High-Dose Vitamin C IV Therapy in Bellevue, Washington

Intravenous (IV) vitamin C at high doses offers therapeutic potential far beyond what oral supplementation can achieve. At Apex Health & Wellness in Bellevue, we offer clinically guided, high-dose vitamin C IV therapy to support antioxidant status, immune function, tissue recovery, and — in select cases — as part of an adjunctive approach to oncology care.

By delivering vitamin C directly into the bloodstream at higher concentrations than can be achieved orally, we can influence redox biology, modulate inflammation, and promote cellular repair mechanisms in a variety of clinical contexts.

What Makes High-Dose Vitamin C Unique?

At typical dietary levels, vitamin C acts primarily as an antioxidant. But at pharmacologic IV doses (often exceeding 15–25 grams per session), vitamin C may exert pro-oxidant effects that generate hydrogen peroxide in tissues — a mechanism that has shown promise in weakening certain cancer cell lines and enhancing redox signaling.

In addition, high-dose vitamin C IVs bypass absorption limits of the gut and can:

  • Replenish depleted antioxidant reserves

  • Support post-viral fatigue and immune dysregulation

  • Assist in detoxification and inflammation modulation

  • Promote tissue repair following injury or surgery

  • Enhance well-being in patients undergoing conventional cancer treatment

A Note on Safety: G6PD Screening Required

Before receiving high-dose vitamin C therapy, all patients must complete G6PD (glucose-6-phosphate dehydrogenase) screening. This is a simple blood test used to assess red blood cell stability. Without sufficient G6PD activity, high-dose vitamin C may increase risk of hemolysis — so proper screening ensures the treatment is both safe and effective.

Supporting Oncology Patients — Adjunctively

We do not diagnose or treat cancer. However, many patients undergoing conventional cancer care seek ways to support their resilience, reduce side effects, and improve energy during treatment. In those cases, high-dose vitamin C may be used as an adjunctive option — always under medical supervision and ideally in collaboration with your oncology team.

When indicated, we may also utilize high-dose IV melatonin — a therapy shown in research to support circadian signaling, antioxidant function, and immune modulation during chemotherapy or radiation. These therapies are never substitutes for cancer treatment but can be strategically integrated alongside your existing plan.

Our Functional Approach

We tailor high-dose vitamin C infusions to your individual goals and clinical context, which may include:

  • Immune system challenges

  • Recovery from chronic or acute illness

  • Mitochondrial or redox imbalance

  • Nutrient repletion for fatigue or inflammation

  • Adjunctive support during oncology treatment

How It Works

Step 1: Consultation
We begin with a 60-minute visit to review your case, medical history, and treatment goals.

Step 2: Lab Work (if needed)
G6PD testing is mandatory for high-dose vitamin C therapy. Other labs may be recommended depending on your goals.

Step 3: Infusion Plan
If appropriate, we’ll customize your IV formula and schedule to support your desired outcomes. Oncology patients must already be under the care of a qualified oncology provider.

Book a High-Dose Vitamin C Consultation

Interested in vitamin C IV therapy to support recovery, immune health, or adjunctive cancer care?
Start with a consultation to determine if high-dose vitamin C is right for you.

Serving Bellevue, Seattle, and All of Washington State

Apex Health & Wellness provides integrative IV therapy to patients across Bellevue, Seattle, Redmond, Kirkland, and the greater King County region — with telehealth consultations and in-person IV services.