Sources - Vitamins, Nutrients

L-Carnitine
Dairy and red meat contain the greatest amounts of carnitine. Therefore, people who have a limited intake of meat and dairy products tend to have lower L-carnitine intakes.

Cysteine
The body can synthesize cysteine from methionine and other building blocks. Cysteine, the amino acid from which NAC is derived, is found in most high-protein foods.

Phenylalanine
LPA is found in most foods that contain protein. DPA does not normally occur in food. However, when phenylalanine is synthesized in the laboratory, half appears in the L-form and the other half in the D-form. These two compounds can also be synthesized individually, but it is more expensive to do so. The combination supplement (DLPA) is often used [...]

Glutamic Acid
Sources of glutamic acid include high-protein foods, such as meat, poultry, fish, eggs, and dairy products. Some protein-rich plant foods also supply glutamic acid.

Glutamine
Glutamine is found in many foods high in protein, such as fish, meat, beans, and dairy products.

Glycine
Glycine is found in many foods high in protein, such as fish, meat, beans, and dairy.

Histidine
Dairy, meat and poultry, and fish are good sources of histidine.

L-Tyrosine
Dairy products, meats, fish, wheat, oats, and most other protein-containing foods contain tyrosine.

Methionine
Meat, fish, and dairy are all good sources of methionine. Vegetarians can obtain methionine from whole grains, but beans are a relatively poor source of this amino acid.

Ornithine
As with amino acids in general, ornithine is predominantly found in meat, fish, dairy, and eggs. Western diets typically provide 5 grams per day. The body also produces ornithine.

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