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L-Cysteine
Pharmaceutical grade for maximum bioavailability.
99.98% pure with no fillers, excipients or
additives.
L-Cysteine is a
crystalline free-form amino acid that is active in many body processes.
L-Cysteine works in the liver to protect the body from harmful substances and
may help to prevent oxidation of tissues. L-Cysteine, along with L-glutamic acid
and glycine, is the rate-limiting precursor in the synthesis of glutathione
peroxidase, one of the body's main antioxidant enzymes, which minimizes lipid
peroxidation (fats turning rancid).
L-Cysteine is a conditionally essential amino acid, meaning that it may be
manufactured in our bodies if all conditions are met. This process is extremely
complex however, requiring the availability of other amino acids and vitamins
and is carried out through a number of enzymatic steps. Because of the
complexity of this process there is a greater risk of deficiency for cysteine
than for many other amino acids. L-Cysteine is a sulfur containing amino acid
which can usually be made from L-Methionine and elemental sulfur by the body. |

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Powder |
150 Grams |
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Item #24260 |
$10.15 |
save 55% |
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Powder |
500 Grams |
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Item #24261 |
$29.85 |
save 65% |
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Powder |
1,000 Grams
2 bottles of 500 Grams |
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Item #24262 |
$53.55 |
save 72% |
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500 mg
Vegetable Capsules |
150 V-Caps |
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Item #24266 |
$12.78 |
save 60% |
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500 mg
Vegetable Capsules |
500 V-Caps |
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Item #24267 |
$33.96 |
save 68% |
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500 mg
Vegetable Capsules |
1,000 V-Caps |
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Item #24268 |
$59.97 |
save 75% |
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L-Cysteine is a
crystalline free-form amino acid that is active in many body processes.
L-Cysteine works in the liver to protect the body from harmful substances and
may help to prevent oxidation of tissues. L-Cysteine, along with L-glutamic acid
and glycine, is the rate-limiting precursor in the synthesis of glutathione
peroxidase, one of the body's main antioxidant enzymes, which minimizes lipid
peroxidation (fats turning rancid).
L-Cysteine is a conditionally essential amino acid, meaning that it may be
manufactured in our bodies if all conditions are met. This process is extremely
complex however, requiring the availability of other amino acids and vitamins
and is carried out through a number of enzymatic steps. Because of the
complexity of this process there is a greater risk of deficiency for cysteine
than for many other amino acids. L-Cysteine is a sulfur containing amino acid
which can usually be made from L-Methionine and elemental sulfur by the body.
Because of its high affinity for binding metals and other toxins L-Cysteine is
frequently taken in combination with Vitamin C to detoxify, chelate, and remove
harmful metals and free radicals from the body. An adequate supply of Vitamin C
and B6 should always accompany any L-Cysteine supplementation.
One of the most important recent discoveries about cysteine is that is required
for the formation of glutathione, a tripeptide that also contains the amino
acids glycine and glutamic acid.
The cysteine-glutathione connection is important because glutathione is a
critical regulator of cell health. It is essential for maintaining
electrochemical balance in many cells. It functions as a detoxifying agent in
the kidneys and is required for elimination of many environmental toxins,
including fungicides, herbicides, nitrosamines, dyes, solvents, plastics,
detergents, and insecticides. Glutathione is also required genetically, for
synthesis and repair of DNA, as well as for neutralization of free radicals that
can damage healthy cells. Immune function, nerve function and cell signaling
functions are also heavily influenced by glutathione. Within the immune function
category, wound healing, especially healing from skin wounds, appears to depend
on glutathione availability.
L-Cysteine is listed as an essential element in nutritional treatment of
alcoholism, hepatitis, and schizophrenia. As an amino acid it is thought to be
important for cirrhosis, emphysema, environmental toxicity, heart attack,
legionnaires disease, lupus, nail problems, pneumonia, and tuberculosis. It is
important for dandruff, food poisoning, hypoglycemia, sunburn, thrombophlebitis,
warts, Wilson's Disease and helpful for acne, allergies,
arteriosclerosis/atherosclerosis, arthritis, asthma, ADD, candidiasis,
circulatory problems, cystic fibrosis, dry skin, hair loss, infertility, oily
skin, pancreatitis, and rosacea.
What is the difference between
Cysteine and Cystine? Cysteine is a monomer and Cystine is a dimmer, which
is formed by two cysteine molecules. Generally, Cystine is more stable than
Cysteine, however, both can be converted into the other form as required by the
body. Most supplements contain Cysteine more than Cystine because the absorption
of Cysteine is better than Cystine. Cysteine is required by the skin and
detoxification of the body, and Cystine is required for vitamin B6 utilization
and also helps for wound healing. |
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We guarantee our
supplements to be the freshest and purest:
Our powders and
capsules contain only pure active ingredient
with absolutely no additives. Other
manufacturers, in an effort to keep costs down,
dilute their products with cheap fillers and add chemical excipients
to their products to speed up their manufacturing output. These
practices cheat you out of the active ingredient. At NutraBio, we've
perfected our manufacturing technology so that excipients aren't
needed, that means no
microcrystalline cellulose, magnesium stearate, silica or other
fillers, just 100% pure active ingredient.
NutraBio supplements are
manufactured under the strictest standards producing the highest
quality and purest supplements available anywhere. Our raw
ingredients undergo state of the art HPLC analysis to insure zero
tolerance for impurities.
 |
Expiration |
30
months minimum |
|
Grade |
pharmaceutical |
|
Purity |
99.94%+
purity (HPLC) |
|
Taste |
somewhat sour taste, palatable, not bad. |
|
Solubility |
water
soluble. |
|
Characteristics |
kosher,
vegetarian, hypoallergenic |
|
Appearance |
white
crystalline powder |
|
Odor |
n/a |
|
pH |
1.8 |
|
Classification |
free
from amino acid,
non-essential/conditionally essential |
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CAS
Registry |
7048-04-6 |
|
Synonyms |
L-Cysteine hydrochloride anhydrous |
|
Molecular Formula |
C3H7NO2S-HCl |
|
Molecular
structure |
 |
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Suggested Usage:
As a dietary supplement, take
1 serving with water or your favorite beverage up to 2 times
daily between meals, or
as directed by your physician. Read all warning before taking L-Cysteine.
If you experience stomach irritation, take with meals.
Kosher, Vegetarian and
Hypoallergenic:
Free of the most common allergens such as yeast, dairy, egg, gluten, corn, soy,
rice, barley, lactose, fish and wheat. No added sugars, starch, salt,
preservatives, salicylates, or artificial color, flavor or fragrance.
Warning:
NOT INTENDED FOR USE
BY PERSONS UNDER THE AGE OF 18. KEEP OUT OF THE REACH OF CHILDREN. If you are pregnant or breast feeding, consult your health care
professional before using this product. People with known medical
conditions and/or taking drugs should consult with a licensed physician and/or
pharmacist prior to taking any dietary supplements.
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Quality
& Purity since 1996: Since 1996, NutraBio has manufactured
the purest pharmaceutical grade products available. Each batch is laboratory
tested to be at least 99.9% pure or we won't ship it to you. We manufacture in
the United States to meet FDA 21 CFR Part 111 c-GMP regulations and all
ingredients undergo state-of-the-art analysis to insure zero tolerance for
impurities. We ship our products direct to you to guaranty the freshness.
- Manufactured by us in our GMP facility.
-
HPLC
laboratory tested for purity.
- Freshly manufactured - never
expired or closeout products.
- Backed by the NutraBio 30-Day money back guarantee.
No excipients or fillers: Our
goal is to manufacture our supplements as pure as possible, so we don't use fillers, binders, or chemical excipients. Other manufacturers,
in an effort to keep costs down, dilute their products with cheap fillers and
excipients, which cheats you out of the active ingredient and contaminates your
product with unneeded chemicals. At NutraBio, we keep our products clean and
only use excipients when absolutely necessary. Purity is our #1 goal.
Purchase
manufacturer direct at wholesale price: Buy directly from the
manufacturer and save. We cut out the middlemen and pass the savings on to you.
With NutraBio, you pay the same low wholesale price that the chain stores pay.
Did you know that most companies do not manufacture their products but use 3rd
party manufacturers. Since we manufacture all of our own products we
can control the quality and purity through the entire manufacturing process.
FREE dosing scoop with your
powder order: Get the exact dosage every time with a free single-dose
scoop. This scoop was designed by our lab
to give you exactly one serving each time. No more measuring or guessing.
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