Is this for you?
- Acute viral or bacterial illness (alongside, not replacing, primary care)
- Post-infection recovery, the long tail of fatigue and immune depletion
- Immune amplification during high-exposure seasons (healthcare workers, school parents, frequent travelers)
- Complementary support during oncology care, coordinated with your oncologist, not as a curative therapy
- Connective-tissue and post-surgical repair phases
- Heavy training blocks where oxidative load is elevated
Why dose matters with Vitamin C
Oral Vitamin C is useful for everyday immune maintenance, antioxidant support, and connective-tissue health. But there's a ceiling. Gut absorption of ascorbate caps out around 400-500 mg per dose. Take more, and your gut simply pushes the excess through. Plasma levels stay roughly the same.
Intravenous delivery bypasses that ceiling entirely. A 10g, 25g, or 50g IV infusion produces plasma concentrations dozens of times higher than anything achievable orally, and the body responds to those concentrations in ways it doesn't respond to a vitamin tablet.
That's the entire point of High-Dose Vitamin C. It's not the same molecule used at a different dose. It's a clinically distinct intervention that requires nurse-administered IV access, intake screening, and (above 25g) a G6PD test for safety.
The mechanism, plainly stated.
Pro-oxidant at high doses
At ordinary doses Vitamin C is an antioxidant: it donates electrons to neutralize free radicals. At gram-scale plasma levels, the chemistry flips: ascorbate generates hydrogen peroxide in tissue. Healthy cells handle it with their catalase enzymes; compromised cells (those with metabolic stress, low antioxidant capacity) experience that peroxide as selective oxidative pressure. This is the mechanism research groups have studied as complementary support in oncology settings, always alongside, never replacing, primary care.
Immune amplification
Vitamin C is concentrated in white blood cells at 50-100× plasma levels under healthy conditions. During acute illness those levels crash. High-dose IV ascorbate restores intracellular Vit C in immune cells rapidly and supports natural killer cell activity, leukocyte chemotaxis (the way immune cells move toward infection), and antibody-mediated response. Several plans in our wellness lineup use HDVC sessions during high-exposure seasons for exactly this reason.
Collagen + connective tissue cofactor
Ascorbate is an obligate cofactor for the enzymes that hydroxylate proline and lysine, the post-translational step that makes collagen actually structural. Above-baseline plasma Vit C supports the repair side of inflammation: wound healing, post-surgical recovery, and the daily turnover of skin, vasculature, and connective tissue. Pair this with the Lysine + Vit C combination Megan and Lauren use across multiple plans.
Antioxidant cycle support
Vitamin C recycles other antioxidants. Vitamin E gets oxidized as it neutralizes lipid free radicals, and ascorbate regenerates it. Glutathione recycling is also Vit C-dependent. A High-Dose Vitamin C session resets your entire antioxidant ecosystem, not just one molecule. This is why HDVC is often paired with Glutathione or sequenced into a multi-session immune protocol.
Safety and intake requirements
We are explicit about contraindications. Tell your nurse during intake. These are the items that matter.
- G6PD enzyme test required for any dose above 25g. A small percentage of the population is G6PD-deficient, and high-dose ascorbate can trigger hemolysis in that group. This is a hard intake gate.
- Hemochromatosis is a contraindication: ascorbate increases iron absorption, which is the opposite of what hemochromatosis management needs.
- Active kidney stones (oxalate type) warrant a conversation before scheduling. Vit C metabolizes to oxalate; for clients with prior oxalate stones, dose and frequency are adjusted.
- Always tell your nurse about chemotherapy or radiation therapy. High-Dose Vitamin C is appropriate as complementary support in some protocols, but timing relative to active treatment matters and is coordinated with your oncologist.
- Doses above 25g require MD approval in addition to the G6PD test.
- Mild side effects can include vein discomfort during infusion (managed by infusion rate), thirst, and a brief warming sensation. These are normal and resolve quickly.
Where high-dose vitamin c fits in your plan.
Most clients run this as part of a sequenced plan or alongside complementary protocols. Here are the natural pairings.
What clients ask us.
How is High-Dose Vitamin C different from the Vitamin C in a regular wellness drip?
A regular wellness drip includes 500 mg of Vitamin C as part of the foundational nutrient mix. High-Dose Vitamin C is a separate, dedicated infusion at 10g, 25g, or 50g, twenty to one hundred times higher. At those concentrations, ascorbate works through a different mechanism (pro-oxidant in stressed tissue, intense immune cell saturation) that doesn't happen at ordinary doses.
Why is G6PD testing required above 25g?
G6PD (glucose-6-phosphate dehydrogenase) is an enzyme that protects red blood cells from oxidative stress. Roughly 4 to 5% of people globally are G6PD-deficient. For people with the deficiency, high-dose ascorbate can trigger hemolysis (breakdown of red blood cells). The test is a single blood draw and prevents any client from receiving a dose their physiology can't safely process. It's a one-time test; once you've been cleared, you don't repeat it.
Can I do HDVC during chemotherapy?
Some oncologists incorporate High-Dose Vitamin C as complementary support during chemotherapy, and some do not. The decision belongs to your oncology team, not us. If your oncologist has cleared HDVC and recommends a timing pattern relative to your treatment cycle, we'll administer it under that direction. We do not claim HDVC treats cancer, and we never replace primary oncology care.
How long does a session take?
A 10g HDVC infusion runs roughly 60 to 90 minutes. 25g runs 90 to 120 minutes. 50g sessions run 2 to 3 hours. Infusion rate matters, and going too fast causes vein irritation, so the protocol is intentionally slow. You can read, work, or rest during the session.
How often should I do HDVC?
For seasonal immune amplification, most clients do 1 to 2 sessions per month during their high-exposure period. For acute illness, sessions can be closer (every 3 to 5 days) for a short window. The Immune Support Plan includes two HDVC sessions built into an 8-session arc, and your nurse will recommend cadence based on what you're using it for.
Ready to start? Talk to a nurse first.
Every protocol starts with a conversation. Free 10-minute consult. We will walk through whether this fits your goals, your safety profile, and your timeline.
