™Treatment Guide
High-Dose Vitamin C IV Therapy
High-dose vitamin C IV delivers 10–75 grams of ascorbic acid directly into your bloodstream — achieving plasma levels 100–500× higher than any oral supplement. At these concentrations, it becomes a powerful antiviral, immune stimulant, and cellular protector. Fortafid™ brings it to you, same day.
Book Vitamin C IV — Same DayWhy can't you just take oral vitamin C?
Oral vitamin C is absorbed through intestinal transporters that become saturated at around 200–500 mg. Beyond that, the excess is excreted in urine — which is why "megadosing" oral vitamin C mostly just causes digestive upset. IV delivery bypasses the gut entirely, achieving plasma concentrations that are pharmacologically active.
100–500×
Higher plasma levels vs. oral
~100%
Bioavailability via IV
10–75g
Therapeutic dose range
Vitamin C IV dosing guide — which dose is right for you?
| Dose | Best For | Infusion Time |
|---|---|---|
| 5–15g | General wellness, immune boost, energy | 30–45 min |
| 25g | Illness recovery, antiviral support, fatigue | 60–90 min |
| 50g | Integrative cancer support, chronic illness | 2–2.5 hrs |
| 75g+ | Advanced integrative oncology protocols | 3+ hrs |
Frequently asked questions about vitamin C IV therapy
What is high-dose vitamin C IV therapy?
High-dose vitamin C IV delivers 10–75 grams of ascorbic acid intravenously — achieving plasma concentrations 100–500× higher than oral supplementation. At these levels, vitamin C acts as a pro-oxidant in cancer cells while protecting healthy cells.
What are the benefits of high-dose vitamin C IV?
Benefits include powerful immune stimulation, antiviral activity, collagen synthesis support, anti-fatigue effects, antioxidant protection, and adjunctive support in cancer care protocols.
How is IV vitamin C different from oral vitamin C?
Oral vitamin C is limited by intestinal absorption — you can only absorb about 200–500 mg at a time before the excess is excreted. IV delivery bypasses this entirely, achieving plasma levels that are therapeutically active against pathogens and damaged cells.
How long does a high-dose vitamin C IV take?
A standard 25g infusion takes 60–90 minutes. Higher doses (50–75g) may take 2–3 hours. The infusion rate is carefully controlled to avoid side effects.
How much does vitamin C IV therapy cost?
At Fortafid™, vitamin C IV therapy starts at $129 for a 15g dose and scales with dose. Mobile delivery to your location is included.
Is high-dose vitamin C IV safe?
Yes, for most people. A G6PD enzyme test is recommended before high doses (>25g) as G6PD-deficient individuals can experience hemolysis. Our practitioners screen for this before high-dose infusions.
Can vitamin C IV help with cancer treatment?
High-dose IV vitamin C is used as an integrative oncology adjunct. At pharmacological doses, it generates hydrogen peroxide selectively in cancer cells. It is not a standalone cancer treatment but is used alongside conventional therapy to reduce side effects and improve quality of life.
Supercharge your immune system today
Book a high-dose vitamin C IV with Fortafid™ — mobile delivery, same day.