Vitamin C is a water-soluble vitamin that is found in many fruits and vegetables. Vitamin C plays an important role in collagen formation, and it also functions as an antioxidant, boosting the immune system. Although you need to consume vitamin C every day, too much can be toxic. The tolerable upper limit is the maximum amount of a vitamin you can take each day without experiencing any ill effects. According to The Merck Manuals Online Medical Library, the tolerable upper limit for vitamin C is 2,000 mg per day, or 2 g. Anything above this amount could be considered as an overdose. Common side effects of vitamin C overdose involve the digestive tract. If you consume more than 2,000 mg of vitamin C, you may develop severe gastrointestinal irritation and diarrhea. In addition to significant discomfort, extended episodes of diarrhea or vomiting can lead to dehydration, causing extreme thirst, fatigue, low urine output and reduced blood pressure. Diarrhea and vomiting can also cause additional mineral imbalances in the body.
Vitamin C is broken down by the body into a substance called oxalate. Some oxalate is secreted in urine, however high urinary oxalate levels may cause formation of deposits, known as kidney stones. High vitamin C intake is associated with an increased risk of oxalate kidney stones -- accounting for approximately 80 percent of all kidney stones. Hemochromatosis is a condition caused by excess iron build-up in the body. This condition is commonly inherited, and most often affects the liver, heart and pancreas. Vitamin C helps the body absorb iron. Although vitamin C overdose does not cause hemochromatosis, it can worsen the condition. The Toxicity Level for Vitamin C Disadvantages of Vitamin C Mechanisms of Vitamin C (Ascorbic Acid) How Much Vitamin C is used for Constipation? What Are the Health Benefits of Sodium Ascorbate? What Are the Benefits of Vitamin C Powder? Symptoms of Vitamin C Toxicity Excessive Vitamin C in Early Pregnancy Can You Overdose on Vitamin C Tablets?
Vitamin C for Chronic Inflammation What Are The Effects of Eating Too Much Vitamin C? Why Is Time-Released Vitamin C Better? Can Vitamin Supplements Make You Feel Tired? Can Too Much Vitamin C Cause Headaches? Can Kids Overdose on Vitamin C? Does Vitamin C Make You Urinate? Foods That Help Healing After Knee Surgery Ways to Absorb Vitamin C Does Emergen-C Help With Acne? Shipping & Handling Included* Supports the Immune System No Artificial Colors, Flavors or Preservatives Gluten Free, Yeast Free and Soy Free The estimated delivery time will be approximately 3 - 5 business days from the time of order. Add to Wish List We are committed to offering the best value to our members, with a risk-free 100% satisfaction guarantee on both your membership and merchandise. If you have questions about your membership or products you've purchased at Costco, please visit the membership counter at your local Costco or Contact Customer Service.
View Costco's Return Policy Costco Concierge Services | Technical SupportFree technical support exclusive to Costco members for select electronics and consumer goods."I tried your cold/flu therapy, and it works 100%...like magic!I applaud your efforts." If you place your faith in "medical science" (or those who cloak themselves in that term when they insist that vitamin C has no benefit against the common cold) you may be surprised just how easy it is to halt a viral infection at the onset with high-dose vitamin C. We predict that you will find any of the following high-dose vitamin C cold (and flu) cures surprisingly effective. At first sign of cold or flu, begin taking at least 8 g (8000 mg) of vitamin C as ascorbic acid every twenty minutes for 3 to 4 hours until bowel tolerance. If symptoms recur, continue smaller dosages of 2-4 g every 4-6 hours for ten days to prevent recurrence. Begin protocol at the first sign of a runny nose, tickle in the throat, etc.
If not caught at the beginning, the infection can't be stopped, but you may lessen its severity and duration. Note: 8 grams equals sixteen - 500 mg pills, or eight - 1000 mg pills. The 'trick' here is achieving very high blood serum levels by mouth as described in the Hickey/Roberts book ASCORBATE: The Science of This recommended surefire dosage is 4 times Irwin Stones recommendation of 2 g every 20-30 minutes for the first two to threeIf you have trouble with 8 g, you might try lowering to Stone's dosage for the common cold. If you have a low bowel tolerance or stomach distress from oral vitamin C, you may experience great benefit from our second surefire Cold/Flu cure: the nasal spray approach. At the onset of a cold, mix 3.1 grams (3100 mg or about 1 teaspoon sodium ascorbate or ascorbic acid crystals) in 100 milliliters (ml) water or saline ( just enough to dissolve all the vitamin.) Use dropper and place 20 drops in each nostril,
Place solution in clean, sterile nasal spray device and apply several fine sprays of the ascorbate solution in each nostril. ascorbate soaked cotton balls: in our forum for this alternate nasal approach for chronic sinusitis. Repeat often, perhaps every 15 to 30 minutes for several hours, and then once per hour for 24 hours after all symptoms are gone Take Irwin Stone's 2 g dose orally. The idea behind this technique comes from page 19 of Linus Pauling's book HOW TO LIVE LONGER AND FEEL BETTER (1986 paperback). "Braenden (1973) reports that From this we surmise that, 3.1 g (3100 mg) times 1000 might mean that the spray or drops nasally is equivalent to 3 Million milligrams or "units" of Vitamin C orally! Feedback on Ascorbate Nasal Spray Interesting idea! A Foundation member found the ascorbic acid spray a little irritating to the nostril, and made his own colloidal silver nasal spray - with This general cure for infection was relayed to us after using the new
China-FREE True-Liposomal Vitamin C in the United Kingdom. Half a bottle (or 16 teaspoons) has suppressed infections within six If you have a low bowel tolerance or stomach distress from ordinary oral vitamin C, you may experience great benefit from our their surefire vitamin C Cold/Flu cure: the True-liposomal approach. Note: For all cures, avoid sugars/simple carbs, which may compete with vitamin C for cellular uptake during therapy. effectiveness of vitamin C in preventing and relieving the symptoms of It is amazing that researchers from a major drug company reported two trials in The Journal of International Medical Research that demonstrated that taking vitamin C plus zinc supplements helps relieve the common cold symptoms and reduce the illness duration. Silvia Maggini at Bayer Consumer Care Ltd in Basel, Switzerland and colleagues presented data from two preliminary, double-blind, randomized, placebo-controlled trials in which patients with the common
cold were given a combination of 1000 mg vitamin C and 10 mg zinc for In both trials, the vitamin C plus zinc supplement nonsignificantly reduced rhinorrhoea duration by 9 to 27 percent. In an analysis of combined data from the two trials of 94 subjects, the vitamin C plus zinc supplement reduced rhinorrhoea over a 5-day treatment more Robert Cathcart's Treatment of the flu with massive doses of vitamin C... More Vitamin C for C Supplementation and Respiratory Infections: a Systematic Review... (Alternative viewpoint with low doses) Vitamin C for preventing and treating the common cold... "clueless" about Vitamin C... World's Finest Vitamin C China-FREE Liposomal Vitamin C Cameron's Chewable Vitamin C The Nature of Vitamin C, AKA the Myth of the Vitamin C Complex. The Foundation's Vitamin C RDA... Why the Foundation Does Not Recommend Ester-C®... Consider making a contribution to the nonprofit Vitamin C Foundation