Animal proteins provide the richest sources of L-arginine. Seafood, such as tuna, salmon, shrimp and crab, contains high levels of the amino acid, while beef, pork, poultry and most dairy also provide a rich supply. Argi... More »

One food that contains L-tryptophan is the kidney of a Stellar sea lion. Two hundred grams of the meat contain 2580 milligrams of this amino acid. More readily available foods that contain L-tryptophan include raw Alaska... More »

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Magnesium-rich foods are the most natural beta blockers, according to Health Medicine Book. Ancient Minerals states that foods high in magnesium include spinach, almonds, halibut and mackerel. More »

L-arginine is an amino acid that is essential for creating proteins in the body, explains WebMD. The body converts it into nitric oxide, a chemical that widens the blood vessels for better blood flow. L-arginine also hel... More »

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Purines are found in all proteins, such as organ meats, beef, pork, lamb, game meats, anchovies, herrings, mackerel, sardines, scallops, and meat gravies and extracts. Purines are also found in yeast, legumes, mushrooms,... More »

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Foods rich in iron include beef and chicken liver; seafood such as clams, mollusks, mussels, oysters and sardines; and plant sources such as spinach, beans, tofu, pumpkin seeds and sesame seeds. Other good sources of iro... More »

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Food sources of vitamin B12 include meat, salmon, cod, milk, cheese, eggs and fortified breakfast cereals, according to the National Health Service of the United Kingdom. Vitamin B12 is essential in creating red blood ce... More »

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