Lysine: Benefits, Uses, Dosage & Side Effects

Lysine is utilized for a variety of reasons, but its benefits are not well understood. The following are some of the most common reasons people utilize lysine.

Cold sores

To strengthen muscle strength.

To promote bone health

The FDA has not evaluated the safety and efficacy of lysine. Discover more about dietary supplements here.

Lysine is an amino acid, which is a component of protein. Your body converts lysine into protein and energy. 

Your body requires lysine to function, but it cannot produce it on its own. As a result, you must obtain lysine from your food. Lysine occurs naturally in protein-rich foods such as meat, cheese, eggs, fish, beans, and tofu. Most Americans consume adequate amounts of lysine. Lysine can also be synthesized in a lab and is available as dietary supplements. Lysine may appear on product labels as L-lysine, which is the same substance.

Lysine may assist to inhibit the virus that causes cold sores (herpes simplex). However, the benefits of taking lysine by mouth to prevent or treat cold sores are not well understood. Lysine has been proven to aid in certain trials, but not in the majority. Lysine ointments are intended to be administered directly to a cold sore, although their efficacy is unclear. 

Lysine is required by the body to produce protein, hence some people utilize it to boost muscle strength. However, it is unclear whether lysine dietary supplements can assist develop muscle. Lysine is sometimes used to improve bone health, however it is unclear whether or not it works for this purpose.

Lysine should be stored according to the product label. Most dietary supplements should be stored in a cool, dry place out of the reach of children and pets, and out of direct sunlight.

Lysine is generally well tolerated. If you have any bothersome side effects, notify your healthcare provider.

Lysine may have side effects that have not been listed here. If you believe you are experiencing an adverse effect from a supplement, contact your healthcare provider.

While less prevalent, the most dangerous lysine adverse effects are listed here, along with what to do if they occur.

Severe allergic reactions. Lysine may produce allergy reactions that are severe. If you experience any of the following signs of a severe allergic reaction, stop using lysine immediately and seek medical attention.

breathing issues or wheezing.

A racing heart

Fever or general sick feeling.

Swollen lymph nodes.

Swelling of the lips, mouth, tongue, or throat.

Difficulty swallowing or throat tightness

itching or skin rash

Hives are bumps on the skin that can be red, pink, white, or brown depending on your skin tone.

Nausea or vomiting.

Dizziness, lightheadedness, or fainting

Stomach cramps.

Joint discomfort.

Allergies to ingredients. People who are allergic to any of the following should avoid lysine.

L-Lysine

Lysine

Any of the ingredients in the particular product

Your pharmacist can tell you about all of the ingredients in the lysine products they stock.

What do I need to know about lysine before using it?

Lysine is a dietary supplement. It cannot be advertised to treat or cure any condition.

Read and follow the instructions for the product you're using, or use it as directed by your health care professional.

Lysine is available in a variety of forms, including gummies, dry powdered powders, tablets, and capsules. It is also available as a topical ointment. If you're taking lysine as a gummy, chew it thoroughly before ingesting. If you are taking lysine powder, use a suitable measuring device, such as the one provided with the package. Read the label carefully and measure the amount indicated on it. 

The FDA has not evaluated lysine products to ensure that they contain the ingredients listed on the label. Some dietary supplements have been evaluated by third-party organizations to ensure that they contain the ingredients specified on the label and are free of dangerous substances. 

Inform your healthcare provider about any of your medical issues, as well as any prescription or over-the-counter (OTC) medications, vitamins/minerals, herbal products, and other supplements you are taking. This will help them determine whether lysine is right for you.

Pregnancy. Lysine's effect on pregnancy or fetal health is unknown. Inform your healthcare professional if you are pregnant or intend to become pregnant.

Breastfeeding. Lysine gets into breast milk. Inform your healthcare practitioner if you are nursing or want to breastfeed.