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Lysine is an important amino acid that is needed for human nutrition. The body needs lysine and it is critical to get it through diet or via supplements. Natural sources of lysine are abundant as it can be found in milk, cheese, yogurt, beans, meat, wheat germ, and animal proteins. As a medicinal agent, lysine has shown promise in treating various conditions such as cold sores and herpes. Some researchers have considered lysine as a possible treatment for osteoporosis, for anxiety, as an agent for lowering glucose, and for improving angina, migraines, and other sources of pain.


Lysine may be compounded into various forms as per your doctor's request, but often is given as an oral tablet. For treatment of herpes simplex labialis, your doctor may prescribe a combination of lysine with zinc oxide and other drugs. Consult with your compounding pharmacist if you have questions about methods of delivery. Always follow your doctor's exact directions for dosage.


Some users may experience side effects. Monitor any side effects as they progress and if they seem to be lingering or perhaps even getting worse, contact your doctor. A few of the more common side effects seen with lysine are:

  • Abdominal Pain
  • Diarrhea
  • Nausea

Long-term usage of lysine may be associated with kidney problems; ask your doctor for more information.

If you experience any side effect that feels severe, seek medical treatment at once.


All patients considering the use of lysine should first consult with their physician before beginning use as it is paramount for them to have comprehensive knowledge of your medical history as well as any medications that you have been taking.

NOTE: If you have osteoporosis or are taking any calcium supplements, do not use lysine unless you have discussed this with your doctor and he or she has decided that lysine is safe for your use.

Lysine is contraindicated for the following:

  • Anyone with Kidney Impairment
  • Anyone with Liver Impairment
  • Anyone with High Levels of Lysine in Blood and/or Urine
  • Lysine is probably contraindicated for most women who are pregnant or breastfeeding. Your primary care doctor will decide.

Lysine may be contraindicated for other conditions. Ask your doctor for a full overview of all possible contraindications and do not use lysine if there is any possible chance that it will negatively interact with your medical condition, disease, or with any other drug you are currently taking.

  • "It is rare to find health professionals who are so willing to educate the patient on what they need to know."

    Clair C. | West Hollywood, CA