysine helps in the collagen formation and tissue repair, and is therefore good for those recovering from surgery and sports injuries as it helps to repair muscle protein. It is also used to prevent cold sores. Product Size: 45 or 90 tablets How to Use One to be taken daily. Ingredients Contains: Ingredients (per tablet) Amount %NRV L-Lysine 1000mg N/A