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A 34-year-old male asked:

what is lysine?

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Dr. Kathleen Mullane
Internal Medicine 32 years experience
Essential amino acid: Lysine is an esential Amino Acid (a building block for proteins) that is not synthesized in animals. We get it from aspartic acid from plants(especially legumes) or our friendly flora (bacteria), eggs, meats, soy, cheese and fish. It is metabolized to get acetyl-coa which is essential for production of energy & acetylcholine. It's been pro-ported for immunodeficiency, anxiety, cancer, incr bp..

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A 39-year-old member asked:

Why would require lysine?

1 doctor answer1 doctor weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Can't make it: Everybody needs some lysine in their diet as an essential amino acid; especially, vegetarians need to take note. Lysine as a dietary supplement seems to slow down cold sores, and the stuff is promoted to athletes probably without any real benefit.
A 46-year-old member asked:

What's the ld50 of lysine?

1 doctor answer1 doctor weighed in
Dr. Ed Friedlander
Pathology 44 years experience
Unmeasurable: Lysine is an essential Amino Acid that many people take in generous amounts to control fever blisters. It probably cannot kill you, so there is no ld50.

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Last updated Jun 24, 2014

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