Science Current Events | Science News | Brightsurf.com
 
Email a Friend Send to a friend
Printer Friendly Print High-dose vitamin C as a cancer therapy

High-dose vitamin C as a cancer therapy

March 28, 2006

Although early clinical studies conducted by Linus Pauling showed that high-dose vitamin C, given by intravenous and oral routes, may improve symptoms and prolong life in patients with terminal cancer, no benefits for cancer patients were seen when vitamin C therapy was administered orally in double-blind placebo-controlled studies at the Mayo Clinic. Since then, high doses of vitamin C have been used only as an "alternative" therapy to standard cancer treatment. However, recent evidence shows that intravenous administration of the maximum tolerated dose of vitamin C produces plasma concentrations about 25 times higher than when the vitamin is administered orally. At concentrations above 1000 mmol/L - which can only be achieved by the intravenous route - vitamin C is toxic to some cancer cells but not to normal cells in vitro.

Padayatty and colleagues report on 3 well-documented cases of advanced cancers, confirmed by histopathologic review, where patients had unexpectedly long survival times after receiving high-dose intravenous vitamin C therapy. They assessed the clinical details of each case in accordance with National Cancer Institute (NCI) Best Case Series guidelines, and found that the case reports indicate that the role of high-dose intravenous vitamin C therapy in cancer treatment should be reassessed.





Canadian Medical Association Journal



Related Vitamin C Current Events and Vitamin C News Articles Vitamin C Current Events and Vitamin C News RSS Vitamin C Current Events and Vitamin C News RSS
Fruit juices contain more vitamin C than their labels indicate
A team of pharmacists from the University of Santiago de Compostela (USC) has established that the levels of vitamin C in many fruit juices and soft drinks are far higher than those indicated on their labels by the manufacturers.

First global scientific conference supporting UN efforts to curb desertification opens in Argentina
As climate change negotiators continue to skirt the role of agricultural land use in reducing greenhouse gas emissions, top scientists working on land management in the world's vast dry areas will gather this week in Buenos Aires, Argentina, determined to make the case that thwarting desertification in drylands is viable and also critical to the success of a new climate deal.

Green tea component may help preserve stored platelets, tissues
In two separate studies, a major component in green tea, epigallocatechin-3-O-gallate (EGCG), has been found to help prolong the preservation of both stored blood platelets and cryopreserved skin tissues.

Model backs green tea and lemon claim, lessens need to test animals
An animal study at Purdue University has shown that adding ascorbic acid and sugar to green tea can help the body absorb helpful compounds and also demonstrates the effectiveness of a model that could reduce the number of animals needed for these types of studies.

UAB/Southern Research Scientists Discover How Flu Damages Lung Tissue
A protein in influenza virus that helps it multiply also damages lung epithelial cells, causing fluid buildup in the lungs, according to new research from the University of Alabama at Birmingham (UAB) and Southern Research Institute.

Melon research sweetened with DNA sequence
People smell them, thump them and eyeball their shape. But ultimately, it's sweetness and a sense of healthy eating that lands a melon in a shopper's cart.

Many breast cancer patients take high doses of antioxidants despite possible consequences
A new study finds that many women with breast cancer take antioxidant supplements while undergoing cancer treatment, even though the consequences of doing so are unknown.

Many breast cancer patients take high doses of antioxidants despite possible consequences
A new study finds that many women with breast cancer take antioxidant supplements while undergoing cancer treatment, even though the consequences of doing so are unknown.

New fuel cell catalyst uses 2 metals
Material scientists at Washington University in St. Louis have developed a technique for a bimetallic fuel cell catalyst that is efficient, robust and two to five times more effective than commercial catalysts.

Research suggests vegetable juice may help people with metabolic syndrome lose weight
Drinking at least one glass of low sodium vegetable juice daily may help overweight people with metabolic syndrome achieve better weight loss results.
More Vitamin C Current Events and Vitamin C News Articles
Nature Made Vitamin C, 1000 mg, Premium Tablets, Value Size, 300 premium tablets

Nature Made Vitamin C, 1000 mg, Premium Tablets, Value Size, 300 premium tablets
by Nature Made

USP-Verified Dietary Supplement. Recommended by pharmacists. Antioxidant - Helps boost the immune system. Vitamin C helps neutralize free radicals and helps iron get absorbed in the body. UPS has tested and verified ingredients, potency and manufacturing process. USP sets official standards for dietary supplements. No artificial colors. No artificial flavors. No preservatives. No chemical solvents, yeast or gluten. (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).

Now Foods Vitamin C-1000 W/ Rose Hips- Sustained Release, 250 Tablets

Now Foods Vitamin C-1000 W/ Rose Hips- Sustained Release, 250 Tablets
by NOW

In today's hectic lifestyle, our bodies are constantly depleting the nutrients we rely on to help us perform at our pinnacle. Perfect for the active professional, athlete or individual with sensitive systems, NOW Vitamin C 1000 mg Sustained Release delivers gradual amounts of this powerful antioxidant rendering consistent cell protection and free radical fighting throughout our busy days.



* Picture may be of different size or flavor

Vitamin C W/Rose Hips 1,000 mg 250 Tabs

Vitamin C W/Rose Hips 1,000 mg 250 Tabs
by Swanson Premium Brand

A high-potency source of vitamin C, fortified with rose hips! One of nature's richest sources of vitamin C, rose hips contain bioflavonoids that promote the vitamin's absorption and enhance its antioxidant potency. Each tablet supplies 1000 mg of vitamin C with 100 mg of rose hips.

Now Foods C-1000 Capsules, 250 Capsules

Now Foods C-1000 Capsules, 250 Capsules
by NOW

Vitamin C is perhaps the most popular vitamin known to man. It is consumed in a supplemental form by millions of people across the world for its antioxidant properties, which are well-documented in medical research. C-1000 provides a potent dosage of this key vitamin and is blended with Bioflavonoids, which help promote the function of Vitamin C,.



* Picture may be of different size or flavor

Nature Made Vitamin C Supplement Caplets, 500 mg, 100-Count Tablets (Pack of 3)

Nature Made Vitamin C Supplement Caplets, 500 mg, 100-Count Tablets (Pack of 3)
by Nature Made

Nature Made Vitamin C 500mg 3-pack/100-count

Nature Made Vitamin C Supplement Tablets, 1000 mg, 100-Count Bottles (Pack of 3)

Nature Made Vitamin C Supplement Tablets, 1000 mg, 100-Count Bottles (Pack of 3)
by Nature Made

Supplement. USP verified. Recommended by pharmacists. Antioxidant helps boost the immune system. Vitamin C helps neutralize free radicals and helps iron get absorbed in the body. No artificial colors. No artificial flavors. No preservatives. No chemical s

Nature Made Time-Release Vitamin C Supplement Tablets with Rose Hips, 1000 mg, 60-Count Bottles (Pack of 3)

Nature Made Time-Release Vitamin C Supplement Tablets with Rose Hips, 1000 mg, 60-Count Bottles (Pack of 3)
by Nature Made

Nature Made Vitamin C 1000mg w/ Rose Hips TR. 3-pack/60-count

Emergen-C Vitamin C Fizzy Drink Mix, 1000 mg, Lemon-Lime, 0.3 Ounce Packets (Pack of 36)

Emergen-C Vitamin C Fizzy Drink Mix, 1000 mg, Lemon-Lime, 0.3 Ounce Packets (Pack of 36)
by Emer'gen-C

A dietary supplement. Super energy booster! 100 mg Vitamin C as seven mineral ascorbates. 32 Active mineral complexes and B Vitamins. A powerful antioxidant. Electrolyte balanced. (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.) Just add water. Fits in a shirt pocket or purse. Made in the USA.

Kirkland Signature Chewable Vitamin C 500 mg Tangy Orange Taste - 500 Tablets

Kirkland Signature Chewable Vitamin C 500 mg Tangy Orange Taste - 500 Tablets
by Kirkland Signature

Chewable Vitamin C enhances the Immune system and protects the body's cells from potential oxidative damage. Chewable tablets are ideal for individuals who may have difficulty swallowing solid tablets.

Kirkland Vitamin C with Rose Hips and Citrus Bioflavonoid Complex (1000 mg), 500-Count Tablets

Kirkland Vitamin C with Rose Hips and Citrus Bioflavonoid Complex (1000 mg), 500-Count Tablets
by Nutritional Products International



© 2009 BrightSurf.com