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Vitamin C (ascorbic acid) is an essential water-soluble micronutrient that has had a dramatic influence on world history. Naval and sea battles have literally been won and lost based on the numbers of the naval forces sick with scurvy (severe Vitamin C deficiency) (R).

Vitamin C is the most effective antioxidant in our blood, due to its water solubility and to the wide range of radical oxygen species (ROS) that it can scavenge (RR1).

It’s great for a whole range of health issues, like high blood pressure, stroke, cancers, atherosclerosis, inflammation and obesity (RR1).

In this article, I will take you through exactly what the science says Vitamin C could do for your health.

Vitamin C Snapshot


  • Helps prevent colds & flu when the body is stressed
  • Very safe
  • A lot of people find high dose vitamin C very good for immunodeficiency, chronic toxin or infectious problems
  • Good anti-oxidant and anti-inflammatory
  • Good for mood
  • Good for skin & bone health
  • Good for a wide array of conditions
  • Good for histamine intolerance
  • High dose vitamin C has anti-cancer effects


  • May cause kidney stones
  • Can cause a bit of nausea or stomach upset
  • Can cause loose stools if too much is taken

Health Benefits of Vitamin C

1) Vitamin C is Vital for Brain Health

As proof of the importance of Vitamin C for brain health, the brain retains Vitamin C at the expense of other tissues during chronic states of deficiency and can uphold concentrations 100-fold higher than other organs, e.g. liver and kidney (R, R1).

Vitamin C plays a role in many important functions in the brain, including reactive oxygen species scavenging, neuromodulation, and the development of new blood vessels (angiogenesis) (R).

Vitamin C modulates neurotransmitter systems of the brain (cholinergic, catecholaminergic, and glutamatergic) (R).

Vitamin C helps the general development of neurons through maturation, differentiation and myelin formation (R).

Vitamin C helps maintain the integrity and function of several processes in the vascular system (R), which helps brain function.

Vitamin C participates in neuronal maturation and myelin formation (the electrically insulating layer around nerves) and is also involved in transmitting signals through the nervous system via neurotransmitters (R).

Vitamin C also prevents neuronal damage (R).

Vitamin C induces the expression of brain-derived-neurotrophic-factor (BDNF), contributing to the defense mechanisms of the brain (R).

2) Vitamin C Improves Mood

Long-term Vitamin C deprivation is linked to nervousness and emotional instability (R).

Vitamin C increases oxytocin release (RR1).

There was a 35% reduction in mood disturbance in hospitalized patients following treatment with Vitamin C (R).

A study found that Vitamin C supplementation does not have large effects on psychological performance, personality or current mental state, in young men (17–29 years) except in cases where supplementation corrects an existing deficiency (R).

3) Vitamin C Lowers Anxiety

Vitamin C reduced anxiety in high school students (R).

Short-term supplementation of Vitamin C was safe and beneficial for reducing anxiety levels in diabetic patients (R).

4) Vitamin C Helps to Combat Depression

Many studies have found that Vitamin C can reduce the severity of depressive disorders in both children and adults, as well as improve the mood of healthy individuals (RR1).

In a trial including depressed shift workers, Vitamin C significantly decreased depression severity (R).

Vitamin C deficient mice are less active (R).

Poor Vitamin C status is associated with increased symptoms of depression following an acute illness in older people (R).

Adequate Vitamin C levels are necessary for the conversion of the neurotransmitter dopamine to norepinephrine, an important hormone in depression and mood swings (R), explaining why patients with Vitamin C depletion have significantly increased symptoms of depression (R).

Vitamin C also increases the effectiveness of antidepressants (R). Patients treated for six months with fluoxetine and Vitamin C showed a significant decrease in depressive symptoms compared to the fluoxetine plus placebo group (R).

5) Vitamin C Reduces Fatigue

Administration of high dose intravenous Vitamin C reduced fatigue in office workers (R).

Vitamin C delays fatigue in rats (R).

6) Vitamin C May Slow Age-Related Cognitive Decline

Chronic low Vitamin C status in humans is associated with neurodegenerative disorders (R).

Higher Vitamin C intake has been associated with a better cognitive function in the elderly (RR1).

Vitamin C levels were significantly lower in elderly people suffering from different kinds of dementia (R).

Vitamin C injected for 3 consecutive days improved learning and memory of aged mice (R).

In rodents, Vitamin C treatments countered the impaired memory caused by chronic sleep deprivation (R).

In animal models of Alzheimer’s disease, Vitamin C improved cognitive function (R).

Supplementation with Vitamin C reduces the risk of Alzheimer’s disease in humans (R).

In the aging brain, Vitamin C deficiency may impair cognitive function through reduced signal transduction, as well as amyloid β deposition resulting in a generation of reactive oxygen species and increased risk of Alzheimer’s disease (R).

7) Vitamin C May Improve Thyroid Activity (in low doses)

In rats, low doses of Vitamin C stimulate the thyroid, whereas high doses inhibit thyroid activity (R).

8) Vitamin C Improves Blood Pressure

Vitamin C significantly lowered systolic and diastolic blood pressure in patients with mild-to-moderately high blood pressure (R).

9) Vitamin C is Beneficial for Blood Flow

High-dose Vitamin C can prevent or restore impaired blood flow caused by reactive oxygen species (ROS), preserve the integrity of the blood vessel barrier, and strengthen antibacterial defenses (R).

Vitamin C helps to prevent blood vessel dysfunction, stimulate collagen synthesis, and enhances cell proliferation of blood vessel cells (R).

Vitamin C plays a positive role in reversing the earliest stages of hardening of the arteries (R).

Vitamin C deficiency may result in decreased blood vessel integrity, e.g. through decreased NOS generation and impaired synthesis of mature collagen. This might lead to increased plaque formation and incidence of stroke (R).

10) Vitamin C May Combat Cancer & Ease Cancer Treatment

A number of reports suggest that high-dose Vitamin C has anticancer effects (R).

High-dose Vitamin C is more toxic to cancer than it is to normal cells and induces death of various types of cancer cells including mesothelioma, pancreatic, and leukemia cells (R).

High-dose Vitamin C suppresses tumor growth in animal models and tissue culture studies (R).

High dietary Vitamin C reduces gastric cancer risk (R).

Higher dietary Vitamin C intake before breast cancer diagnosis increased the chances of survival. This association was strongest among women aged over 65 (R).

Men with low Vitamin C levels have a 62% higher risk of dying from cancer (R).

Vitamin C lowers pain and reduces the toxicity of some anticancer agents by reducing oxidative stress (R).

Intravenous Vitamin C alleviates a number of cancer- and chemotherapy-related symptoms, such as fatigue, insomnia, loss of appetite, nausea, and pain (R).

Vitamin C can reduce pain by 55% in radiotherapy patients with bone cancer (R).

Vitamin C can improve the quality of life of cancer patients, including reduced pain and the need for painkillers, both in the presence and absence of chemo- and radiotherapy (R).

11) Vitamin C Protects the Lungs From Oxidative Stress

Levels of vitamin C in the lungs are up to 30 times higher than in the blood.

Vitamin C gets consumed while it protects against oxidants, indicating that even a single dose of vitamin C can be effective in protecting against acute increases in oxidative stress in the lungs (R).

12) Vitamin C Boosts Immunity

Many infections lead to reduced Vitamin C levels (R).

Vitamin C increases the functioning of various white blood cell types and decreases the replication of viruses (RR1).

Vitamin C reduces the duration and severity of the common cold (R1, R2R3).

Vitamin C reduces the incidence of colds at times of extreme physical stress (RR1).

Vitamin C reduces the incidence of pneumonia (R).

Vitamin C decreased the duration and severity of respiratory infections in male swimmers, but not in females (R).

Vitamin C eradicates H. pylori infection in 30% of patients treated (R).

13) Vitamin C Helps Reduce Inflammation

Vitamin C reduces inflammation by lowering inflammatory cytokines (R1R2R3).

Vitamin C can alleviate inflammation in patients with obesity, diabetes or high blood pressure (R).

High dose intravenous vitamin C can reduce inflammation (hs-CRP & inflammatory cytokines: IL-1α, IL-2 (Th1 Cytokine), IL-8, TNF) in cancer patients (R).

As mentioned above, Vitamin C can inhibit obesity-related inflammation, and therefore prevent obesity-related inflammatory diseases (R).

Vitamin C reduced oxidative stress and inflamatory response to artificially induced inflammatory bowel disease (IBD) (reduced inflammatory cytokines, (MPO) and malonaldehyde (MDA) activities) (R).

14) Vitamin C Lowers Histamine Levels

When Vitamin C levels decrease, blood histamine levels increase (R).

Oral and intravenous administration of vitamin C results in a reduction of blood histamine levels (RR1).

Therefore, vitamin C is good for people with histamine intolerance.

15) Vitamin C Protects the Gut

Vitamin C can improve gut tolerability to aspirin and other non-steroidal anti-inflammatory drugs (NSAIDs) (R).

Vitamin C saves mice from irradiation-induced gut damage that is usually lethal (R).

16) Vitamin C is Beneficial for Mitochondria

Vitamin C stimulates mitochondrial function, by decreasing ROS generation, stimulating the activity of manganese superoxide dismutase/SOD2 and glutathione peroxidase, and by modifying the activity of the electron transport chain (R).

Vitamin C protects the mitochondrial membrane and DNA against oxidative damage (R).

17) Vitamin C is Beneficial for Exercise & Recovery

Vitamin C increases physical performance and decreases oxidative stress – but only in those with an already low Vitamin C status (R).

Vitamin C decreases the levels of free radicals generated during exercise and attenuates oxidative stress (R).

Vitamin C prevents exercise-induced muscle damage, immune dysfunction, and fatigue (RR1).

However, it is important to note that reactive oxygen species may actually control beneficial training adaptations that high doses of Vitamin C prevent from occurring (RR1).

18) Vitamin C Combats Weight Gain

People with adequate levels of Vitamin C burn 30% more fat during moderate exercise compared to subjects with low Vitamin C levels (R).

Vitamin C lowers the fat accumulation of fat cells (R).

Indeed, Vitamin C supplementation has been associated with body weight reduction and a massive reduction in the number of fat cells in rats and guinea pigs (R).

Eight weeks of Vitamin C supplementation in a cafeteria model of obesity protected rats against diet-induced fat storage and excess leptin (R).

Low Vitamin C levels are related to a high waist-to-hip ratio (R).

Vitamin C has been associated with a lower prevalence of obesity and with the prevention of weight gain in a 3-year follow-up study in adults (R).

See other tips for weight loss.

19) Vitamin C is Beneficial for Diabetics

Vitamin C administration improved whole-body glucose disposal and non-oxidative glucose metabolism (R).

Reductions in glucose and insulin levels were much better in rats fed a high-fat diet supplemented with Vitamin C for 2 weeks, compared to those fed high fat alone (R).

Vitamin C protects against diabetic blindness, improves high-density lipoprotein-cholesterol (HDL-c), and improves blood vessel function (R). 

Vitamin C may benefit patients with type 2 diabetes by decreasing blood glucose and lipids (R).

Vitamin C inhibits production of cortisol/glucocorticoids which raise blood sugar (R).

20) Vitamin C Facilitates Collagen Production

Stabilization of collagen by Vitamin C is critical to forming the connective tissue framework of the entire body; including skin, bones, cartilage, tendons, ligaments, and blood vessels (R).

The final steps of collagen production depend on Vitamin C (Vitamin C acts as an electron donor in the hydroxylation of procollagen prolyl and lysyl residues) (R).

Vitamin C deficiency disrupts collagen maturation, leading to an impaired integrity of the blood vessel wall, hemorrhage, and cerebral bleedings in mice (R).

21) Vitamin C is Good for Your Bones

Vitamin C is essential for normal bone development (R).

In humans, there is a positive relationship between Vitamin C levels and bone health, indicated by bone mineral density, fracture probability, and bone turnover markers (R).

Vitamin C-deficient animals show impaired bone health and decreased bone formation. Vitamin C supplementation was able to prevent bone loss in several animal models (R).

Vitamin C deficiency plays an important role in spontaneous bone fracture by inhibiting bone cell differentiation and promoting transition of bone cells into fat cells in mice (R).

Daily use of Vitamin C supplements, along with estrogen replacement therapy and calcium supplements, can help increase bone mass in postmenopausal women (RR1).

Higher Vitamin C intakes were associated with a lower risk of osteoporosis in Korean adults aged over 50 with low levels of physical activity (R).

In addition to stabilizing collagen in bone matrix (R), Vitamin C also scavenges free radicals detrimental to bone health (R).

22) Vitamin C is Great for Your Skin

Vitamin C contributes to the maintenance of healthy skin (R).

Applied to the skin, topical Vitamin C is highly efficient as a rejuvenation therapy, inducing significant collagen synthesis with minimal side effects (R).

Topical Vitamin C can partially correct structural changes associated with the aging process (R).

Vitamin C is an effective short-term treatment for melasma and post-inflammatory hyperpigmentation (R).

23) Vitamin C May Protect From Stroke

Brain Vitamin C concentrations increase during ischemia (inadequate blood supply) (R).

In rodents and primates, Vitamin C reduced the area of brain deprived of blood supply during a stroke (R).

In humans, higher Vitamin C levels are associated with a lower likelihood of stroke (R).

24) Vitamin C is Beneficial for Smokers

People who smoke have lower levels of blood and cellular Vitamin C (and vitamin E) (R).

Vitamin C supplements of 500 mg twice daily for two weeks were sufficient to normalize the disappearance rate of vitamin E in smokers (R).

25) Vitamin C Increases Frequency Of Sex

In one study, high-dose Vitamin C improved mood and increased the intercourse frequency of 42 healthy adults (R).

26) Vitamin C Combats Sea Sickness

Histamine is a potential causative agent of seasickness. People exposed to waves show increases in histamine levels.

Vitamin C is effective in suppressing symptoms of seasickness, particularly in younger individuals (R).

27) Vitamin C Reduces Toxin Burden

Vitamin C reduces the amount of persistent organic pollutants (POPs) in the human body (R).

28) Vitamin C Improves Sperm Quality

Vitamin C improved sperm motility and structure in men (R).

29) Vitamin C is Beneficial During Pregnancy

Some studies found that babies weighed more when they and their mothers had higher blood Vitamin C levels (R, R1).

In the developing brain of a baby, neuronal density and maturation are compromised by Vitamin C deficiency, giving rise to decreased brain volume (R).

An absence of Vitamin C is detrimental to survival in newborn mice. Furthermore, deficiency around birth reduced hippocampal volume and neuron number and cause decreased spatial cognition in guinea pigs (R).

30) Vitamin C is Beneficial After Surgery

Blood Vitamin C concentrations fall after surgery, and further decrease in patients under surgical intensive care, due to an increased demand caused by increased oxidative stress (R).

In uncomplicated gastrointestinal surgery, continuous administration of Vitamin C reduced post-operative oxidative stress (R).

Post-operative atrial fibrillation (abnormal heart rhythm) was prevented after cardiac surgery by vitamin C supplementation (R).

31) Vitamin C and Hormones

Vitamin C is associated with higher levels of progesterone and follicle-stimulating hormone in healthy premenopausal women (R). 

32) Vitamin C Increases Nutrient Availability

Vitamin C enhances the bioavailability of other nutrients, such as vitamin E and non-heme iron, which may enhance the health effects of Vitamin C-containing foods (R).

33) Vitamin C Lowers Cortisol

Vitamin C inhibits production of cortisol/glucocorticoids (R), which signifies that it lowers people’s stress response.


Vitamin C is extremely important as an antioxidant owing to its ability to neutralize oxygen and nitrogen-based radicals, and because it also recycles both vitamin E and BH4 (tetrahydrobiopterin), which have key antioxidant and enzyme cofactor functions (R).

Vitamin C contributes to many important enzyme reactions, including those leading to the synthesis of norepinephrine, carnitine, cholesterol, amino acids, and several peptide hormones (R).

Because of its structural similarity to glucose, Vitamin C can replace glucose in many chemical reactions, and it can prevent the non-enzymatic glycosylation of proteins (R).

How Much Vitamin C Do You Need (Dosage)

Most animals can produce Vitamin C from glucose in the liver. However, humans have lost this ability and so an adequate, regular dietary intake is essential (R).

Vitamin C is needed in relatively high quantities since it is not retained nor accumulated in the body and the excess is immediately eliminated through urine (R).

Current USA RDA for Vitamin C is 75 mg/day for women and 90 mg/day for men (R).

Amounts up to 125 mg/day are recommended for pregnant or lactating women, and an additional 35 mg per day to account for increased oxidative stress and vitamin C turnover in smokers (R).

The RDA for a given nutrient is calculated based on avoiding deficiency. Several sources now suggest that RDA should be as much as double the currently advised 75–125 mg per day depending on age, gender, pregnancy and smoking habits (R).

At Vitamin C intakes above 60 mg/d, vitamin C begins to appear in the urine. However, intakes of 250 mg/d and higher (approximately 400 mg/day) are required to saturate vitamin C concentrations in the blood and white blood cells (RR1).

The ‘tolerable upper intake level’ is stated to be 2 g/day for adults but many people are fine taking larger doses (see cautions below) (R).

Patients with pneumonia can take up to 100 g/day of Vitamin C without developing diarrhea, because of the changes in Vitamin C metabolism caused by the infection (R).

When the daily dose is increased from 200 to 2500 mg the blood concentration increase only from approximately 12 to 15 mg/L due to kidney clearance. Hence why some state that there is no justification for megadoses of vitamin C in healthy individuals (R).

Deficient Blood Levels of Vitamin C

Vitamin C is absorbed from the intestinal lumen and kidney tubules and then distributed throughout the organism by the bloodstream (R).

The uptake and distribution of Vitamin C in the body is under close control and primarily regulated by tissue-specific, sodium-dependent Vitamin C co-transporters (SVCT) 1 and 2, which transport Vitamin C in exchange of sodium (R).

Generally, blood Vitamin C concentration of:

  • <11 μM is considered to be deficient
  • 11–28 μM is depleted or marginally deficient
  • 28–40 μM is adequate
  • > 40 μM is optimal (R).

22% of U.S. adults are believed to have below adequate Vitamin C status (blood concentrations < 28 µmol/L), and about 6% of the adult population is classified as Vitamin C deficient (<11 µmol/L) (R).

Organs With Highest Vitamin C Need

Vitamin C is found in high concentrations in the pituitary, adrenals, and the ovaries, but muscle, brain, and liver contain the largest stores of this vitamin (R).

Symptoms of Vitamin C Deficiency

Early indications of Vitamin C deficiency are fatigue, malaise, depression, and they may manifest as a reduced desire to be physically active (R).

Scurvy (pathological Vitamin C deficiency) leads to blood vessel fragility resulting in hemorrhage, as well as connective tissue damage due to failure in collagen production, often leading to loss of teeth and tendon rupture. At worse, scurvy can lead to death (RR1).

Clinical scurvy can be avoided with intake of as little as 10 mg of Vitamin C per day (R). However, mild Vitamin C depletion has been observed in 10-30 % of the presumed healthy population (RR1).

Factors That Cause Low Vitamin C

Non-supplementing men aged 20–49 are particularly at risk of poor Vitamin C status (R).

Vitamin C concentrations decrease with age (R).

Patients receiving kidney dialysis are prone to deficiency of Vitamin C (R).

Schizophrenic patients tend to have significantly lower levels of blood Vitamin C (R).

Subgroups at particular risk of Vitamin C deficiency are communities of low socio-economic status, smokers, elderly, pregnant women, and children with poor nutritional status (R).

blood Vitamin C levels differ according to polymorphisms of SVCT2 and SVCT1 (R).


It is important to note that reactive oxygen species may actually control beneficial training adaptations that high doses of Vitamin C prevent from occurring (RR1).

Supplemental intakes greater than 500 mg per day may cause kidney stones in those that are prone to them (R).

Vitamin C can enhance iron absorption by maintaining iron in ferrous (Fe2+) rather than ferric (Fe3+) state. This is beneficial in some patients (such as those with gut issues and low ferritin) but not in those that suffer from medical conditions that cause iron overload (R).

High intake of Vitamin C exerts a pro-oxidant effect by its interaction with metal ions via a number of established RONS generating systems. Caution should be exerted regarding surplus vitamin C intake for patients with chronic inflammatory diseases or atherosclerosis (RR1).

Some research has found that combining high-dose Vitamin C and vitamin E supplementation can be harmful, even though the harm may be restricted to selected groups among smokers (R).

Vitamin C intake might be responsible for high serum uric acid levels, based on a study in Korean rural communities (R).

Higher uric acid can be a good thing, such as improving productivity and intelligence, but it can cause problems if you’re prone to kidney stones or gout.

High Vitamin C intake from supplements was associated with an increased risk of cardiovascular disease mortality in postmenopausal women with diabetes (R).

Natural Sources Of Vitamin C

Screen Shot 2016-06-06 at 16.41.32

As shown in the picture above, you can find variable amounts of Vitamin C in many fruits and vegetables. Personally, to get a truly therapeutic dose and to be able to measure exactly how much Vitamin C I am getting daily (food levels vary), I choose to supplement.

Most comparative bioavailability studies in humans have shown no differences between synthetic and natural Vitamin C, regardless of the subject population, study design or intervention used (R).

Buy Vitamin C (Ascorbic Acid) Supplement

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  • Sravana

    Great information on everything that one requires to know about Vitamin C. So far, I have only known that Vitamin C helps in boosting immune system. A perfect guide to the ones who yearn to know every piece of information on Vitamin C.

  • ted

    I’ve been interested in vitamin C for many years because it is so important to human health and well-being. What I’ve learned from a chemist friend of mine (he has a PhD from Stanford) plus extensive reading on this subject, is that most vitamin C you buy is ascorbic acid, a synthetic mirror image of the original molecule. Thus, many of the studies on this very important vitamin are somewhat flawed. They are not studying the natural form, which, no doubt has unique and important effects on the body.

    I eat lots of foods that have natural vitamin C and I also look for supplements that are derived from foods, not chemistry labs. I’ve found that when I consume a lot of natural C in my diet, I do not get colds or flu and in general my immune system works great (wounds heal quickly, etc.).

  • Julia

    Have you thought of increasing your calcium intake? I always combine dairy with high oxalate foods to negate the oxalic acid absorption. E.g. spinach with cheese. This has kept any gout-related symptoms at bay for me.

    1. Azzi

      You are saying right.

  • afm2105

    Source R2 is misanalyzed. That study found that adding Vitamin C did NOHING for treating major depression in adults who also took a prescription drug for major depression.

    1. Biljana N

      Mistakes sometimes happen. Thank you for helping us correct them. The reference was removed.

  • Joyce

    What do people with high oxalates do about using Vitamin C. I have been told it is contraindicated if you have this condition but I need Vitamin C to help repair other issues. Thanks.

  • Cas

    Is there a non-GMO buffered Vitamin C powder that you recommend? Have sensitive stomach/ gut lining problems so would be reluctant to try ascorbic acid. Thanks.

    1. Nattha Wannissorn

      Life Extension: IHERB or AMZN

      ~Team SelfHacked

  • dago8231Michael

    “Caution should be exerted regarding surplus vitamin C intake for patients with chronic inflammatory diseases or atherosclerosis (R, R1).”

    Sorry but that’s not correct, contradicting Dr Matthias Rath and Linus Paulin’s groundbreaking research on the treatment and reversal of atherosclerosis using high dose Vitamin C, Lysine and Proline (Pauling Protocol). This treatment has been conclusively shown to work in the treatment of heart disease but also in cancer treatment when green tea extract is added.

    1. Betsy

      Your additional information regarding the green tea extract doesn’t prove Joe’s statement to be wrong, it provides information about what precautionary measure to take. Thank you for that, I hadn’t read that about the green tea extract. Do you suppose the EGCG and quercetin deal with copper or iron radicals? If you find an expansion, I would appreciate it.

  • Fred Pauser

    The author is clearly well-intensioned. He gets a lot right, but also gets some important points WRONG! For example:

    1) “High intake of Vitamin C exerts a pro-oxidant effect by its interaction with metal ions via a number of established RONS generating systems. Caution should be exerted regarding surplus vitamin C intake for patients with chronic inflammatory diseases or atherosclerosis.”

    > Dr. Thomas Levy seems to have missed that point in his book that SPECICALLY addresses heart disease/atherosclerosis. He recommends high doses of C as the MOST IMPORTANT item of his protocol against coronary atherosclerosis. I followed his protocol and it CURED me!

    > Dr Levy elsewhere points out that Vit C is always an antioxidant – but when used in high doses against cancer it may be involved in a complex reaction resulting in a pro-oxidant effect in the process of killing cancer cells. (This from my memory – check it out.)

    2) “Supplemental intakes greater than 500 mg per day may cause kidney stones in those that are prone to them.”

    > There are at least 5 types of kidney stones. There is a rare type in which high doses of C might be a factor, but the chance is very slim. Of the several types of kidney stone, there are at least 2 types which vit C helps to dissolve/eliminate.


    > The author, Jon, shows exactly what C supplement he takes himself – unfortunately it contains 145 mg of calcium for every 4,000 mgs of C – too much calcium. As Dr Levy points out in his book, Death by Calcium, no one should take any calcium as a supplement unless blood tests indicate the need!!!!

    Dr. Thomas Levy spent years learning about C and has written more than one book specifically about Vitamin C. Jon needs to read some of Dr. Levy.

  • Thomas Johnson

    I wouldn’t put “Can cause loose stools if too much is taken” as a con since this is the method of titration discovered by Cathcart. There are also a good number of people using this effect (diarrhea) as a way of “flushing” their digestive tract. Also, you say it may cause kidney stones, well, it may not, in fact, it may help prevent them. It seems like the vast majority of negative assertions about vitamin C are are these kind of vague conjectures with little or no evidence that it happens in humans.

  • Betsy Swope

    Very nice article, Joe. Thank you

  • optimumpremonition2

    Ascorbic acid causes copper deficiency. Whole food vitamin C does not.

    1. Joseph M. Cohen

      How do you know whole food vitamin C does not?

      Most people get too much copper anyway.

      1. pamojja

        Interesting talk about ‘Safe Detox Methods’ by Dr. Russell Jaffe: – After minute 4-5 how ascorbic acid allegedly binds in the following order: 1) Lead , 2) Mercury, 3) Arsenic, 4) Cadmium, 5) Nickel, 6) Beryllium, 7) Calcium, 8) Copper, 9) Magnesium and 10) Zinc. About 10 mcg of toxic metals chelated with the first gram of ascobic acid taken a day.

        It’s my experience from 7 years ingesting about 22 g/d of ascorbic acid and regular HTMAs (hair tissue mineral analysis) that Lead, Arsenic and Beryllium stayed approx. the same, Cadmium and Nickel halved, Mercury reduced to a quarter (all within normal ranges). Calcium normalized from too low, Copper and Zinc in my case is very responsive to supplementation (ie. 2 mg supplemented Cu gives too high levels, below 1mg normalizes; need 50 mg/d Zn to stay normal). Only Mg-deficiency has been seriously aggravated by high dose ascorbic acid in my case, necessitating mega-dosing of Mg to avoid pain-full muscle cramps. Despite searching on the Internet, didn’t found even one other high-dosing vitamin C individual with this deleterious side-effect. Therefore seems very individual, common sense to check your levels with anything mega-dosing long-term, and do balance with what’s needed.

    2. Betsy Swope

      In reply to Optimumpremonition2’s comment and the study that he/she linked, it’s difficult to say if lowering of ceruloplasmin was a bad or good thing because the study doesn’t show before and after levels, only mentions that it drops. It’s possible that ceruloplasmin levels dropped due to a correction of some sort of inflammation.

      Here is a list of conditions that would cause raised ceruloplasmin. If Vitamin C actually corrected even in part the condition, it would make sense that ceruloplasmin would lower.

      Greater-than-normal ceruloplasmin levels may indicate or be noticed in:

      copper toxicity / zinc deficiency
      oral contraceptive pill use[12]
      acute and chronic inflammation (it is an acute-phase reactant)
      rheumatoid arthritis
      Alzheimer’s disease[14]
      Obsessive-compulsive disorder[16

  • CK

    I’m curious about the GMO factor as well.

  • Paul

    I get about 600 mg of vitamin C in my food alone. I will NOT supplement with vitamin C because it cancels out one of the important benefits of exercise: the production of endogenous antioxidants which are more powerful than those found in either foods or supplements. I wish you would have expounded on this fact more instead of briefly mentioning them in the first two references in your CAUTION section: . and

    1. Joseph M. Cohen

      So don’t take it around the time of exercising

  • anna

    It’s not hard to make your own lipo C using an ultrasonic jewelry clean to encapsulate the c into the lecithin. There is a yahoo group of extremely smart zealots who are big on making their own.
    I have made my own and felt the benefit from it.

    1. user1

      “Is “homemade” liposome-encapsulated vitamin C good?

      If the reader thinks I will say anything to help LivOn and hurt the competition, then there is not much point in reading further. If someone wants to be cynical about my intentions, that’s their right, however misguided they might be.

      All I can say is that the simple ultrasonic treatment of lecithin and vitamin C does not make liposomes. I have reviewed the sophisticated testing of two different such preparations. Both of them: zero liposomes.

      However, the ultrasonic treatment does results in a legitimate emulsion, which is absorbed much better than just regular vitamin C. However, that is just absorption into the blood, not enhanced uptake inside the cells, as with liposomes.

      So, such a preparation can certainly help the sick patient, and probably more effectively than just regular vitamin C can help.

      It is important to realize, however, that the critically ill patient who continues to worsen while taking a homemade preparation has not yet had the benefit of liposome enhanced vitamin C uptake into cells, only the self-imposed illusion/delusion of that benefit. The enhanced intracellular uptake of the vitamin C, a critical unique aspect of a good liposome supplement, never occurs with the homemade preparation.

      Some other companies make real liposome preparations, some do not. I am only in a position to say that LivOn does. The clinical effects that I have witnessed over years now continue to amaze me. But, buyer beware.

      Of note, a liposome preparation also does not come in a dry capsule, however, convenient this may be to take versus a thick, oily preparation.”

      1. pamojja

        quote: “All I can say is that the simple ultrasonic treatment of lecithin and vitamin C does not make liposomes. I have reviewed the sophisticated testing of two different such preparations. Both of them: zero liposomes.”

        I was of a similar opinion that homemade only created an emulsion. Just found out Livon Labs purchased a patent on making low-tech homemade Lipo-C. Why on earth would they waste any money on such a patent, if they already have proven without a doubt that homemade isn’t true liposomal?

        and find the bought patent there:

        quote: “5. Apr. 2013
        AS Assignment
        Effective date: 20110113

      2. anna burns

        User1, thanks for your reply and opinions. Maybe you will share with this group the sophisticated test results that you made mention of. It seems that you would not mind
        doing that since you brought it up. I would be really interested to view them.

  • pamojja

    Thanks for this summary.

    quote: “When the daily dose is increased from 200 to 2500 mg the blood concentration increase only from approximately 12 to 15 mg/L due to kidney clearance. Hence why some state that there is no justification for megadoses of vitamin C in healthy individuals (R).”

    Though only a diseased individual myself 😉 actually tested 23,4 mg/L (5-15 range) on regular megadoses (~22 g/d for 7 years).

    Also consider this study, quote: “We studied 139 consecutive consenting non-diabetic patients in an oncology clinic. The patients had been encouraged as part of their treatment to supplement AA. Self-reported daily intake varied from 0 to 20 g/day. The plasma AA levels ranged from 11.4 to 517 µmol/L and correlated well with the reported intake.” (divide by 5,678 to convert to mg/dl) (the original paper is now behind a pay-wall)

    My kidneys improved from CKD Stage 1.
    Still have difficulty keeping iron up in a healthy range.
    Symptoms of arteriosclerosis (intermittent claudication) have disappeared.
    Uric acid is low, guess due to Ascobic acid doing its job as antioxidant.
    Beside many oder side-benefits, not indicated under “Caution”.

    1. pamojja

      On the other hand, very low blood levels can be expected without supplementing, but common periodontitis, or even vodka and cigarettes:

      quote: “The mean plasma vitamin C concentration was higher (P < 0.001) in Finnish subjects (mean ± standard deviation, 4.5 ± 2.8 mg/liter) than in Russian subjects (1.4 ± 1.8 mg/liter)."

      quote: "Patients with pneumonia can take up to 100 g/day of Vitamin C without developing diarrhea, because of the changes in Vitamin C metabolism caused by the infection (R)."

      The different metabolism is referenced to Cathcart: Vitamin C, titrating to bowel tolerance. One article explaining how in his view Vitamin C works in astronomic doses here:

      quote: "Most vitamin C is made from GMO corn or soy."

      True, but just as in the recent finding that in plant extracts there aren't any genetic traces found, for example in an ginkgo biloba extract, similarly there can't be any expected in pure C6H6O6H2 powder.

  • L.A.

    Most vitamin C is made from GMO corn or soy. I have a very difficult time finding organic sources. The only one I found organic came from the U.K. Are you concerned at all about the sources of vitamin C and whether is was made with harmful pesticides or GMO?

    1. Alan

      You can look for Quali-C vitamin C. They are made from non-GMO corn in Scotland.

      1. Alan

        Hi Joe, have you tried PureWay-C before? Apparently they are non-GMO too.

    2. anna burns

      Someone on this thread commented about having trouble finding non GMO vitamin C. I have a container of non GMO
      vitamin C powder that I purchased from Carlsons.

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