Sources
Foods high in L-lysine include margarine, yogurt, cheese, papaya, beets, milk, mango, apricots, apples, pears, cottage cheese, figs, avocados, swordfish and salmon.
Uses
In alternative medicine, L-lysine supplements are used to heal cold sores and treat genital herpes, kidney stones, migraines and rheumatoid arthritis, says the Physicians Desktop Reference. L-lysine is also taken to prevent osteoporosis and improve athletic performance.
Time Frame
L-lysine supplements are generally considered safe when taken for less than one year, reports RxList.
Risks
Common side effects of L-lysine use include stomach pain and diarrhea. The amino acid also poses a risk for kidney damage, cautions the Physicians Desktop Reference.
Considerations
If you are pregnant or nursing or have kidney disease, it may not be safe for you to take L-lysine supplements.
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