IVList
Find IV Therapy

High-Dose Vitamin C IV IV Therapy

Pharmaceutical-grade antioxidant therapy at 50–100g doses

Medically reviewed by Jonathan Belmore, MD|Updated 2026-06-01

$200–$600

Per session

90 min

Session duration

7 Benefits

Documented effects

4

Active ingredients

High-Dose Vitamin C IV IV Therapy

Key Takeaways

  • High-dose IV vitamin C (HDIVC) uses 25,000–100,000 mg — far beyond wellness doses — to reach blood levels that behave like a drug, not a vitamin.
  • At these levels it can act as a pro-oxidant, generating hydrogen peroxide that selectively stresses cancer cells in lab studies; it is used as an adjunct in integrative oncology.
  • Sessions cost roughly $200–$600 and run 60–90+ minutes, and require G6PD screening and kidney monitoring.
  • It is a serious medical protocol — promising in early research but not a proven cancer treatment — and must be supervised, especially alongside conventional therapy.

What is High-Dose Vitamin C IV IV Therapy?

High-dose IV vitamin C (HDIVC) delivers 25,000–100,000mg of ascorbic acid directly to the bloodstream — doses that are impossible to achieve orally and produce fundamentally different biological effects. At concentrations above 1,000mg/dL plasma, vitamin C acts as a pro-oxidant in cancer cells while protecting normal cells, generating hydrogen peroxide selectively in tumor tissue. It is used as an adjunct in integrative oncology, for immune support in viral illness, and as a powerful anti-inflammatory and antioxidant protocol. Requires G6PD screening before first infusion.

How High-Dose Vitamin C IV IV Therapy Works

At ordinary doses, vitamin C is an antioxidant. At the very high blood concentrations only achievable by IV (something oral dosing physically cannot reach), it flips behavior: in the presence of certain metals it generates hydrogen peroxide. Normal cells detoxify this readily, but many cancer cells, with weaker antioxidant defenses, are more vulnerable — the basis for its study as a pro-oxidant, selective anti-cancer agent.

This pharmacologic effect is entirely dose-dependent, which is why HDIVC is a distinct protocol from a wellness vitamin C drip. Because such high doses raise oxalate (kidney-stone risk) and can cause dangerous red-cell breakdown in G6PD deficiency, mandatory pre-screening and kidney monitoring are part of any legitimate program.

What's in a High-Dose Vitamin C IV Drip?

IngredientWhat it doesTypical dose
Ascorbic acid (pharmacologic dose)At very high blood levels acts as a pro-oxidant studied for selective effects on cancer cells.25,000–100,000 mg
Sterile water for injectionDilutes the large ascorbic acid dose for safe infusion.Varies
Sodium bicarbonateBuffers pH of the concentrated solution.Varies
Magnesium chloride (optional)Sometimes added to support tolerance.1–2 g

What to Expect During a High-Dose Vitamin C IV Session

Before the first infusion, a clinician orders a G6PD test and assesses kidney function and any chemotherapy you are receiving. The infusion itself is long — often 60–90 minutes or more — and given slowly with monitoring.

Most people tolerate it, though the volume and duration require time and hydration. It is typically delivered in a series within an integrative or oncology setting, coordinated with — never secretly alongside — any conventional cancer treatment, since interactions are possible.

Benefits of High-Dose Vitamin C IV

Potent antioxidant activity at high plasma levels
Selective pro-oxidant in cancer cells
Immune system activation
Anti-inflammatory effects
Collagen synthesis support
Antiviral activity at high doses
Post-chemotherapy recovery support

Who is High-Dose Vitamin C IV Best For?

  • Integrative cancer care support
  • Chronic viral infections (EBV, CMV)
  • Severe immune dysfunction
  • Mold illness and environmental toxicity
  • Anti-aging and longevity protocols
  • Post-chemotherapy recovery
  • Lyme disease adjunct therapy

High-Dose Vitamin C IV IV Therapy Cost

Starts from

$200

Typical high

$600

Session

90 min

What affects High-Dose Vitamin C IV pricing?

Clinic vs. mobile (at-home) serviceMobile visits add a $25–$50 travel fee
Add-ons (glutathione, anti-nausea, extra B12)+$25–$75 each
Dose / volume of the infusionHigher doses sit at the top of the range
Membership or multi-session packagesOften 10–25% lower per session
Local market & cost of livingMajor metros trend higher
See the full IV therapy cost guide

Evidence & Research

High-dose IV vitamin C is the most actively researched protocol on this list for a serious indication. The NCI’s own PDQ summary documents that IV (unlike oral) vitamin C reaches pharmacologic, pro-oxidant concentrations, and early-phase trials suggest it is generally safe and may improve quality of life and reduce chemotherapy side effects.

However, it has not been proven to treat or cure cancer in rigorous, large randomized trials. Most human evidence is early-phase, focused on safety and quality of life rather than survival. It is investigational, not standard care.

Bottom line: HDIVC is a legitimate area of cancer research with real pharmacology behind it, and it is used as a supervised adjunct in integrative oncology — but it is not a substitute for evidence-based cancer treatment, and anyone considering it should coordinate closely with their oncologist.

High-Dose Vitamin C IV vs. Other IV Drips

High-Dose Vitamin C IV vs. Vitamin C

Vitamin C guide

Wellness-dose vitamin C (a few grams) supports immunity and skin. High-dose vitamin C (25–100 g) is a separate pharmacologic protocol with different effects, screening, and oversight.

High-Dose Vitamin C IV vs. Immunity Boost

Immunity Boost guide

The immunity drip is for everyday cold-and-flu support. HDIVC is a high-intensity protocol used in integrative oncology and chronic illness — not interchangeable.

Important Considerations

Always disclose the following conditions to your provider before receiving High-Dose Vitamin C IV therapy:

  • G6PD deficiency (absolute contraindication — requires screening)
  • Kidney disease or kidney stones (oxalate risk)
  • Hemochromatosis
  • Certain chemotherapy drugs (interaction risk — consult oncologist)
  • Pregnancy (high doses)

High-Dose Vitamin C IV IV Therapy — FAQs

High-dose IV vitamin C (HDIVC) delivers 25,000–100,000mg of ascorbic acid directly to the bloodstream — doses that are impossible to achieve orally and produce fundamentally different biological effects. At concentrations above 1,000mg/dL plasma, vitamin C acts as a pro-oxidant in cancer cells while protecting normal cells, generating hydrogen peroxide selectively in tumor tissue. It is used as an adjunct in integrative oncology, for immune support in viral illness, and as a powerful anti-inflammatory and antioxidant protocol. Requires G6PD screening before first infusion.
High-Dose Vitamin C IV IV therapy typically costs $200–$600 per session, depending on your location and provider. Some clinics offer package pricing for multiple sessions.
A High-Dose Vitamin C IV IV session takes approximately 90 minutes. Add 10–15 minutes for setup and intake at your first visit.
High-Dose Vitamin C IV IV therapy is best for: Integrative cancer care support, Chronic viral infections (EBV, CMV), Severe immune dysfunction, Mold illness and environmental toxicity, Anti-aging and longevity protocols, Post-chemotherapy recovery, Lyme disease adjunct therapy. Consult with the clinical staff if you have existing health conditions.
The following conditions may contraindicate High-Dose Vitamin C IV: G6PD deficiency (absolute contraindication — requires screening), Kidney disease or kidney stones (oxalate risk), Hemochromatosis, Certain chemotherapy drugs (interaction risk — consult oncologist), Pregnancy (high doses). Always complete the health intake form and disclose all medications and conditions before your session.
No. It is investigational. IV vitamin C reaches drug-like levels with real anti-cancer activity in the lab, and early trials suggest safety and possible quality-of-life benefits, but it is not proven to treat or cure cancer and is not a substitute for standard oncology care.
Dose. Wellness vitamin C is a few grams; HDIVC is 25,000–100,000 mg, which produces a completely different, pharmacologic pro-oxidant effect and requires more screening and monitoring.
At these very high doses, vitamin C can cause severe red-blood-cell breakdown (hemolysis) in people with G6PD deficiency. The test is required before the first infusion — no exceptions.
Only with your oncologist’s knowledge. Some chemotherapy drugs may interact with high-dose antioxidants, so it must be coordinated, never hidden from your cancer team.
Yes. High doses raise oxalate, which can promote kidney stones, so it is avoided or closely monitored in people with kidney disease or a stone history.

Sources & References

  1. High-Dose Vitamin C (PDQ®) – Health Professional Version — National Cancer Institute (NCI)
  2. Padayatty SJ, et al. Vitamin C pharmacokinetics: implications for oral and intravenous use. (2004) — Annals of Internal Medicine
  3. Carr AC, Cook J. Intravenous Vitamin C for Cancer Therapy – Identifying the Current Gaps. (2018) — Frontiers in Physiology

Medical Disclaimer

This content is for informational purposes only and does not constitute medical advice. IV therapy should only be administered by licensed medical professionals. Always consult a qualified healthcare provider before starting any IV therapy treatment.