Source Naturals

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...

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-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a predecessor for neurotransmitters in the brain. Tyrosine is also a predecessor for the protective skin...

L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a predecessor for neurotransmitters in the brain. Tyrosine is also a predecessor for the protective skin...

L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a predecessor for neurotransmitters in the brain. Tyrosine is also a predecessor for the protective skin...

L-Valine is an an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAA's stimulate protein synthesis directly in muscle tissue. Valine is a major fuel involved...

Lactose intolerance occurs in more than 50% of the world's population. Source Naturals Lactase Digest assists in the digestion of dairy products for people with lactose intolerance. Lactase Digest...

Lactose intolerance occurs in more than 50% of the world's population. Source Naturals Lactase Digest assists in the digestion of dairy products for people with lactose intolerance. Lactase Digest...