Source Naturals

L-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved...

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-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...