Source Naturals

L-Lysine is an essential amino acid which acts as a predecessor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a...

L-Lysine is an essential amino acid which acts as a predecessor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a...

L-Lysine is an essential amino acid which acts as a predecessor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a...

L-Lysine is an essential amino acid which acts as a predecessor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a...

L-Ornithine, a free-form crystalline amino acid, is a predecessor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L-Ornithine is...

L-Ornithine, a free-form crystalline amino acid, is a predecessor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L-Ornithine is...

L-Phenylalanine, an essential amino acid, is a predecessor of the amino acid tyrosine and a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes...

L-Phenylalanine, an essential amino acid, is a predecessor of the amino acid tyrosine and a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes...

L-Proline is an amino acid involved in the production of collagen and cartilage and may help support healthy joints and a healthy musculoskeletal system. L-Proline can be made in the body, but low...

L-Lysine is one of 9 essential amino acids that cannot be made in the body. It is the basic raw material for carnitine synthesis. L-Proline can be made in the body, but low protein/vegetarian diets...

L-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown...

L-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown...