Top up your levels of the naturally-occurring amino acid Proline with L-Proline from leading supplements brand Swanson Health. The building blocks of protein, amino acids are popular with many people following an active lifestyle. Proline is made in the liver and is a precursor to hydroxyproline, a component of collagen and connective tissue. Each capsule is packed with 500mg of L-proline and is an easy way to increase the amount of proline in your diet. Top up your levels of naturally-occurring amino acid proline with L-Proline from leading supplements brand Swanson Health. Amino acids are popular with many people following an active lifestyle and each capsule is packed with 500mg of L-proline. Proline is made in the liver and is a precursor to hydroxyproline, a component of collagen and connective tissue. Naturally occurring amino acid. 500mg of L-proline per capsule. 100 capsules per pack Amino acids are the building blocks of protein, of which nine are essential and need to be consumed as part of our daily diet. Eleven are classified as non-essential but may need topping up from time to time. L-Proline capsules are an easy way to add proline into your daily diet. L-Proline is an amino acid that is produced by the body in the liver. Increase your L-Proline intake with Swanson Health. Try it out now!