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  • Kindly note that we are re-branding Zest for Life and that the new labels will be green - 
    replacing the silver labels we have had for 12 years - but this will be done on a systematic
    roll-out, and you will still receive vitamin products with silver labels for quite some time.

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Cystine amino acid information page

Cystine is a crystalline, sulfur-containing amino acid, formed from two molecules of the amino acid cysteine. It can be converted to cysteine by reduction and was discovered in 1810 but was not recognized as a component of proteins until 1899, when it was isolated from animal horn – it is particularly abundant in skeletal and connective tissues, hair and digestive enzymes.

The steps followed in the formation of cystine and cysteine, is from methionine to cystathionine and then to cysteine to cystine. For more information please see cysteine as well.

cystine

on this page

Cystine is required for

Required for proper vitamin B6 utilization and is also helpful in the healing of burns and wounds, breaking down mucus deposits in illnesses such as bronchitis as well as cystic fibrosis.

wound healing cream

Cysteine also assists in the supply of insulin to the pancreas, which is needed for the assimilation of sugars and starches.

It increases the level of glutathione in the lungs, liver, kidneys and bone marrow, and this may have an anti-aging effect on the body by reducing age-spots etc.

It has been shown as a detoxification agent to protect the body against damage of alcohol and cigarette smoking, and may be effective in preventing hangovers, as well as preventing liver and brain damage.

Deficiency of cystine

In chronic diseases it appears that the formation of cysteine from methionine is prevented, resulting in a deficiency.

Dosage

The dosage listed 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.

Toxicity and symptoms of high intake

People suffering from diabetes should be careful when taking supplementation, as it could inactivate insulin.

Cystine 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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Cellumend anti-cellulite cream
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.