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Methionine amino acid information page

Methionine is a sulfur containing essential amino acid and was first isolated in 1922 from casein and belongs to a group of compounds called lipotropics - the others in this group include choline, inositol, and betaine. It is important in the process of methylation where methyl is added to compounds as well as being a precursor to the amino acids cystine and cysteine.

methionine

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Methionine is required for

It assists in the breakdown of fats and thereby prevents the build-up of fat in the arteries, as well as assisting with the digestive system and removing heavy metals from the body since it can be converted to cysteine, which is a precursor to gluthione, which is of prime importance in detoxifying the liver.

The amino acid methionine is also a great antioxidant as the sulfur it supplies inactivates free radicals. It may also be used to treat depression, arthritis pain as well as chronic liver disease - although these claims are still under investigation. Some studies have also indicated that methionine might improve memory recall.

It is also one of the three amino acids needed by the body to manufacture creatine monohydrate, a compound essential for energy production and muscle building.

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Deficiency of methionine

Severe deficiency may manifest in dementia, while lesser deficiencies may be known by symptoms like fatty liver, slow growth, weakness, edema and skin lesions.

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Dosage

The dosage listed underneath is the Recommended Daily Allowance (RDA), but be aware that this dosage is the minimum that you require per day, to ward off serious deficiency of this particular nutrient. In the therapeutic use of this nutrient, the dosage is usually increased considerably, but the toxicity level must be kept in mind.

The daily dosage of methionine is about 12 mg per kilogram of body weight per day - which would translate to about 840 mg for a 70 kg male.

Toxicity and symptoms of high intake

It has been suggested that a high intake of methionine, in the presence of B vitamin deficiencies, may increase the risk for arteriosclerosis (hardening of the arteries) by increasing blood levels of cholesterol and a compound called homocysteine; and that excessive methionine intake, with an inadequate intake of folic acid, vitamin B6 and vitamin B12, may increase the rate of conversion of methionine to homocysteine - both these theories have not been proven in humans.

Best used with

If you are considering taking a methionine supplement, it is best to balance it with choline and inositol.

When more may be required

People with liver problems, pancreatitis, HIV/AIDS as well as Parkinson's disease may consider obtaining more methionine, after consultation with their health professional, and older people may also benefit from a slightly higher intake of this nutrient.

Women on birth control pills could also look at this nutrient, since it promotes the excretion of estrogen. People suffering from schizophrenia could investigate taking extra methionine since it reduces the level of histidine in the body, a level normally higher in people suffering from schizophrenia.

Food sources

Methionine is found in good quantities in meat, fish, beans, eggs, garlic, lentils, onions, yogurt and seeds.

Methionine found in the following Zest for Life products

Our Zest for Life vitamin and supplement range
SPECIALTY FORMULAS
CLASSIC VITAMIN RANGE BELOW

adaptogens cope balance not stimulant not sedative

dermaxime anti-aging supplement most advanced dietary way to fight aging

anti-oxidants kills free radicals that can cause premature aging and degenerative diseases

apple cider vinegar capsules

bosyguard immune boosting capsule

dietary enzymes

hair skin nail boost stong nails glossy hair clear complexion

millennium 2000 weight loss capsule

oystacal calcium supplement better bone density fights osteoporosis

phytosterols phytomedicine plant sterols sterolins

resveratrol alpha lipoic acid anti-oxidant anti-aging

 

vitalyze vitamin B boost capsules

vuka 2000 male sexual supplement

CLASSIC RANGE OF VITAMINS
SPECIALTY FORMULAS ABOVE

vitamin c ascorbic acid

Nutritional information

zest for life vitamin supplements

Underneath we have information page on vitamins, minerals, amino acids, trace elements, enzymes and various nutritional compounds that can impact greatly on your general health, well-being and longevity.

Please note that these pages are for general information only and must not be used to treat or diagnose health concerns.

 
Fat soluble vitamins Trace elements
vitamin ABoron
Vitamin DChromium
Vitamin ECobalt
Vitamin KCopper
Fluorine
Water soluble vitaminsIodine
Vitamin C (Ascorbic acid)Iron
B Complex vitaminsManganese
Vitamin B1 (Thiamine, Thiamin)Molybdenum
Vitamin B2 (Riboflavin)Selenium
Vitamin B3 (Niacin, Niacinamide, Nicotinic Acid)Silicon (Silica)
Vitamin B5 (Pantothenic Acid)Zinc
Vitamin B6 (Pyridoxine)
Vitamin B9 (Folacin, Folic Acid)Enzymes
Vitamin B12 (Cyanocobamin, Cobalamin)Amylase
PABA (Para-AminoBenzoic Acid)Bromelain
CholineCoenzyme Q10
InositolLactase
Vitamin H (Biotin)Lipase
Protease
Amino AcidsMaltase
Alanine
ArginineMiscellaneous nutritional ingredients
AsparagineAdaptogens
Aspartic acidAlpha Lipoic Acid
Branched-Chain Amino AcidsAntioxidants
CarnitineApple Cider Vinegar
CitrullineAstaxanthin
CysteineCreatine
CystineFatty acids
GABA (Gamma-Aminobutyric Acid)Piperine (Pepper extract)
Glutamic acidResveratrol
GlutamineVitamin B13 (Orotic acid)
GlutathioneVitamin B15 (Pangamic Acid)
GlycineVitamin B17 (Laetrile, Amygdalin)
HistidineVitamin F (Fatty Acids)
HydroxyprolineVitamin P (Bioflavonoids)
IsoleucineVitamin T
LeucineVitamin U
Lysine
MethionineHerbal ingredients
NAC (n-Acetyl Cysteine)Echinacea
OrnithineGinger
PhenylalanineGinkgo Biloba
ProlineGinseng
SerineGoldenseal
TaurineGotu Kola (Centella)
ThreonineGrape Seed Extract
TryptophanGreen Tea
TyrosineLicorice
ValineMuira Puama
Olive Leaf Extract
MineralsPhytosterols
CalciumSt John's Wort
ChlorideTribulus Terrestris
Magnesium
PhosphorusWater
PotassiumCarbohydrates
SodiumProtein
SulfurCalories
 
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Sanitoets home test kits and testing strips
Zest for Life vitamin supplements
Olinat pure natural facial moisturizing cream
Creme de Vie anti-wrinkle cream

 



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Our site was last updated on 5 April 2014.