Topical lysine can also be used for up to a year. Side effects can include stomach pain and diarrhea. Certain people should avoid lysine supplements. There is not enough evidence to know if it is safe for people who are pregnant or breastfeeding.
People with kidney disease , lysinuric protein intolerance a condition in which the body can't use lysine and other amino acids , or osteoporosis should ask a doctor before taking lysine. Most people can get enough lysine by following a balanced diet containing high-protein foods. There is no standard recommended dose for lysine as a supplement or for topical use. Different doses have been used in research. For cold sores, studies have used doses of mg daily or mg three times daily.
Doses applied to the skin vary. If you want to use lysine supplements to treat or prevent a specific health problem, ask your doctor first. They can help you find the right dose and provide instructions for use. The National Institutes of Health NIH recommends checking the supplement facts label before buying any dietary or herbal supplement, including lysine. This label provides important information about the amount of active ingredient per serving.
It should also include information about other ingredients. The NIH also recommends looking for a product that has been quality tested by an independent organization. Most supplements that have been quality tested will include these details in the product information. Quality testing organizations include:. A seal of approval from one of these organizations helps you know that the product was properly manufactured, contains the listed ingredients, and does not include harmful levels of contaminants.
It does not, however, guarantee the product's safety or effectiveness. Make sure to read the label before you purchase any supplement. Look for supplements that have been quality tested by a third party. Lysine is an important amino acid that can be found in high-protein foods like meat, nuts, beans, and eggs. It is also available as an oral supplement or topical ointment. Some research suggests that lysine may be helpful for treating certain conditions, such as cold sores and anxiety. Before taking lysine, talk to your doctor about dosage and use.
Some studies have shown that lysine has a small impact on glucose levels. Lysine is consumed naturally in meat beef, pork, poultry , cheese, certain fish, eggs, beans, legumes, and dairy products. Most people get enough lysine in their diets, but those who do not may experience fatigue, nausea, dizziness, loss of appetite, agitation, bloodshot eyes, anemia, and reproductive challenges. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life.
Medicinal uses of l-lysine: past and future. Int J Res Pharm Sci. Mailoo VJ, Rampes S. Lysine for herpes simplex prophylaxis: a review of the evidence.
Integr Med. Interventions for prevention of herpes simplex labialis cold sores on the lips. Cochrane Database Syst Re v. Safety and effectiveness of an L-lysine, zinc, and herbal-based product on the treatment of facial and circumoral herpes. Altern Med Rev. Camfield DA. Nutritional-based nutraceuticals in the treatment of anxiety. Springer; Doctors do not recommend lysine supplements for children or for women who are pregnant or breastfeeding.
People taking lysine supplements should monitor their cholesterol levels due to the potential link with higher cholesterol. Lysine is an essential amino acid. It is one of the building blocks of proteins and is necessary for human health. The body does not make lysine on its own, but most people take in enough through their diet to meet basic health needs. Lysine has very few known side effects. Scientific data on some lysine benefits are not yet conclusive.
However, many people are exploring the use of lysine supplements, particularly in athletes and people who do not eat animal products. It is best to discuss the use of any supplement with a doctor. Phenylketonuria is a rare genetic condition that affects how amino acids are broken down in the body. Learn more about how the condition is managed. Chemicals in the gallbladder or a nearby bile duct can solidify, forming a large stone or several small ones. In this article, learn about removal….
Calcium provides many health benefits. Some people who are vegan, lactose intolerant, or who do not consume dairy products for other reasons wonder…. Small studies have suggested that yoga provides a range of health benefits, including lowering blood pressure. Here, learn how yoga may help with…. Herpes simplex is a very common virus that affects billions of people globally. It can cause sores around the mouth or on the genitals and surrounding….
What are the health benefits of lysine? Medically reviewed by Zara Risoldi Cochrane, Pharm. What is it? Benefits Sources Side effects How to use Interactions Risks Summary Lysine is one of the essential amino acids, which are those that the body cannot make and that people need to obtain from dietary sources.
What is lysine? Share on Pinterest Lysine supplements are available in liquid form. Health benefits of lysine. Sources of lysine. Furthermore, not all studies show that lysine is effective in reducing cold sore occurrence or duration.
One review found insufficient evidence to recommend it for treating cold sores 5. Summary Some studies show that lysine can reduce the duration and frequency of cold sores, but the evidence is inconsistent. Lysine may play a role in reducing anxiety. One study found that it blocked receptors involved in stress response.
Researchers observed that rats given lysine had reduced rates of stress-induced loose bowel movements 6. A one-week study in 50 healthy people noticed that supplementing with 2. Similarly, adding 4. After three months, consuming the lysine-enriched flour also helped reduce cortisol levels in women 8. Though research is still in its early stages, lysine may have the potential to improve schizophrenia symptoms in combination with prescribed medication 9 , Summary Lysine may help reduce feelings of anxiety and reduce levels of the stress hormone cortisol in some people.
Early research indicates that it may even help improve symptoms in people with schizophrenia. Lysine may help your body hold on to calcium 11 , A study in 30 women, 15 healthy and 15 with osteoporosis, found that supplementing with calcium and lysine reduced the loss of calcium in the urine. The women given 3 grams of calcium alone had a progressive increase in calcium in their urine. However, the women who also received mg of lysine lost less calcium through their urine Lysine appears to protect your bones and may also play a part in controlling whereto calcium is transported in your body.
For example, it has been shown to prevent the buildup of calcium in blood vessels in rats. This kind of buildup is a risk factor for heart disease Furthermore, one test-tube study found that cells that were grown without lysine had an increased movement of calcium out of the cell. This increase did not occur in the cells that had lysine present Summary Lysine may help you absorb more calcium and reduce the loss of calcium in your urine.
It could even reduce the risk of calcium buildup in your blood vessels. In animal tissue, lysine becomes more active at the site of a wound and helps speed up the repair process Lysine is required for the formation of collagen , a protein that acts as a scaffold and helps support and give structure to skin and bones Lysine itself may also act as a binding agent, thereby increasing the number of new cells at a wound.
It may even promote the formation of new blood vessels In one animal study, a combination of lysine and the amino acid arginine was able to speed up and improve the healing process of fractures
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