Vitamin Injections· IV / Injection

Vitamin C IV

  • IV
  • High-dose

High-dose intravenous ascorbic acid (typically 5–25g per session) — orders of magnitude beyond what oral supplementation can deliver. Used for antioxidant support, post-illness recovery, and adjunct care.

Typically used for:

High-dose antioxidant support for recovery, immune function, and adjunct care.

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Benefits

What Vitamin C IV can do for you.

  • Antioxidant load

    IV achieves plasma concentrations 10–100× oral — pharmacologically distinct from supplements.

  • Immune + recovery support

    Often used as adjunct in post-illness recovery, high-stress periods, or post-procedure healing.

  • Adjunct care option

    Strongest evidence is as part of a broader treatment plan — never a standalone substitute for foundational health.

Oral vitamin C absorption is capped by saturable intestinal transporters: serum levels plateau around 200 μmol/L regardless of dose, with the rest excreted.1 Intravenous administration bypasses this ceiling and can produce plasma concentrations 10–100× higher than oral, briefly reaching pharmacological rather than nutritional levels.1 That pharmacokinetic difference is what makes high-dose IV vitamin C a distinct treatment, not simply "more vitamins."

What the evidence supports

Strongest evidence is in adjunct settings rather than wellness ones: post-sepsis recovery (where the CITRIS-ALI and VICTAS trials produced mixed but discussed results), certain oncology adjuncts under specialist supervision, and acute respiratory infection support.23 In each case, IV vitamin C is part of a broader treatment plan — not a standalone therapy.

What the evidence does not yet support

  • General-wellness use in healthy adults: no robust outcomes data.
  • Cancer treatment as a standalone — high-dose vitamin C is an adjunct studied alongside conventional treatment, never a replacement for it.
  • Common-cold prevention: oral mega-dose data is weak; IV data essentially non-existent for prevention.

Safety + screening

In screened patients, the safety profile is good. Three pre-treatment screens are non-negotiable: G6PD deficiency (high-dose vitamin C can precipitate hemolysis), renal function (oxalate burden), and iron-overload disorders.4 Hereditary hemochromatosis is a particular concern because vitamin C increases iron absorption. Pre-infusion CBC, BMP, and G6PD status are standard.

Use is honest at GentsMed: short-term antioxidant or recovery support for screened, healthy adults — not a panacea, not a substitute for foundational nutrition, sleep, and training.

How it works

From consult to follow-up.

  1. Initial consultation

    A board-certified physician reviews your symptoms, history, and goals. At many participating clinics the first visit is complimentary.

  2. Baseline labs

    Bloodwork tailored to the protocol. Results come back in days, not weeks. We don't prescribe before we have your numbers.

  3. Personalized protocol

    Your physician calibrates your dose based on your labs and your goals — not a template. Adjustments happen as your data evolves.

  4. Ongoing follow-up

    Recheck visits at six and twelve weeks, then quarterly. Real follow-up, structured into the plan.

Duration
30–60 minutes per IV session
Results timeline
Subjective effects (energy, recovery) typically reported within 24–48 hours

Designed around your schedule

  • Consults are short

    Initial visits are typically 45–60 minutes. Many participating clinics waive the fee for new patients.

  • Telehealth follow-ups

    Where state regulations allow, follow-up visits are conducted via telehealth — no extra drive time.

  • Medication shipped

    Prescriptions ship directly from a 503B-licensed pharmacy to your door. No standing in line.

  • Quarterly check-ins

    Real follow-up at six and twelve weeks, then quarterly. Not constant visits, not zero visits.

Network providers

34 certified physicians offer Vitamin C IV.

Every provider in the network is board-certified and credentialed.

  • Brandon Crandall, NP

    Men's Health / Erectile Dysfunction · Syracuse, NY

    Brandon Crandall, NP
    Profile

  • Candace Remington, NP

    Men's Health / Erectile Dysfunction · Tampa, FL

    Candace Remington, NP
    Profile

  • Deb Gross, NP

    Men's Health / Erectile Dysfunction · Centralia, WA

    Deb Gross, NP
    Profile

  • Dr. Adriana Rosales, MD

    Men's Health / Erectile Dysfunction · Seattle, WA

    Dr. Adriana Rosales, MD
    Profile

  • Dr. Aleix Bazzi, MD

    Men's Health / Erectile Dysfunction · Beverly Hills, CA

    Dr. Aleix Bazzi, MD
    Profile

  • Dr. Amit Grover, MD

    Men's Health / Erectile Dysfunction · Seattle, WA

    Dr. Amit Grover, MD
    Profile

  • Dr. Ashish Bhavsar, MD

    Men's Health / Erectile Dysfunction · Orange County, CA

    Dr. Ashish Bhavsar, MD
    Profile

  • Dr. Bona Lee, MD

    Men's Health / Erectile Dysfunction · Dallas, TX

    Dr. Bona Lee, MD
    Profile

  • Dr. Brad Sellers, DO

    Men's Health / Erectile Dysfunction · Dallas, TX

    Dr. Brad Sellers, DO
    Profile
See all 34 providers

Where to get it

Available in 23 cities.

Pick your metro to see the local clinics, providers, and booking options.

See all 23 cities

What sets us apart

Real physicians. Real labs. Real follow-up.

GentsMed is a network of board-certified physicians held to a single clinical standard — built to replace the cash-pay men's-health mills with actual medicine.

Board-certified physicians.
Every provider is licensed, NPI-verified, and credentialed by the GentsMed or Urosculpt certification board — no nurse-only prescribers, no offshore consults.
A single clinical standard.
Whether you see a urologist in Tampa or a dermatologist in New York, the protocol meets the same criteria.
Labs-driven, not guess-driven.
No prescriptions without baseline labs. No cookie-cutter dosing. Quarterly bloodwork is built into the plan.
Real follow-up.
Not a 'set it and forget it' Rx mill. Every protocol includes structured follow-up at 6 and 12 weeks, then quarterly.
Transparent pricing.
Starting-from prices where we have them, honest "consult for pricing" where we don't. No surprise bills.
Your records stay with your physician.
GentsMed is the network. We do not store your PHI. Your clinical data lives with your treating physician, where it belongs.

Frequently asked questions

References

  1. Padayatty SJ, Sun H, Wang Y, et al. Vitamin C pharmacokinetics: implications for oral and intravenous use. Ann Intern Med. 2004;140(7):533–537.(PubMed)
  2. Fowler AA, Truwit JD, Hite RD, et al. Effect of vitamin C infusion on organ failure and biomarkers of inflammation and vascular injury in patients with sepsis and severe acute respiratory failure: the CITRIS-ALI randomized clinical trial. JAMA. 2019;322(13):1261–1270.(JAMA)
  3. Carr AC, Maggini S. Vitamin C and immune function. Nutrients. 2017;9(11):1211.(PubMed)
  4. Padayatty SJ, Sun AY, Chen Q, et al. Vitamin C: intravenous use by complementary and alternative medicine practitioners and adverse effects. PLoS One. 2010;5(7):e11414.(PLoS One)

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