All About Amino Acids

Lysine
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Why lysine is good for you

Lysine is an essential amino acid and is required for growth and bone development in children, assists in calcium absorption and assists in maintaining the correct nitrogen balance in the body, as well as maintaining lean body mass. Lysine is also needed to produce antibodies, hormones, enzymes, collagen formation as well as repair of tissue.

 

Important lysine facts

 

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Groups at risk of lysine deficiency

People in these groups at risk of lysine deficiency should talk to a medical professional about lysine supplements BEFORE taking them.

 

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Symptoms of lysine deficiency

Deficiency of lysine is rare, as it is found in so many protein foods. Symptoms of deficiency may include:

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Lysine and health

Talk to a medical professional about lysine supplements BEFORE taking them

 

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Lysine in food

FOOD AMOUNT
Lysine
(mg)
Tuna, canned in oil
1 can (171g)
4575
Snapper, cooked
1 fillet (170g)
4105
Halibut, cooked
1/2 fillet (159g)
3896
Chicken breast, meat only, cooked
1 cup (140g)
3689
King mackerel
1/2 fillet (154g)
3677
Round beef, 0% fat, cooked
100g
3053
Lean veal leg, cooked
100g
3025
Lean shoulder lamb, cooked
100g
3018
Romano cheese
100g
2941
Pink salmon, cooked
1/2 fillet (124g)
2912
Turkey, light meat only, roasted
100g
2845
Turkey breast only, roasted
100g
2833
Lean pork loin chops, cooked
100g
2800
Yellow fin tuna, cooked
100g
2753
Turkey leg (meat only), roasted
100g
2751
Blue fin tuna
100g
2747
Alaska king crab, cooked
1 leg (172g)
2738
Turkey, dark meat only, roasted
100g
2718

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Lysine recommended daily intake (RDI)

RDA 99mg/kg body weight (infants)
44mg/kg body weight (children)
32mg/kg body weight (adults)
 
TOLERABLE UPPER LIMIT 300-3000mg
 
TOXIC LEVELS >10g per day

 

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Lysine works best with

 

Overdosage, toxicity and cautions for lysine

Side effects with lysine are usually rare, although diarrhoea and stomach cramps have been reported in very high dosage, but these have not been shown to be consistent.

CAUTIONS

Pregnant or breast feeding mothers, as well as patients with liver or kidney problems, must first consult a health professional before taking lysine supplements

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references

 

Last reviewed: 11 January 2007 || Last updated: 26 September 2007

 

NOTE: Mega doses of vitamins, minerals or other nutrients cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of amino acid supplement.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.

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