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DESCRIPTION VITAMIN CThe term vitamin C applies to substances that possess antiscorbutic activity and includes two compounds and their salts: L-ascorbic acid, commonly called ascorbic acid, and L-dehydroascorbic acid.
Ascorbic acid is the major dietary form of vitamin C. The terms vitamin C, ascorbic acid and ascorbate are commonly used interchangeably.
Vitamin C is a hexose derivative, similar in structure to the six-carbon sugar glucose. It is an essential nutrient for humans, and, as pointed out by Linus Pauling in 1970, "differs from other nutrients in that it is required in the diet by only a few species of animals—man, other primates, the guinea pig, an Indian fruit-eating bat, and the red-vented barbul and some related species of Passeriform birds." It is also an essential nutrient for Coho salmon, rainbow trout, carp and some insects. Most other animals, all higher plant species and probably all algal classes can synthesize vitamin C from glucose or other sugars. Molecules similar to ascorbic acid are made by some fungi but not by bacteria. All vitamin C requiring animals lack the enzyme L-gulano-gamma-lactone oxidase, the final step in the synthesis of ascorbic acid from glucose.
The major deficiency syndrome of vitamin C is scurvy. Symptoms of scurvy include inflamed and bleeding gums, petechiae, ecchymosis, follicular hyperkeratosis, coiled hairs, perifollicular hemorrhages, impaired wound healing, dry eyes and mouth (Sjögren's syndrome), arthralgia, joint effusions, muscle weakness, myalgia, fatigue, depression, frequent infections, anemia, anorexia, diarrhea, and pulmonary and kidney problems that can lead to coma and death. All systems of the body are affected by scurvy.
The antiscorbutic factor was isolated from the ox adrenal cortex in 1928 by the Hungarian biochemist Albert Szent-Györgyi and his colleagues. In 1932, the American biochemist Glen King and his colleagues isolated this factor from lemon juice. Structural studies revealed this factor to be a sugar acid and, before it was named ascorbic acid, it was called hexuronic acid and godnose.
Many of the symptoms of scurvy, particularly those having to do with connective tissue, can be explained by the known biochemical roles of vitamin C, particularly its role as a cofactor for prolyl and lysyl hydroxylase, enzymes important in the formation of collagen. Collagen synthesized in the absence of ascorbic acid—as occurs in scurvy—cannot properly form fibers, resulting in blood-vessel fragility, among other defects. In the prolyl and lysyl hydroxylase reactions, as well as in most of the biochemical reactions ascorbic acid participates in, it acts as a reducing agent. In these reactions, the vitamin reduces ferric and cupric ions to their ferrous and cuprous states, forms which are required for the reactions to proceed.
Ascorbic acid is also involved in the biosynthesis of other connective-tissue components, including elastin, fibronectin, proteoglycans, bone matrix and elastin-associated fibrillin. It also appears to play a role in collagen gene expression and cellular procollagen secretion.
The fatigue and weakness of scurvy may be due to L-carnitine deficiency. Ascorbic acid is a cofactor for crucial reactions in the carnitine biosynthetic pathway.
Ascorbic acid is involved in modulating iron absorption, transport and storage. It aids in the intestinal absorption of iron by reducing ferric iron to ferrous iron and may stimulate ferritin synthesis to promote iron storage in cells. It is involved in the biosynthesis of corticosteroids, aldosterone, the conversion of cholesterol to bile acids and functions as a reducing agent for mixed-function oxidases.
For all of this, ascorbic acid is best known for its antioxidant properties and its possible role in the prevention of certain chronic degenerative disorders, such as coronary heart disease and cancer. In fact, ascorbic acid may be the most important water-soluble antioxidant in the body.
The daily dietary intake of vitamin C necessary to prevent scurvy is about 5 to 10 milligrams. Scurvy is rare in developed countries, since most people living in these countries typically consume much more than this amount.
About 90% of vitamin C in the average diet comes from fruits and vegetables. Peppers—sweet green and red peppers and hot red and green chili peppers—are especially rich in vitamin C. Other good sources include citrus fruits and juices, brussels sprouts, cauliflower, cabbage, kale, collards, mustard greens, broccoli, spinach and strawberries. Nuts and grains contain very little vitamin C. Cooking destroys vitamin C activity.
About 5% to 10% of the total vitamin C content of fresh fruits and vegetables is comprised of dehydroascorbic acid. In the case of processed foods, dehydroascorbic acid makes up about 30% of the vitamin C content. D-ascorbic acid (erythorbic acid or isoascorbic acid), the epimer of L-ascorbic acid, is frequently added to food as an antioxidant preservative. Erythorbic acid has very low vitamin C activity.
In addition to being known as ascorbic acid and L-ascorbic acid, vitamin C is also known as 2, 3-didehydro-L-threo-hexano-1, 4-lactone, 3-oxo-L-gulofuranolactone, L-threo- hex-2-enonic acid gamma-lactone, L-3-keto-threo-hexuronic acid lactone, L-xylo-ascorbic acid and antiscorbutic vitamin. It is abbreviated AA. Ascorbic acid is a crystalline, water-soluble substance with a pleasant (to some), sharp acidic taste. Its molecular weight is 176.13 daltons, and its molecular formula is C6H8O6. v
THE FUTURE OF VITAMIN C IS HERE! Superior absorption that's gentle on the stomach All the benefits of Vitamin C combined with Calcium Effective antioxidant formula
Ester-C is the most advanced form of vitamin C available. It has been specially formulated for faster absorption and retention so you can obtain the maximum benefits of vitamin C quickly. By "esterfying" vitamin C with calcium and bioflavanoids, this formula is estimated to be absorbed 400% faster than regular vitamin C. Ester-C also has a neutral pH that helps protect you from the stomach upset that can accompany other vitamin C products.
Vitamin C is a water-soluble vitamin used by the body in many key metabolic reactions. It is a powerful antioxidant that functions within the blood stream and inside cells to promote cell membrane strength and improved immune system function.
Vitamin C is an important antioxidant and free radical scavenger. Free radicals are incomplete atoms or molecules that are the natural by-products of everyday metabolic, detoxification, and immune system processes. These unstable compounds attack nearby molecules in an attempt to become complete. Antioxidants like vitamin C are the body’s natural defense system against free radicals. Antioxidants are molecules that can safely neutralize these harmful substances, helping to promote cell health.
Vitamin C also plays important roles in helping to protect HDL cholesterol, or “good cholesterol” from free radical damage. Healthy amounts of HDL have been shown to produce heart and circulatory benefits.
A Remedy For
This well known source of vitamin C is often recommended for boosting resistance and fighting infections, although scientific proof of its effectiveness is still considered lacking. In addition, Rose Hip seed is recommended for urinary tract infections, although here too, effectiveness awaits further confirmation. Other unverified uses of the seed include treatment of rheumatism, gout, kidney disease, water retention, and sciatica (nerve pain in the lower back and thigh).
What It Is; Why It Works
Named "Dog Rose" for its purported (and discredited) effect against rabies, this prickly climber grows up to 10 feet in length, producing large white or pink flowers. The plant's seed receptacle contains its vitamin C, while the seeds themselves harbor compounds that flush excess water from the body and exert a laxative effect.
ESTER C VITAMIN C with Rose Hips
ESTER C VITAMIN C with CALCIUM:
Cold or Flu Prone
ESTER C VITAMIN C with CALCIUM:
Now get four times the effectiveness of regular C in a less acidic, easy to absorb formula! Keep cold, flu and viral infections at bay. Stay healthy and strong with the power of Ester C!
4 TIMES THE EFFECTIVENESS OF REGULAR C
FIGHT/PREVENT COLDS & FLU
Ideal for PREVENTING & RECOVERING FROM ILLNESS
HIGH ABSORBANT CALCIUM FORMULA
BENEFITS OF USE:A water soluble vitamin that helps formation of collagen for growth & repair of tissue cells, gums, blood vessels, bones & teeth. Helps heal wounds, surgery viral & bacterial infections while promoting the immune system. Good for making colds less severe and of shorter duration.
Heal wounds/injuries faster Assists in red blood cell formation Fights infection
A water soluble vitamin that helps formation of collagen for growth & repair of tissue cells, gums, blood vessels, bones and teeth. Helps heal wounds, surgery, viral and bacterial infections, while promoting the immune system. Good for making colds less severe and of shorter duration.
RESEARCH & STUDIES:There are numerous studies covering the positive benefits and importance of vitamin C to proper body functioning and optimized health.
DOSES & DIRECTIONS:Directions:
Adults, as a dietary supplement , take one or more capsules as desired. Ester "C" is a unique form of Vitamin C containing naturally occurring metabolites. Ester C is gentle and easier on the digestive system, unlike other "C"s which are highly acidic.
INGREDIENTS:Vitamin C 500mg 83%
(from Ester-C calcium ascorbate)
Calcium 50mg 5%
(from Ester-C calcium ascorbate) Citrus Bioflavonoid Complex
Contains no artificial preservatives, coloring, flavors, salt , sugar, starch, wheat or yeast.Each Capsule Contains:
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*These statements have not been evaluated by the Food and Drug Administration.
This product is not intended to diagnose, treat, cure or prevent any disease
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