Source Naturals L-Proline L-Lysine 275 mg/275 mg 120 TabletsSource Naturals L-Proline L-Lysine contains L-Lysine which is one of the 9 essential amino acids that cannot be made in the body. Source Naturals L-Proline L-Lysine is the basic raw material for carnitine synthesis. Source Naturals L-Proli
