All About Amino Acids

Isoleucine
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Why isoleucine is good for you

Isoleucine is an essential amino acid which is important in stabilising blood sugar and energy levels. Isoleucine is required to create haemoglobin (the oxygen carrying red blood cells which contain iron) and is also involved in blood clot formation. Isoleucine is often used by bodybuilders to help build more muscles.

 

Important isoleucine facts

 

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Groups at risk of isoleucine deficiency

People in these groups at risk of isoleucine deficiency should talk to a medical professional about isoleucine supplementation BEFORE taking it

 

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Symptoms of isoleucine deficiency

Deficiency only usually occurs in individuals who are deficient in dietary protein - symptoms are similar to hypoglycaemia and may include:

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Isoleucine and health

Talk to a medical professional about isoleucine supplements BEFORE taking them

 

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Isoleucine in food

FOOD AMOUNT
Isoleucine
(mg)
Tuna, canned in oil
1 can (171g)
2295
Chicken breast roasted, no skin
1 cup (140g)
2293
Snapper, cooked
1 fillet (170g)
2060
Halibut, cooked
1/2 fillet (159g)
1956
Soybeans, dry roasted
100g
1920
King mackerel, cooked
1/2 fillet (154g)
1845
Lean veal leg, cooked
100g
1808
Romano cheese
100g
1685
Lean veal sirloin, cooked
100g
1672
Lean shoulder lamb, cooked
100g
1651
Lean round beef, cooked
100g
1643
Gruyere cheese
100g
1612
Lean veal shank, cooked
100g
1588
Turkey, light meat only, cooked
100g
1570
Turkey breast only, cooked
100g
1563
Swiss cheese
100g
1537
Alaskan king crab
1 leg (172g)
1525
Turkey leg meat, cooked
100g
1518

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Isoleucine recommended daily intake (RDI)

RDA 12mg/kg body weight (adults)
28mg/kg body weight (kids 10-12)
80mg/kg body weight (infant 3-6mths)
 
TOLERABLE UPPER LIMIT 5-10g (none established)
 
TOXIC LEVELS 2g/kg of body weight (adults)

 

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Isoleucine works best with

In order to balance an isoleucine supplement, it needs to be kept in balance by: 2mg of each of leucine and valine for each 1mg of isoleucine. Talk to a natural health practitioner to get the right balance.

 

Overdosage, toxicity and cautions for isoleucine

Isoleucine taken at very high doses is associated with elevated urination.

CAUTION

High intake of isoleucine is not associated with any health risks in general, but those with kidney or liver disease should not consume high intakes of amino acids without medical advice.

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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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