Lysine is an essential amino acid that is found in beans, brewer’s yeast, cheese, dairy products, eggs, fish, legumes, lima beans, meat, milk, nuts, potatoes, seafood, seeds, soy, whey, whole grains, and yeast.

Lysine helps to regulate the pineal gland, mammary glands, and ovaries. It is important for growth and bone development, promotes calcium absorption, maintains nitrogen balances, aids in the production of antibodies, hormones, and collagen, and helps to build muscle tissue. Several studies have found that regular use of lysine supplements might be able to reduce the frequency and intensity of herpes virus flare-ups. Both cold sores and genital herpes are caused by the herpes simplex virus, after the initial infection with herpes the virus hides in nerves cells and causes flare-ups of the disease at times of stress, e.g. when the body is immunocompromised. In vitro studies suggest that lysine combats the herpes virus by blocking the amino acid arginine, which the herpes virus requires in order to replicate.

Symptoms and signs of lysine deficiency include: anemia, apathy, bloodshot eyes, depression, edema, fatigue, fever blisters, hair loss, inability to concentrate, infertility, irritability, lethargy, liver damage, loss of energy, muscle loss, retarded growth, stomach ulcers, and weakness.

1-3g of lysine a day is usually taken for the treatment of herpes.

Not established, however lysine supplements should not be taken for any longer than 6 months, as prolonged use may cause an imbalance of the amino acid arginine.

People who are allergic to eggs, milk, or wheat, and diabetics should not take supplementary lysine. People with kidney disease or liver disease should consult their doctor before taking lysine