High Dose Vitamin C
Episodes covering high dose vitamin c — protocols, research, and expert discussions.
Vitamin C supplementation at doses above RDA for immune support, cold duration reduction, and antioxidant benefits
Evidence-Based Take:
High-dose vitamin C has modest but real benefits for cold duration and severity. The Cochrane review shows ~8% reduction in cold duration for regular supplementation. However, the megadose claims popularized by Linus Pauling (preventing cancer, heart disease) remain largely unproven.
What the Evidence Actually Shows:
- Regular supplementation: Modest cold duration reduction (~8%)
- Therapeutic doses at cold onset: May further reduce duration
- IV vitamin C for cancer: Intriguing but unproven
- Megadose benefits: Mostly unsupported
Honest Assessment:
Vitamin C is safe and affordable. The benefits are real but modest - don't expect miracles. Most healthy people eating adequate fruits/vegetables likely don't need supplementation. Those under physical stress (athletes, illness) may benefit more.
Science & Mechanisms
Mechanism:
Vitamin C (ascorbic acid) is a water-soluble antioxidant essential for: - Collagen synthesis - Immune cell function (neutrophils, lymphocytes) - Antioxidant defense (regenerates vitamin E) - Neurotransmitter synthesis - Iron absorption
Pharmacokinetics:
- Oral absorption saturates around 200-400 mg
- Higher oral doses have diminishing absorption
- Liposomal forms may improve bioavailability
- IV bypasses absorption limits entirely
- Excess is excreted in urine (water-soluble)
Key Research:
Cochrane Review (Hemilä 2013):
- 29 trials, 11,306 participants
- Regular supplementation: 8% reduction in cold duration (adults)
- No significant cold prevention in general population
- Higher benefit in those under physical stress (marathoners: 52% reduction)
Critically Ill Patients:
- IV vitamin C shows promise in sepsis/ICU settings
- CITRIS-ALI trial: Mixed results, some benefit signals
- Still experimental, not standard of care
Cancer (Controversial):
- IV vitamin C explored as adjunct therapy
- Proposed pro-oxidant effects at high concentrations
- Not proven to treat cancer
- Some quality-of-life improvements in studies
The Linus Pauling Legacy:
Nobel laureate Pauling claimed megadoses (10-18g/day) prevented colds and cancer. While he brought attention to vitamin C, most of his specific claims haven't been validated by rigorous research.
Episodes
A comprehensive episode on vitamin C science. Covers oral bioavailability vs intravenous, immune cell function, effects on common cold and viral infections, lung function benefi...
Chris Masterjohn examines whether whole food-derived vitamin C offers advantages over synthetic ascorbic acid. He reviews the biochemistry, absorption studies, and practical con...
Chris Masterjohn explores the relationship between glutathione, vitamin C, and cancer treatment through IV drips. He examines the biochemical mechanisms by which high-dose vitam...
Andrew Huberman explains the biology of colds and influenza -- how these viruses are transmitted, how the immune system responds, and evidence-based protocols for prevention and...
Rhonda Patrick answers questions about COVID-19, immune function, and strategies for supporting health during the pandemic. Covers evidence-based approaches to immune support an...
Douglas Wyatt, founder of Sovereign Laboratories and one of the earliest advocates for bovine colostrum supplementation, joins the Root of the Cause Radio podcast to discuss the...
Dr. Greg Dennis explores the therapeutic potential of high-dose vitamin C beyond the common cold, covering the differences between oral and intravenous forms of ascorbic acid. H...
Chris Wark interviews Dr. Thomas Levy, a cardiologist and leading authority on vitamin C therapy, about the use of high-dose vitamin C for treating viral infections, chronic dis...
Dr. Sergio Zanotti interviews Dr. Emily Brandt, an intensivist at the University of Pittsburgh Medical Center, about the clinical evidence for high-dose vitamin C in sepsis trea...
This episode of the Australian health podcast What's That Rash explores whether vitamin C supplementation can prevent colds or treat cancer. The hosts trace the history from scu...
Abel James interviews Dr. Andrew Saul, known as the Mega Vitamin Man, about his 40 years of experience with high-dose vitamin therapy. Dr. Saul presents a passionate case for us...
Dee McCaffrey, an organic chemist and nutritionist, examines the history and current evidence for high-dose vitamin C as a cancer treatment. She traces the research from Linus P...
The host interviews Dr. Andrew Saul, the Mega Vitamin Man, in what he calls one of his most important episodes ever. Dr. Saul makes the case that vitamin C therapy is all about ...